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From: Robert K. <rl...@al...> - 2017-12-27 20:02:37
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I'm finally biting the bullet and working on color laser printer support. It actually doesn't look very hard. I'm off through January 1, so I have time to play around with this in addition to some other projects (not Gutenprint) that I'm doing over the break. I've done the changes to pcl-unprint to support color laser output, at least in simple cases (which should be all we need). We don't really need to do things like use different compression algorithms on different rows; we can stick with using simple RLE compression at least for now. -- Robert Krawitz <rl...@al...> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton |
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From: Robert K. <rl...@al...> - 2017-12-28 17:53:03
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On Wed, 27 Dec 2017 15:02:24 -0500 (EST), Robert Krawitz wrote: > I'm finally biting the bullet and working on color laser printer > support. It actually doesn't look very hard. I'm off through January > 1, so I have time to play around with this in addition to some other > projects (not Gutenprint) that I'm doing over the break. > > I've done the changes to pcl-unprint to support color laser output, at > least in simple cases (which should be all we need). We don't really > need to do things like use different compression algorithms on > different rows; we can stick with using simple RLE compression at > least for now. OK, I've bench tested it using the GIMP plugin and run-testpattern-2, using pcl-unprint, but I don't actually have a color laser printer to try it out on. Could someone with a color laser printer pull the latest bits and try it (using the appropriate generic color laser printer driver)? There are some tweaking/improvements I can do using the features provided by PCL, but I'd at least like to establish that the basics are working. -- Robert Krawitz <rl...@al...> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton |
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From: Solomon P. <pi...@sh...> - 2017-12-28 18:41:53
Attachments:
signature.asc
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On Thu, Dec 28, 2017 at 12:52:49PM -0500, Robert Krawitz wrote: > OK, I've bench tested it using the GIMP plugin and run-testpattern-2, > using pcl-unprint, but I don't actually have a color laser printer to > try it out on. Could someone with a color laser printer pull the > latest bits and try it (using the appropriate generic color laser > printer driver)? I have access to two different models of HP color laser printers at the office (MFP M680 and CP5225DN). Both support both PCL and PostScript. I will do a quick build and test-print (via gimp plugin) and see what happens.. - Solomon -- Solomon Peachy pizza at shaftnet dot org Coconut Creek, FL ^^ (email/xmpp) ^^ Quidquid latine dictum sit, altum videtur. |
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From: Robert K. <rl...@al...> - 2017-12-29 21:55:19
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On Fri, 29 Dec 2017 16:34:27 -0500, Solomon Peachy wrote: > On Fri, Dec 29, 2017 at 10:26:48AM -0500, Solomon Peachy wrote: >> (I have a monochrome Brother HL-5340 at home, nominally supporting PS >> level 3 and PCL6. I'll try sending it a gutenprint-generated PCL5e >> raster to see what happens. Might as well find out how well the >> Gutenprint PS driver works too!) > > It looks like Gutenprint's PCL5 greyscale output works on this model. > Quality's not so hot though; standard cupsfilter output (JPG->PS) looks > a lot better. Try some of the other dither algorithms (in particular, VeryFast and Fast). What about color output? -- Robert Krawitz <rl...@al...> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton |
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From: Solomon P. <pi...@sh...> - 2017-12-30 13:44:33
Attachments:
signature.asc
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On Fri, Dec 29, 2017 at 04:55:04PM -0500, Robert Krawitz wrote: > Try some of the other dither algorithms (in particular, VeryFast and > Fast). Two things I've noticed so far. When using "Automatic" and "Standard" resolution and quality settings, the dithering shows visible artifacts. Switching dithering modes helps a lot with these settings. But at higher quality modes the dithering looks much better -- but we're putting down _way_ too much toner. When using 600dpi and high quality, dialing the density to 0.8 and contrast to 0.4 looks a lot better but still nowhere near the quality of the built-in Postscript RIP, with a visible "window screen" sort of artifacting visible no matter what dithering mode I select. Oh, I'm using a very high resolution (35Mpix) source image, so the image is being scaled down by the respective RIPs, but if I downscale it to ~1.5Mpix before printing, the output still shows the artifacts. If I print with PS I also get to use "HQ 1200 dpi" and "high quality image" settings, which further improves the PS output. I can scan this stuff in if you're interested. (I'm using 'lpr -o whatever image.jpg' on the cmdline for all of this stuff btw.) > What about color output? It's only a B&W model, alas. - Solomon -- Solomon Peachy pizza at shaftnet dot org Coconut Creek, FL ^^ (email/xmpp) ^^ Quidquid latine dictum sit, altum videtur. |
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From: Robert K. <rl...@al...> - 2017-12-30 03:05:51
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On Fri, 29 Dec 2017 10:26:48 -0500, Solomon Peachy wrote: > On Fri, Dec 29, 2017 at 08:56:05AM -0500, Solomon Peachy wrote: >> There's also a pile of Brother Laser printers that could probably be >> added, but figuring out which ones support PCL5c is going to be a bit of >> a PITA. The old rule of thumb was that the 1xxx and 2xxx series were >> GDI, whereas the rest usually supported both PCL (5c and 6) as well as >> Postscript, but it looks like more recent models have all dropped PCL5c, >> and some of the 2xxx series support PCL6 too. > > It's worse. 1xxx were always GDI, 2xxx were usually GDI but someimes > GDI+PCL, 3xxx tended to be PCL, 4xxx and up were PCL+PS. Sometimes > PCL5c or PCL5e, Sometimes PCL6, sometimes both. PS level 2 or 3 > depending on the age -- and Brother's PS level 3 interpreter has a > long-standing bug involving implicit EOF markers with compressed > streams. > > And then there's the question of what exactly "PCL6" means in this > context, given that could mean "PCL6 Standard" which is essentially just > a renamed PCL5e/PCL5c. Even "PCL6 Enchanced" (aka PCL-XL) has several > sub-variations, though Gutenprint probably wouldn't care about any of > the differences other than optionally utilizing the class 3.0 halftoning > enhancements. Yep. PCL seems to be a whole mad world unto itself. Speaking of which, I've gone ahead and added all those other printers (I'm going to test the PPD files, then push). They're all tagged "UNTESTED Automatically Generated" so we can remove any/all of them (or find some other way to eliminate them, at least in the interim) if needed. Pushing them will be the only way to get them tested. I'm debating what to do on the 5.2 branch, though. And that (along with maybe cleanup of test-rastertogutenprint) will be it for my break. I still have a few other things I need to do before back to work on Tuesday. > Brother appears to use use PCL5e and PCL6 interchangeably for monochrome > printers, and for color printers, sometimes PCL6 is explicitly listed as > monochrome-only whether or not PCL5c is listed. > > (I have a monochrome Brother HL-5340 at home, nominally supporting PS > level 3 and PCL6. I'll try sending it a gutenprint-generated PCL5e > raster to see what happens. Might as well find out how well the > Gutenprint PS driver works too!) > >> What a mess.. > > Even a decade after starting to peek under the skirts of how printers > actually work, I still find new ways to be amazed/dismayed.. That's one way to put it. Till and I have been doing this stuff even longer. -- Robert Krawitz <rl...@al...> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton |
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From: Solomon P. <pi...@sh...> - 2017-12-30 12:13:12
Attachments:
signature.asc
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On Fri, Dec 29, 2017 at 10:05:32PM -0500, Robert Krawitz wrote:
> Speaking of which, I've gone ahead and added all those other printers
> (I'm going to test the PPD files, then push). They're all tagged
> "UNTESTED Automatically Generated" so we can remove any/all of them
> (or find some other way to eliminate them, at least in the interim) if
> needed. Pushing them will be the only way to get them tested. I'm
> debating what to do on the 5.2 branch, though.
BTW, here's a partial (network-enabled only, and incomplete at that)
list of the Brother printers that support PCL. I believe they are all
Letter/A4 size:
DCP-8065DN
DCP-8080DN
DCP-8085DN
DCP-8110DN
DCP-8150DN
DCP-8155DN
DCP-L2540DW
DCP-L5500DN
DCP-L5600DN
DCP-L5650DN
MFC-7840W
MFC-7860DW
MFC-8460N
MFC-8480DN
MFC-8510DN
MFC-8660DN
MFC-8670DN
MFC-8680DN
MFC-8690DW
MFC-8710DW
MFC-8810DW
MFC-8860DN
MFC-8870DW
MFC-8890DW
MFC-8910DW
MFC-8950DW
MFC-8950DWT
MFC-L2720DW
MFC-L2740DW
MFC-L5700DW
MFC-L5800DW
MFC-L5850DW
MFC-L5900DW
MFC-L6700DW
MFC-L6750DW
MFC-L6800DW
MFC-L6900DW
HL-2170W
HL-2270DW
HL-2275DW
HL-2280DW
HL-3170CDW
HL-5250DN
HL-5250DNT
HL-5280DW
HL-5350DN
HL-5370DW
HL-5370DWT
HL-5450DN
HL-5470DW
HL-5470DWT
HL-6180DW
HL-6180DWT
HL-L2360DW
HL-L2380DW
HL-L5100DN
HL-L5200DW
HL-L5200DWT
HL-L6200DW
HL-L6200DWT
HL-L6250DW
HL-L6300DW
HL-L6400DW
HL-L6400DWT
I can add them all en-masse if you'd like..
- Solomon
--
Solomon Peachy pizza at shaftnet dot org
Coconut Creek, FL ^^ (email/xmpp) ^^
Quidquid latine dictum sit, altum videtur.
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From: Robert K. <rl...@al...> - 2017-12-28 18:43:43
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On Thu, 28 Dec 2017 13:41:45 -0500, Solomon Peachy wrote: > On Thu, Dec 28, 2017 at 12:52:49PM -0500, Robert Krawitz wrote: >> OK, I've bench tested it using the GIMP plugin and run-testpattern-2, >> using pcl-unprint, but I don't actually have a color laser printer to >> try it out on. Could someone with a color laser printer pull the >> latest bits and try it (using the appropriate generic color laser >> printer driver)? > > I have access to two different models of HP color laser printers at the > office (MFP M680 and CP5225DN). Both support both PCL and PostScript. > > I will do a quick build and test-print (via gimp plugin) and see what > happens.. Thanks! -- Robert Krawitz <rl...@al...> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton |
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From: Solomon P. <pi...@sh...> - 2017-12-28 19:12:03
Attachments:
signature.asc
IMG_20171228_140516.jpg
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On Thu, Dec 28, 2017 at 01:43:34PM -0500, Robert Krawitz wrote: > > I will do a quick build and test-print (via gimp plugin) and see what > > happens.. > > Thanks! It looks like it worked! Every option was default except for the page size -- Letter for one, Tabloid for the other. Using "Generic PCL color Laser" and the "LF" variant. - Solomon -- Solomon Peachy pizza at shaftnet dot org Coconut Creek, FL ^^ (email/xmpp) ^^ Quidquid latine dictum sit, altum videtur. |
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From: Robert K. <rl...@al...> - 2017-12-28 19:20:41
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On Thu, 28 Dec 2017 14:11:52 -0500, Solomon Peachy wrote: > On Thu, Dec 28, 2017 at 01:43:34PM -0500, Robert Krawitz wrote: >> > I will do a quick build and test-print (via gimp plugin) and see what >> > happens.. >> >> Thanks! > > It looks like it worked! Every option was default except for the page > size -- Letter for one, Tabloid for the other. Using "Generic PCL color > Laser" and the "LF" variant. Well, that's good news. What's the quality like? Till, can you get me a list of PCL color laser printers (either in the current Gutenprint printer list) and their format and if possible whether they use funky A4 margins? I'd like to get the printer list updated. This shouldn't be difficult to backport to 5.2, and it's an obvious candidate. -- Robert Krawitz <rl...@al...> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton |
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From: Solomon P. <pi...@sh...> - 2017-12-28 19:38:31
Attachments:
signature.asc
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On Thu, Dec 28, 2017 at 02:20:27PM -0500, Robert Krawitz wrote: > Well, that's good news. What's the quality like? I didn't use a very high-resolution source image, but the colors looked good and there were no noticable artifacts. I just tried again with a very high-res image, but it came out distorted on both printers -- It looks like the scaling/resolutions used on both axes are wrong if the source image is higher res than the printer's. (I can send you a photo of the output if you want..) - Solomon -- Solomon Peachy pizza at shaftnet dot org Coconut Creek, FL ^^ (email/xmpp) ^^ Quidquid latine dictum sit, altum videtur. |
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From: Till K. <til...@gm...> - 2017-12-28 22:36:32
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On 12/28/2017 05:20 PM, Robert Krawitz wrote:
>> It looks like it worked! Every option was default except for the page
>> size -- Letter for one, Tabloid for the other. Using "Generic PCL color
>> Laser" and the "LF" variant.
>
> Well, that's good news. What's the quality like?
>
> Till, can you get me a list of PCL color laser printers (either in the
> current Gutenprint printer list) and their format and if possible
> whether they use funky A4 margins? I'd like to get the printer list
> updated.
>
Robert, what you did is a PCL 5c driver. So all printers which
understand PCL 5c should work with it.
So the first step is to take the foomatic-db package and look for
suitable printers there. Suitable according to foomatic-db are all
printers which are supported by a PCL 5c driver. PCL 5c drivers are
"cljet5" and "hpijs-pcl5c". See the printer listed in the appropriate
driver XML files or these drivers mentioned in printer XML files.
Many printers print in color via PCL 6/XL. These printers are supported
by the "pxlcolor" driver or the "pxlcolor-..." drivers. It is possible
that all PCL 6/XL printers support also PCL 5 (c in case of color
printers). We need some printer expert to tell us whether this is the
case. If so, there are meny more printers which you could add to the list.
Also the ready-made manuafacturer PPDs which come with foomatic-db can
help if they inform somehow which languages the printer supports in
addition to PostScript (printers which support color and PCL).
The second step is, as you already told in a later mail, to find all the
PCL 5c printers according to the HPLIP package. For this, install HPLIP
and have a look into the file
/usr/share/hplip/data/models/models.dat
Search for the model entries with "tech-class=LJColor". The
"tech-subclass=..." informs about special things, like 300-dpi-only, A3
format, ...
HPLIP helps to find also the newest models, but only HP, whereas
foomatic-db also helps on other brands, but the newest models are only
listed from Ricoh and OEM.
> This shouldn't be difficult to backport to 5.2, and it's an obvious
> candidate.
>
Would be great to have it. Improvement on PCL-5c printer support would
be great.
Till
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From: Robert K. <rl...@al...> - 2017-12-28 19:56:55
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On Thu, 28 Dec 2017 14:38:22 -0500, Solomon Peachy wrote: > On Thu, Dec 28, 2017 at 02:20:27PM -0500, Robert Krawitz wrote: >> Well, that's good news. What's the quality like? > > I didn't use a very high-resolution source image, but > the colors looked good and there were no noticable artifacts. > > I just tried again with a very high-res image, but it came out distorted > on both printers -- It looks like the scaling/resolutions used on both > axes are wrong if the source image is higher res than the printer's. > > (I can send you a photo of the output if you want..) Please do. No doubt it's a problem in the rescaling code. -- Robert Krawitz <rl...@al...> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton |
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From: Robert K. <rl...@al...> - 2017-12-28 20:04:17
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On Thu, 28 Dec 2017 14:38:22 -0500, Solomon Peachy wrote: > On Thu, Dec 28, 2017 at 02:20:27PM -0500, Robert Krawitz wrote: >> Well, that's good news. What's the quality like? > > I didn't use a very high-resolution source image, but > the colors looked good and there were no noticable artifacts. > > I just tried again with a very high-res image, but it came out distorted > on both printers -- It looks like the scaling/resolutions used on both > axes are wrong if the source image is higher res than the printer's. > > (I can send you a photo of the output if you want..) Never mind, I found and fixed the bug. -- Robert Krawitz <rl...@al...> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton |
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From: Solomon P. <pi...@sh...> - 2017-12-28 20:24:44
Attachments:
signature.asc
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On Thu, Dec 28, 2017 at 03:04:05PM -0500, Robert Krawitz wrote: > Never mind, I found and fixed the bug. I can confirm the output is sane now! - Solomon -- Solomon Peachy pizza at shaftnet dot org Coconut Creek, FL ^^ (email/xmpp) ^^ Quidquid latine dictum sit, altum videtur. |
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From: Robert K. <rl...@al...> - 2017-12-28 20:57:50
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On Thu, 28 Dec 2017 15:24:34 -0500, Solomon Peachy wrote: > On Thu, Dec 28, 2017 at 03:04:05PM -0500, Robert Krawitz wrote: >> Never mind, I found and fixed the bug. > > I can confirm the output is sane now! Somehow, I thought I had tested that...guess not. Well, all's well that ends well, I guess. I'm in the process of adding a whole stack of printers from HPLIP and HPIJS. I'm sure there are a lot more that I don't know about. -- Robert Krawitz <rl...@al...> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton |
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From: Robert K. <rl...@al...> - 2017-12-29 02:49:47
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One other note, we've now broken the 3000 printer mark! Of course, a lot of those are just naming and other trivial variations, but everyone else counts things that way, why shouldn't we? On Thu, 28 Dec 2017 20:36:20 -0200, Till Kamppeter wrote: > On 12/28/2017 05:20 PM, Robert Krawitz wrote: >>> It looks like it worked! Every option was default except for the page >>> size -- Letter for one, Tabloid for the other. Using "Generic PCL color >>> Laser" and the "LF" variant. >> >> Well, that's good news. What's the quality like? >> >> Till, can you get me a list of PCL color laser printers (either in the >> current Gutenprint printer list) and their format and if possible >> whether they use funky A4 margins? I'd like to get the printer list >> updated. > > Robert, what you did is a PCL 5c driver. So all printers which understand PCL 5c should work with it. Yep. > So the first step is to take the foomatic-db package and look for suitable printers there. Suitable according to foomatic-db are all printers which are supported by a PCL 5c driver. PCL 5c drivers are "cljet5" and "hpijs-pcl5c". See the printer listed in the appropriate driver XML files or these drivers mentioned in printer XML files. Done. A fair bit of grunt work. > Many printers print in color via PCL 6/XL. These printers are supported by the "pxlcolor" driver or the "pxlcolor-..." drivers. It is possible that all PCL 6/XL printers support also PCL 5 (c in case of color printers). We need some printer expert to tell us whether this is the case. If so, there are meny more printers which you could add to the list. Hopefully they do. PCL XL isn't something I really want to get involved with, and it doesn't appear to offer a lot of advantages to purely raster drivers. It looks like it's basically an open GDI printer. Perhaps someone here knows? There's one worrisome comment: Xerox-WorkCentre_7345.xml: "pxlcolor" and HPIJS are the only drivers that currently print in colour. But there are probably a lot of random comments in the foomatic database. > Also the ready-made manuafacturer PPDs which come with foomatic-db can help if they inform somehow which languages the printer supports in addition to PostScript (printers which support color and PCL). That's going to be a lot more grunt work to look through :-( > The second step is, as you already told in a later mail, to find all the PCL 5c printers according to the HPLIP package. For this, install HPLIP and have a look into the file > > /usr/share/hplip/data/models/models.dat > > Search for the model entries with "tech-class=LJColor". The "tech-subclass=..." informs about special things, like 300-dpi-only, A3 format, ... Thanks. I did that. I found a lot more strays from the Foomatic database, though. > HPLIP helps to find also the newest models, but only HP, whereas foomatic-db also helps on other brands, but the newest models are only listed from Ricoh and OEM. Yep. hpijs, though, lists other manufacturers' printers. >> This shouldn't be difficult to backport to 5.2, and it's an obvious >> candidate. > > Would be great to have it. Improvement on PCL-5c printer support would be great. That shouldn't take me too long. The printers.xml breakup means a bit more work, but probably not much, since the file format didn't actually change and hopefully I can just drop the contents of pcl.xml into printers.xml. I'd like to get that done during my remaining 4 days of holiday. -- Robert Krawitz <rl...@al...> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton |
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From: Till K. <til...@gm...> - 2017-12-29 15:08:50
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On 12/29/2017 12:49 AM, Robert Krawitz wrote:
> One other note, we've now broken the 3000 printer mark! Of course, a
> lot of those are just naming and other trivial variations, but
> everyone else counts things that way, why shouldn't we?
>
So the fraction of printers supporting standard PDLs (like PCL 5c) is
not that bad, and with the advent of the smartphone standard PDLs got
fashion again, but this time we call it driverless printing and the PDLs
are Apple Raster, PWG Raster, PCLm, and PDF, all supported by CUPS and
cups-filters already. I do not know whether one can improve the quality
of such printers when implementing these PDLs in Gutenprint, as usually
the printers do internal color management and dithering work as the
phones simply send high-color-depth sRGB data and the printer is
supposed to do the rest.
> Hopefully they do. PCL XL isn't something I really want to get
> involved with, and it doesn't appear to offer a lot of advantages to
> purely raster drivers. It looks like it's basically an open GDI
> printer. Perhaps someone here knows? There's one worrisome comment:
>
The advantage is that we know a lot of printers (esp. Ricoh and OEM)
which support PCL XL and we are unsure whether they all support PCL 5c.
If you would make a Gutenprint driver which outputs PCL XL, you will
easily support 1000s of printers, but as Gutenprint is a raster driver
you will use only a very small subset of PCL XL.
> Xerox-WorkCentre_7345.xml: "pxlcolor" and HPIJS are the only drivers that currently print in colour.
>
This means that it does PCL XL ("pxlcolor" driver) and PCL 5c ("HPIJS"
driver).
>> HPLIP helps to find also the newest models, but only HP, whereas foomatic-db also helps on other brands, but the newest models are only listed from Ricoh and OEM.
>
> Yep. hpijs, though, lists other manufacturers' printers.
>
The Foomatic entries of HPIJS, not the models.dat which comes with HPLIP.
> That shouldn't take me too long. The printers.xml breakup means a bit
> more work, but probably not much, since the file format didn't
> actually change and hopefully I can just drop the contents of pcl.xml
> into printers.xml. I'd like to get that done during my remaining 4
> days of holiday.
>
Great.
Till
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From: Robert K. <rl...@al...> - 2017-12-29 03:14:44
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On Thu, 28 Dec 2017 20:36:20 -0200, Till Kamppeter wrote: > Many printers print in color via PCL 6/XL. These printers are > supported by the "pxlcolor" driver or the "pxlcolor-..." drivers. It > is possible that all PCL 6/XL printers support also PCL 5 (c in case > of color printers). We need some printer expert to tell us whether > this is the case. If so, there are meny more printers which you > could add to the list. Apparently there are some printers that claim to support PCL6, but don't have PCL5 compatibility, but I haven't found a list. So it will likely be a case by case basis. The question is whether we only add printers after someone tests them, or whether we add everything not known to have a problem and let people complain. -- Robert Krawitz <rl...@al...> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton |
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From: Robert K. <rl...@al...> - 2017-12-29 03:30:42
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On Thu, 28 Dec 2017 20:36:20 -0200, Till Kamppeter wrote:
> Many printers print in color via PCL 6/XL. These printers are
> supported by the "pxlcolor" driver or the "pxlcolor-..." drivers. It
> is possible that all PCL 6/XL printers support also PCL 5 (c in case
> of color printers). We need some printer expert to tell us whether
> this is the case. If so, there are meny more printers which you
> could add to the list.
So I removed all files that contain "proprietary" and ran the
following command. That's a lot more printers we can support, if
we're confident that they'll actually support PCL 5c. Then, of
course, there's the matter of determining the form factor for each.
$ grep -i pxlcolor * |grep -i driver |awk '{print $1}' |sed 's/.xml://'
Brother-HL-4040CN
Canon-imageRunner_C2550
Canon-imageRunner_C5058
Canon-imageRunner_C5068
Canon-imageRunner_C5185
Canon-imageRunner_C5185i
Dell-3000cn
Dell-3100cn
Gestetner-CS555
Gestetner-DSc1020
Gestetner-DSc1025
Gestetner-DSc1030
Gestetner-DSc1045
Gestetner-DSc1060
Gestetner-DSc1120
Gestetner-DSc1220
Gestetner-DSc1225
Gestetner-DSc1230
Gestetner-DSc1245
Gestetner-DSc1260
Gestetner-DSc424
Gestetner-DSc428
Gestetner-DSc432
Gestetner-DSc435
Gestetner-DSc445
Gestetner-DSc460
Gestetner-MPC1500_GS106
Gestetner-MPC2500_DSc525
Gestetner-MPC3000_DSc530
Gestetner-MPC3500_DSc535
Gestetner-MPC4500_DSc545
Gestetner-MP_C2003
Gestetner-MP_C2004
Gestetner-MP_C2011
Gestetner-MP_C2050
Gestetner-MP_C2051
Gestetner-MP_C2503
Gestetner-MP_C2504
Gestetner-MP_C2550
Gestetner-MP_C2551
Gestetner-MP_C2800
Gestetner-MP_C300
Gestetner-MP_C3001
Gestetner-MP_C3002
Gestetner-MP_C3003
Gestetner-MP_C3004
Gestetner-MP_C300SR
Gestetner-MP_C3300
Gestetner-MP_C3501
Gestetner-MP_C3502
Gestetner-MP_C3503
Gestetner-MP_C3504
Gestetner-MP_C400
Gestetner-MP_C4000
Gestetner-MP_C400SR
Gestetner-MP_C4501
Gestetner-MP_C4501A
Gestetner-MP_C4502
Gestetner-MP_C4502A
Gestetner-MP_C4503
Gestetner-MP_C4504
Gestetner-MP_C5000
Gestetner-MP_C5501
Gestetner-MP_C5501A
Gestetner-MP_C5502
Gestetner-MP_C5502A
Gestetner-MP_C5503
Gestetner-MP_C6000
Gestetner-MP_C6003
Gestetner-MP_C6004
Gestetner-MP_C6501
Gestetner-MP_C6502
Gestetner-MP_C6503
Gestetner-MP_C7500
Gestetner-MP_C7501
Gestetner-MP_C8002
Gestetner-MP_C8003
Gestetner-Pro_C5200S
Gestetner-Pro_C5210S
Infotec-ISC_1024c
Infotec-ISC_1032c
Infotec-ISC_2428
Infotec-ISC_2525
Infotec-ISC_2835
Infotec-ISC_3030
Infotec-ISC_3535
Infotec-ISC_3545
Infotec-ISC_4045
Infotec-ISC_4560
Infotec-ISC_5560
Infotec-ISC_615G
Infotec-MP_C2003
Infotec-MP_C2003Z
Infotec-MP_C2004
Infotec-MP_C2011
Infotec-MP_C2050
Infotec-MP_C2051
Infotec-MP_C2503
Infotec-MP_C2503Z
Infotec-MP_C2504
Infotec-MP_C2550
Infotec-MP_C2551
Infotec-MP_C2800
Infotec-MP_C300
Infotec-MP_C3001
Infotec-MP_C3002
Infotec-MP_C3003
Infotec-MP_C3004
Infotec-MP_C300SR
Infotec-MP_C3300
Infotec-MP_C3501
Infotec-MP_C3502
Infotec-MP_C3503
Infotec-MP_C3504
Infotec-MP_C400
Infotec-MP_C4000
Infotec-MP_C400SR
Infotec-MP_C4501
Infotec-MP_C4501A
Infotec-MP_C4502
Infotec-MP_C4502A
Infotec-MP_C4503
Infotec-MP_C4504
Infotec-MP_C5000
Infotec-MP_C5501
Infotec-MP_C5501A
Infotec-MP_C5502
Infotec-MP_C5502A
Infotec-MP_C5503
Infotec-MP_C5504
Infotec-MP_C6000
Infotec-MP_C6003
Infotec-MP_C6004
Infotec-MP_C6501
Infotec-MP_C6502
Infotec-MP_C6503
Infotec-MP_C7500
Infotec-MP_C7501
Infotec-MP_C8002
Infotec-MP_C8003
Infotec-Pro_C5100S
Infotec-Pro_C5110S
Infotec-Pro_C5200S
Infotec-Pro_C5210S
Infotec-Pro_C7100
Infotec-Pro_C7100S
Infotec-Pro_C7110
Infotec-Pro_C7110S
Lanier-LC155
Lanier-LD124c
Lanier-LD132c
Lanier-LD160c
Lanier-LD328c
Lanier-LD335c
Lanier-LD345c
Lanier-LD_130C
Lanier-LD_130CSR
Lanier-LD_140C
Lanier-LD_140CSR
Lanier-LD_620C
Lanier-LD_625C
Lanier-MPC1500_LD215c
Lanier-MPC4501A_LD645CA
Lanier-MPC5501A_LD655CA
Lanier-MP_C2003
Lanier-MP_C2004
Lanier-MP_C2050_LD520C
Lanier-MP_C2500_LD425c
Lanier-MP_C2503
Lanier-MP_C2504
Lanier-MP_C2550_LD525C
Lanier-MP_C2800_LD528C
Lanier-MP_C300
Lanier-MP_C3000_LD430c
Lanier-MP_C3001_LD630C
Lanier-MP_C3002
Lanier-MP_C3003
Lanier-MP_C3004
Lanier-MP_C300SR
Lanier-MP_C3300_LD533C
Lanier-MP_C3500_LD435c
Lanier-MP_C3501_LD635C
Lanier-MP_C3502
Lanier-MP_C3503
Lanier-MP_C3504
Lanier-MP_C400
Lanier-MP_C4000_LD540C
Lanier-MP_C400SR
Lanier-MP_C4500_LD445c
Lanier-MP_C4501_LD645C
Lanier-MP_C4502
Lanier-MP_C4502A
Lanier-MP_C4503
Lanier-MP_C4504
Lanier-MP_C5000_LD550C
Lanier-MP_C5501_LD655C
Lanier-MP_C5502
Lanier-MP_C5502A
Lanier-MP_C5503
Lanier-MP_C6000_LD260c
Lanier-MP_C6003
Lanier-MP_C6004
Lanier-MP_C6501_LD365C
Lanier-MP_C6502
Lanier-MP_C6503
Lanier-MP_C7500_LD275c
Lanier-MP_C7501_LD375C
Lanier-MP_C8002
Lanier-MP_C8003
Lanier-Pro_C5100S
Lanier-Pro_C5110S
Lanier-Pro_C5200S
Lanier-Pro_C5210S
Lanier-Pro_C7100
Lanier-Pro_C7100S
Lanier-Pro_C7110
Lanier-Pro_C7110S
Lanier-SG3110DN
Lanier-SG3110DNw
Lanier-SG3110SFNw
NRG-CS555
NRG-DSc424
NRG-DSc428
NRG-DSc432
NRG-DSc435
NRG-DSc445
NRG-DSc460
NRG-MP_C1500sp
NRG-MP_C2003
NRG-MP_C2003Z
NRG-MP_C2004
NRG-MP_C2011
NRG-MP_C2050
NRG-MP_C2051
NRG-MP_C2500
NRG-MP_C2503
NRG-MP_C2503Z
NRG-MP_C2504
NRG-MP_C2550
NRG-MP_C2551
NRG-MP_C2800
NRG-MP_C300
NRG-MP_C3000
NRG-MP_C3001
NRG-MP_C3002
NRG-MP_C3003
NRG-MP_C3004
NRG-MP_C300SR
NRG-MP_C3300
NRG-MP_C3500
NRG-MP_C3501
NRG-MP_C3502
NRG-MP_C3503
NRG-MP_C3504
NRG-MP_C400
NRG-MP_C4000
NRG-MP_C400SR
NRG-MP_C4500
NRG-MP_C4501
NRG-MP_C4501A
NRG-MP_C4502
NRG-MP_C4502A
NRG-MP_C4503
NRG-MP_C4504
NRG-MP_C5000
NRG-MP_C5501
NRG-MP_C5501A
NRG-MP_C5502
NRG-MP_C5502A
NRG-MP_C5503
NRG-MP_C5504
NRG-MP_C6000
NRG-MP_C6003
NRG-MP_C6004
NRG-MP_C6501
NRG-MP_C6502
NRG-MP_C6503
NRG-MP_C7500
NRG-MP_C7501
NRG-MP_C8002
NRG-MP_C8003
NRG-Pro_C5100S
NRG-Pro_C5110S
NRG-Pro_C5200S
NRG-Pro_C5210S
NRG-Pro_C7100
NRG-Pro_C7100S
NRG-Pro_C7110
NRG-Pro_C7110S
NRG-SG3110DN
NRG-SG3110DNw
NRG-SG3110SFNw
Oki-C8800
Panasonic-DP-180
Panasonic-DP-C265
Panasonic-DP-C305
Panasonic-DP-C322
Panasonic-DP-C405
Ricoh-AficioSG3110DN
Ricoh-AficioSG3110DNw
Ricoh-AficioSG3110SFNw
Ricoh-Aficio_3224C
Ricoh-Aficio_3228C
Ricoh-Aficio_3232C
Ricoh-Aficio_3235C
Ricoh-Aficio_3245C
Ricoh-Aficio_3260C
Ricoh-Aficio_Color5560
Ricoh-Aficio_MP_C2050
Ricoh-Aficio_MP_C2051
Ricoh-Aficio_MP_C2500
Ricoh-Aficio_MP_C2550
Ricoh-Aficio_MP_C2551
Ricoh-Aficio_MP_C2800
Ricoh-Aficio_MP_C300
Ricoh-Aficio_MP_C3000
Ricoh-Aficio_MP_C3001
Ricoh-Aficio_MP_C3002
Ricoh-Aficio_MP_C300SR
Ricoh-Aficio_MP_C3300
Ricoh-Aficio_MP_C3500
Ricoh-Aficio_MP_C3501
Ricoh-Aficio_MP_C3502
Ricoh-Aficio_MP_C400
Ricoh-Aficio_MP_C4000
Ricoh-Aficio_MP_C400SR
Ricoh-Aficio_MP_C4500
Ricoh-Aficio_MP_C4501
Ricoh-Aficio_MP_C4501A
Ricoh-Aficio_MP_C4502
Ricoh-Aficio_MP_C4502A
Ricoh-Aficio_MP_C5000
Ricoh-Aficio_MP_C5501
Ricoh-Aficio_MP_C5501A
Ricoh-Aficio_MP_C5502
Ricoh-Aficio_MP_C5502A
Ricoh-Aficio_MP_C6000
Ricoh-Aficio_MP_C6501
Ricoh-Aficio_MP_C7500
Ricoh-Aficio_MP_C7501
Ricoh-GX_3050N
Ricoh-GX_3050SFN
Ricoh-GX_5050N
Ricoh-GX_E3350N
Ricoh-GX_E5550N
Ricoh-MP_C1500_615C
Ricoh-MP_C2003
Ricoh-MP_C2003Z
Ricoh-MP_C2004
Ricoh-MP_C2011
Ricoh-MP_C2094J
Ricoh-MP_C2503
Ricoh-MP_C2503Z
Ricoh-MP_C2504
Ricoh-MP_C2594J
Ricoh-MP_C3003
Ricoh-MP_C3004
Ricoh-MP_C3503
Ricoh-MP_C3504
Ricoh-MP_C4503
Ricoh-MP_C4504
Ricoh-MP_C5503
Ricoh-MP_C5504
Ricoh-MP_C6003
Ricoh-MP_C6004
Ricoh-MP_C6502
Ricoh-MP_C6503
Ricoh-MP_C8002
Ricoh-MP_C8003
Ricoh-Pro_C5100S
Ricoh-Pro_C5110S
Ricoh-Pro_C5200S
Ricoh-Pro_C5210S
Ricoh-Pro_C7100
Ricoh-Pro_C7100S
Ricoh-Pro_C7110
Ricoh-Pro_C7110S
Ricoh-SG3120BSFNw
Samsung-CLP-620
Samsung-CLP-660N
Samsung-CLP-660ND
Savin-C2410
Savin-C2525
Savin-C2824
Savin-C2828
Savin-C3030
Savin-C3210e
Savin-C3333
Savin-C3528
Savin-C3535
Savin-C4040
Savin-C4535
Savin-C4540
Savin-C5050
Savin-C6045
Savin-C6055
Savin-C7570
Savin-C9020
Savin-C9025
Savin-C9065
Savin-C9075
Savin-C9120
Savin-C9125
Savin-C9130
Savin-C9135
Savin-C9145
Savin-C9145A
Savin-C9155
Savin-C9155A
Savin-C_230
Savin-C_230SR
Savin-C_240
Savin-C_240SR
Savin-MP_C2003
Savin-MP_C2004
Savin-MP_C2503
Savin-MP_C2504
Savin-MP_C3002
Savin-MP_C3003
Savin-MP_C3004
Savin-MP_C3502
Savin-MP_C3503
Savin-MP_C3504
Savin-MP_C4502
Savin-MP_C4502A
Savin-MP_C4503
Savin-MP_C4504
Savin-MP_C5502
Savin-MP_C5502A
Savin-MP_C5503
Savin-MP_C6003
Savin-MP_C6004
Savin-MP_C6502
Savin-MP_C6503
Savin-MP_C8002
Savin-MP_C8003
Savin-Pro_C5100S
Savin-Pro_C5110S
Savin-Pro_C5200S
Savin-Pro_C5210S
Savin-Pro_C7100
Savin-Pro_C7100S
Savin-Pro_C7110
Savin-Pro_C7110S
Savin-SDC555
Savin-SG3110DN
Savin-SG3110DNw
Savin-SG3110SFNw
Savin-SGC_1506
Sharp-AR-BC260
Sharp-AR-BC320
Sharp-AR-C170FP
Sharp-AR-C170M
Sharp-AR-C172FP
Sharp-AR-C172M
Sharp-AR-C260
Sharp-AR-C260F
Sharp-AR-C260FP
Sharp-AR-C260M
Sharp-AR-C260P
Sharp-AR-C260S
Sharp-AR-C261F
Sharp-AR-C261FP
Sharp-AR-C261M
Sharp-AR-C261S
Sharp-AR-C262FP
Sharp-AR-C262M
Sharp-AR-C262S
Sharp-MX-2300FG
Sharp-MX-2300G
Sharp-MX-2300N
Sharp-MX-2700FG
Sharp-MX-2700G
Sharp-MX-2700N
Sharp-MX-3500FN
Sharp-MX-3500N
Sharp-MX-3501FN
Sharp-MX-3501N
Sharp-MX-4500FN
Sharp-MX-4500N
Sharp-MX-4501FN
Sharp-MX-4501N
Toshiba-e-Studio_220cp
Toshiba-e-Studio_2830c
Toshiba-e-Studio_3530c
Toshiba-e-Studio_4500c
Toshiba-e-Studio_4520c
Toshiba-e-Studio_5500c
Xerox-Phaser_3160N
--
Robert Krawitz <rl...@al...>
*** MIT Engineers A Proud Tradition http://mitathletics.com ***
Member of the League for Programming Freedom -- http://ProgFree.org
Project lead for Gutenprint -- http://gimp-print.sourceforge.net
"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton
|
|
From: Till K. <til...@gm...> - 2017-12-29 14:38:45
|
On 12/29/2017 01:30 AM, Robert Krawitz wrote:
> So I removed all files that contain "proprietary" and ran the
> following command.
If they contain both "proprietary" and "PCL 5c", this is OK, then they
support PCL 5c. This means that they support two PDLs, one is PCL 5c,
the other is a proprietary PDL. Only the ones with only "proprietary" in
their list of PDLs are the bad guys, as they actually need a specialized
driver for their proprietary language (some of such drivers existm, like
foo2zjs, SpliX, ...).
> That's a lot more printers we can support, if
> we're confident that they'll actually support PCL 5c. Then, of
> course, there's the matter of determining the form factor for each.
>
> $ grep -i pxlcolor * |grep -i driver |awk '{print $1}' |sed 's/.xml://'
[...]
There are a lot of printers supporting PCL XL, and as we are not sure
whether they all also support PCL 5c it would make sense for a
high-quality raster driver like Gutenprint to also output PCL XL, even
if we only make use of a small subset of this language.
Till
|
|
From: Solomon P. <pi...@sh...> - 2017-12-29 13:56:16
Attachments:
signature.asc
|
On Thu, Dec 28, 2017 at 10:30:29PM -0500, Robert Krawitz wrote: > So I removed all files that contain "proprietary" and ran the > following command. That's a lot more printers we can support, if > we're confident that they'll actually support PCL 5c. Then, of > course, there's the matter of determining the form factor for each. There's also a pile of Brother Laser printers that could probably be added, but figuring out which ones support PCL5c is going to be a bit of a PITA. The old rule of thumb was that the 1xxx and 2xxx series were GDI, whereas the rest usually supported both PCL (5c and 6) as well as Postscript, but it looks like more recent models have all dropped PCL5c, and some of the 2xxx series support PCL6 too. What a mess.. - Solomon -- Solomon Peachy pizza at shaftnet dot org Coconut Creek, FL ^^ (email/xmpp) ^^ Quidquid latine dictum sit, altum videtur. |
|
From: Robert K. <rl...@al...> - 2017-12-29 15:06:31
|
On Fri, 29 Dec 2017 12:38:33 -0200, Till Kamppeter wrote:
> On 12/29/2017 01:30 AM, Robert Krawitz wrote:
>> So I removed all files that contain "proprietary" and ran the
>> following command.
>
> If they contain both "proprietary" and "PCL 5c", this is OK, then they support PCL 5c. This means that they support two PDLs, one is PCL 5c, the other is a proprietary PDL. Only the ones with only "proprietary" in their list of PDLs are the bad guys, as they actually need a specialized driver for their proprietary language (some of such drivers existm, like foo2zjs, SpliX, ...).
I see.
>> That's a lot more printers we can support, if
>> we're confident that they'll actually support PCL 5c. Then, of
>> course, there's the matter of determining the form factor for each.
>>
>> $ grep -i pxlcolor * |grep -i driver |awk '{print $1}' |sed 's/.xml://'
> [...]
>
> There are a lot of printers supporting PCL XL, and as we are not sure whether they all also support PCL 5c it would make sense for a high-quality raster driver like Gutenprint to also output PCL XL, even if we only make use of a small subset of this language.
The pxlcolor output is entirely different from "ordinary" PCL, which
confirms that PCL-XL is very different from other versions of PCL.
That's not something I can likely get to over the next few days.
--
Robert Krawitz <rl...@al...>
*** MIT Engineers A Proud Tradition http://mitathletics.com ***
Member of the League for Programming Freedom -- http://ProgFree.org
Project lead for Gutenprint -- http://gimp-print.sourceforge.net
"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton
|
|
From: Robert K. <rl...@al...> - 2017-12-29 15:23:32
|
On Fri, 29 Dec 2017 13:08:38 -0200, Till Kamppeter wrote:
> On 12/29/2017 12:49 AM, Robert Krawitz wrote:
>> One other note, we've now broken the 3000 printer mark! Of course, a
>> lot of those are just naming and other trivial variations, but
>> everyone else counts things that way, why shouldn't we?
>
> So the fraction of printers supporting standard PDLs (like PCL 5c) is not that bad, and with the advent of the smartphone standard PDLs got fashion again, but this time we call it driverless printing and the PDLs are Apple Raster, PWG Raster, PCLm, and PDF, all supported by CUPS and cups-filters already. I do not know whether one can improve the quality of such printers when implementing these PDLs in Gutenprint, as usually the printers do internal color management and dithering work as the phones simply send high-color-depth sRGB data and the printer is supposed to do the rest.
Gutenprint's not likely to offer any real quality advantages with
these printers; most of them (including PCL5c) actually rely on the
driver to send 8-bit pixel data (much like ESCP/R). We could
potentially offer functionality advantages, and of course, being the
one-stop shop for (non-GDI) printers.
>> Hopefully they do. PCL XL isn't something I really want to get
>> involved with, and it doesn't appear to offer a lot of advantages to
>> purely raster drivers. It looks like it's basically an open GDI
>> printer. Perhaps someone here knows? There's one worrisome comment:
>
> The advantage is that we know a lot of printers (esp. Ricoh and OEM)
> which support PCL XL and we are unsure whether they all support PCL
> 5c. If you would make a Gutenprint driver which outputs PCL XL, you
> will easily support 1000s of printers, but as Gutenprint is a raster
> driver you will use only a very small subset of PCL XL.
I've heard from another source who is in a good position to know
viz-a-viz some of these printers (I was asked not to give this
person's name) that his/her understanding is that PCL6 includes PCL5
as a subset. It's also my understanding that this may not be
universally true.
>> Xerox-WorkCentre_7345.xml: "pxlcolor" and HPIJS are the only drivers that currently print in colour.
>
> This means that it does PCL XL ("pxlcolor" driver) and PCL 5c ("HPIJS" driver).
All of the ones listed as supporting pcl-5c in the Foomatic database
are already in.
>>> HPLIP helps to find also the newest models, but only HP, whereas foomatic-db also helps on other brands, but the newest models are only listed from Ricoh and OEM.
>>
>> Yep. hpijs, though, lists other manufacturers' printers.
>
> The Foomatic entries of HPIJS, not the models.dat which comes with HPLIP.
Yep, but that's good enough.
>> That shouldn't take me too long. The printers.xml breakup means a bit
>> more work, but probably not much, since the file format didn't
>> actually change and hopefully I can just drop the contents of pcl.xml
>> into printers.xml. I'd like to get that done during my remaining 4
>> days of holiday.
>>
>
> Great.
--
Robert Krawitz <rl...@al...>
*** MIT Engineers A Proud Tradition http://mitathletics.com ***
Member of the League for Programming Freedom -- http://ProgFree.org
Project lead for Gutenprint -- http://gimp-print.sourceforge.net
"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton
|
|
From: Solomon P. <pi...@sh...> - 2017-12-29 15:26:58
Attachments:
signature.asc
|
On Fri, Dec 29, 2017 at 08:56:05AM -0500, Solomon Peachy wrote: > There's also a pile of Brother Laser printers that could probably be > added, but figuring out which ones support PCL5c is going to be a bit of > a PITA. The old rule of thumb was that the 1xxx and 2xxx series were > GDI, whereas the rest usually supported both PCL (5c and 6) as well as > Postscript, but it looks like more recent models have all dropped PCL5c, > and some of the 2xxx series support PCL6 too. It's worse. 1xxx were always GDI, 2xxx were usually GDI but someimes GDI+PCL, 3xxx tended to be PCL, 4xxx and up were PCL+PS. Sometimes PCL5c or PCL5e, Sometimes PCL6, sometimes both. PS level 2 or 3 depending on the age -- and Brother's PS level 3 interpreter has a long-standing bug involving implicit EOF markers with compressed streams. And then there's the question of what exactly "PCL6" means in this context, given that could mean "PCL6 Standard" which is essentially just a renamed PCL5e/PCL5c. Even "PCL6 Enchanced" (aka PCL-XL) has several sub-variations, though Gutenprint probably wouldn't care about any of the differences other than optionally utilizing the class 3.0 halftoning enhancements. Brother appears to use use PCL5e and PCL6 interchangeably for monochrome printers, and for color printers, sometimes PCL6 is explicitly listed as monochrome-only whether or not PCL5c is listed. (I have a monochrome Brother HL-5340 at home, nominally supporting PS level 3 and PCL6. I'll try sending it a gutenprint-generated PCL5e raster to see what happens. Might as well find out how well the Gutenprint PS driver works too!) > What a mess.. Even a decade after starting to peek under the skirts of how printers actually work, I still find new ways to be amazed/dismayed.. - Solomon -- Solomon Peachy pizza at shaftnet dot org Coconut Creek, FL ^^ (email/xmpp) ^^ Quidquid latine dictum sit, altum videtur. |
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