gimp-print-devel

Re: [Gimp-print-devel] Printer resolution (limits), "native resolution", quality enhancement settings

[Robert K. <rl...@al...>]

On 6/13/21 8:46 PM, Marius Steffen wrote:
> Thanks for your quick answer.
> 
> Now, how would I go about to check, at least in my printer, if there’s any (and how much) benefit
> from printing beyond 2880x2880, and what should I expect?

Try it and see.  If you're printing photos or similar continuous-tone work, it probably won't make
much of a difference, particularly on a printer like the P800 with relatively large drops (3.5 pl)
and 3 shades of gray/black.  If you're printing pure black and white line art, it might, but in that
situation you're better off using a symmetric resolution like 2880x2880 or 1440x1440 rather than one
that isn't (you'll have less moire effect that way).  But if you really need that kind of
resolution, you'd want a printer with extremely small drops.

My own experience printing photos is that on the 3.5 and 4 pl CcMmYKkk printers, even 1440x720 works
very well and is much faster that, say, 2880x1440.

> Also: what’s the ideal resolution to send to the printer, as in pixel resolution, not dithered images?

Anything within reason that's a multiple of the spacing.  720 will give you very crisp text; 360 or
720 is quite ample for photos.  For very intricate line art, again, you'd ideally want to match the
printer resolution.

Re: [Gimp-print-devel] Printer resolution (limits), "native resolution", quality enhancement settings

[Marius S. <ma...@ma...>]

Thanks for your quick answer.

Now, how would I go about to check, at least in my printer, if there’s any (and how much) benefit from printing beyond 2880x2880, and what should I expect?

Also: what’s the ideal resolution to send to the printer, as in pixel resolution, not dithered images?

Marius Steffen
ma...@ma...



> Am 14.06.2021 um 02:15 schrieb Robert Krawitz <rl...@al...>:
> 
> On 6/13/21 4:56 PM, Marius Steffen wrote:
>> Hi,
>> 
>> I’m trying to wrap my head around all the stuff concerning resolution of my Epson P800, or printers
>> in general, hopefully being able to provide some corrections for my printer, as it’s still
>> „EXPERIMENTAL“.
>> 
>> For now, I’m trying to understand:
>> 1) How are the different printing resolutions chosen? Why is there no „5760x5760“ setting, or even
>> higher?
> 
> Based on what the printer can do.  No Epson printer that I know of can actually print 5760 dpi in
> the vertical direction.
> 
>> 2) What’s the limit for printer resolution given, a specific printer? My P800 is listed with a
>> maximum resolution of 2880x1440, how does Gutenprint achieve a higher resolution than this?
> 
> We've determined that some printers can achieve higher resolution that what's specified.  Some
> printers do work perfectly well at such high resolutions; some are iffy.
> 
>> 3) I’ve read some stuff about „native printer resolution“ - as I understand it, that’s the
>> resolution the driver down-/upsamples every raster graphic send to it. How is this chosen for a
>> specific printer in Gutenprint, and why? Do the choice of printing resolution does have any impact
>> on this?
> 
> "Native printer resolution" means whatever resolution the printer is actually set to.  So if you
> specify 5760x1440 dpi, that's the "native printer resolution" for that job.
> 
>> 4) What does the „Quality Enhancement“ setting do, and how is it concerned by printer resolution?
> 
> It breaks up each line of dots into more sub-lines, resulting in longer printing time but possibly
> better quality.  It's most likely to help if you have a bad nozzle or two  Some printers can't
> handle this, especially at already high resolutions.  Each step of quality enhancement doubles
> printing time.  You'll have to experiment to see if it helps; usually it doesn't.
> 
>> Thank you so much in advance for you explanations! :D
> 
> 
> _______________________________________________
> Gimp-print-devel mailing list
> Gim...@li...
> https://lists.sourceforge.net/lists/listinfo/gimp-print-devel

Re: [Gimp-print-devel] Printer resolution (limits), "native resolution", quality enhancement settings

[Robert K. <rl...@al...>]

On 6/13/21 4:56 PM, Marius Steffen wrote:
> Hi,
> 
> I’m trying to wrap my head around all the stuff concerning resolution of my Epson P800, or printers
> in general, hopefully being able to provide some corrections for my printer, as it’s still
> „EXPERIMENTAL“.
> 
> For now, I’m trying to understand:
> 1) How are the different printing resolutions chosen? Why is there no „5760x5760“ setting, or even
> higher?

Based on what the printer can do.  No Epson printer that I know of can actually print 5760 dpi in
the vertical direction.

> 2) What’s the limit for printer resolution given, a specific printer? My P800 is listed with a
> maximum resolution of 2880x1440, how does Gutenprint achieve a higher resolution than this?

We've determined that some printers can achieve higher resolution that what's specified.  Some
printers do work perfectly well at such high resolutions; some are iffy.

> 3) I’ve read some stuff about „native printer resolution“ - as I understand it, that’s the
> resolution the driver down-/upsamples every raster graphic send to it. How is this chosen for a
> specific printer in Gutenprint, and why? Do the choice of printing resolution does have any impact
> on this?

"Native printer resolution" means whatever resolution the printer is actually set to.  So if you
specify 5760x1440 dpi, that's the "native printer resolution" for that job.

> 4) What does the „Quality Enhancement“ setting do, and how is it concerned by printer resolution?

It breaks up each line of dots into more sub-lines, resulting in longer printing time but possibly
better quality.  It's most likely to help if you have a bad nozzle or two  Some printers can't
handle this, especially at already high resolutions.  Each step of quality enhancement doubles
printing time.  You'll have to experiment to see if it helps; usually it doesn't.

> Thank you so much in advance for you explanations! :D

[Gimp-print-devel] Printer resolution (limits), "native resolution", quality enhancement settings

[Marius S. <ma...@ma...>]

Hi,

I’m trying to wrap my head around all the stuff concerning resolution of my Epson P800, or printers in general, hopefully being able to provide some corrections for my printer, as it’s still „EXPERIMENTAL“.

For now, I’m trying to understand:
1) How are the different printing resolutions chosen? Why is there no „5760x5760“ setting, or even higher?
2) What’s the limit for printer resolution given, a specific printer? My P800 is listed with a maximum resolution of 2880x1440, how does Gutenprint achieve a higher resolution than this?
3) I’ve read some stuff about „native printer resolution“ - as I understand it, that’s the resolution the driver down-/upsamples every raster graphic send to it. How is this chosen for a specific printer in Gutenprint, and why? Do the choice of printing resolution does have any impact on this?
4) What does the „Quality Enhancement“ setting do, and how is it concerned by printer resolution?

Thank you so much in advance for you explanations! :D

Marius Steffen
ma...@ma...

Re: [Gimp-print-devel] Translation

[Robert K. <rl...@al...>]

On 6/7/21 3:11 PM, Quentin PAGÈS wrote:
> Hello,
> I'd like to have the pot file so I can send the translation in my language.
> Best regards
> 
> *Quentin PAGÈS*

Hi,

We use the Translation Project (www.translationproject.org) to do our translations.  Please register
there to do it.  Thanks!

[Gimp-print-devel] Translation

[Quentin P. <que...@fr...>]

Hello, 
I'd like to have the pot file so I can send the translation in my language. 
Best regards 


Quentin PAGÈS 

Re: [Gimp-print-devel] Raw input mode via CUPS?

[Robert K. <rl...@al...>]

On 6/4/21 8:21 PM, Marius Steffen wrote:
> Hi everbody,
> 
> I’m currently trying to partially replace Epson’s driver for my SureColor P800 printer. My specific
> reason is the driver’s inability to print CMYK and directly access all the printers ink channels.
> While I found out how to do CMYK prints using Gutenprint, I’m failing to do CcMmYKkk prints with
> files provided in DeviceN space.
>
> I’ve found this rather old message in the mailing list
> archive: https://sourceforge.net/p/gimp-print/mailman/message/19908513/
> <https://sourceforge.net/p/gimp-print/mailman/message/19908513/>
> Essentially, what I’m trying to do is what Robert described in 2) as „raw input with raw color
> correction“, but I’m failing to see how to do that via CUPS - is this even possible, or is one
> forced to do this outside of cups, with „pure“ Gutenprint?
> 
> Either way, how am I to do this?

You would have to do this outside of CUPS, at least.  CUPS (at least at the time we wrote the CUPS
driver for Gutenprint) doesn't support DeviceN.

Gutenprint provides (for Epson printers, at any rate) the underlying API to do this, but there
hasn't been enough interest to write a decent user tool to do this.  There is a hack in the
testpattern generator (src/testpattern) to do this, but to be honest I wrote this years ago just as
a demo and I don't remember myself how to use it.  What it amounts to is that you need to create a
file header with the required options (which there are examples of) and use the Raw output mode, and
then the data has to be provided in binary at the end of the file.  As I said, I (or somebody) would
have to study this myself to reconstruct how to use it.  The file format is straightforward enough,
8 or 16 byte native endian data in pixel order, but I just don't recall the details.

Re: [Gimp-print-devel] Raw input mode via CUPS?

[Marius S. <ma...@ma...>]

Thanks very much for this explanation - I’m unsure whether I’d be able to study and reconstruct this with reasonable effort and I’m not even sure about the benefit would be worth the effort to me.

Kind regards
Marius Steffen
ma...@ma...



> Am 05.06.2021 um 17:20 schrieb Robert Krawitz <rl...@al...>:
> 
> On 6/4/21 8:21 PM, Marius Steffen wrote:
>> Hi everbody,
>> 
>> I’m currently trying to partially replace Epson’s driver for my SureColor P800 printer. My specific
>> reason is the driver’s inability to print CMYK and directly access all the printers ink channels.
>> While I found out how to do CMYK prints using Gutenprint, I’m failing to do CcMmYKkk prints with
>> files provided in DeviceN space.
>> 
>> I’ve found this rather old message in the mailing list
>> archive: https://sourceforge.net/p/gimp-print/mailman/message/19908513/
>> <https://sourceforge.net/p/gimp-print/mailman/message/19908513/>
>> Essentially, what I’m trying to do is what Robert described in 2) as „raw input with raw color
>> correction“, but I’m failing to see how to do that via CUPS - is this even possible, or is one
>> forced to do this outside of cups, with „pure“ Gutenprint?
>> 
>> Either way, how am I to do this?
> 
> You would have to do this outside of CUPS, at least.  CUPS (at least at the time we wrote the CUPS
> driver for Gutenprint) doesn't support DeviceN.
> 
> Gutenprint provides (for Epson printers, at any rate) the underlying API to do this, but there
> hasn't been enough interest to write a decent user tool to do this.  There is a hack in the
> testpattern generator (src/testpattern) to do this, but to be honest I wrote this years ago just as
> a demo and I don't remember myself how to use it.  What it amounts to is that you need to create a
> file header with the required options (which there are examples of) and use the Raw output mode, and
> then the data has to be provided in binary at the end of the file.  As I said, I (or somebody) would
> have to study this myself to reconstruct how to use it.  The file format is straightforward enough,
> 8 or 16 byte native endian data in pixel order, but I just don't recall the details.

[Gimp-print-devel] Raw input mode via CUPS?

[Marius S. <ma...@ma...>]

Hi everbody,

I’m currently trying to partially replace Epson’s driver for my SureColor P800 printer. My specific reason is the driver’s inability to print CMYK and directly access all the printers ink channels. While I found out how to do CMYK prints using Gutenprint, I’m failing to do CcMmYKkk prints with files provided in DeviceN space.

I’ve found this rather old message in the mailing list archive: https://sourceforge.net/p/gimp-print/mailman/message/19908513/ <https://sourceforge.net/p/gimp-print/mailman/message/19908513/>
Essentially, what I’m trying to do is what Robert described in 2) as „raw input with raw color correction“, but I’m failing to see how to do that via CUPS - is this even possible, or is one forced to do this outside of cups, with „pure“ Gutenprint?

Either way, how am I to do this?

Kind regards
Marius Steffen
ma...@ma...

Re: [Gimp-print-devel] Canon GM4050

[Romain B. <rom...@ya...>]

Thanks Gernot, 
I ended up returning it back to Amazon. 
What a waste... Such a great printer, maybe the best in its category. Canon will never stop to amaze me with its stupid choices when it comes to Software. 
Thanks again for everything you're doing, you deserve medals, 
Romi 

Sent from Yahoo Mail on Android 
 
  On Tue, Jun 1, 2021 at 17:32, Gernot Hassenpflug<aik...@gm...> wrote:   On Thu, May 20, 2021 at 2:15 AM Romain Brami via Gimp-print-devel <gim...@li...> wrote:

Hi team Gutenprint,
I just bought an absolutely great printer, the Canon GM4050. But like often with Canon, the drivers offering is a nightmare. and incompatible with Mac Computers (I didn't even know this even still a thing).

Hello  Romain,Thank you for your contact.


I was thinking about using a small Ubuntu as a CUPS server but sadly I just found out the GM4050 is not part of GutenPrint.
Do you guys think there's a chance of adding it to the list?

Yes, unfortunately at present no GM models have been added to gutenprint. It is theoretically possible, quite a backlog at the moment but I will see what I can do in June.Best regards,Gernot Hassenpflug


Thanks,
Romi_______________________________________________
Gimp-print-devel mailing list
Gim...@li...
https://lists.sourceforge.net/lists/listinfo/gimp-print-devel



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Re: [Gimp-print-devel] Driver for Canon Maxify GX 6020

[Gernot H. <aik...@gm...>]

On Thu, May 20, 2021 at 2:15 AM Welches 3 <wel...@ho...> wrote:
>
> I'm using Fedora 33 and just purchased a Canon Maxify GX6020.  I should have looked at your support first.  Would one of the other Maxifys drivers work, or will you be supporting this one soon?
> Thanks,
> Dave

Hello Dave,
Many thanks for your contact.
Unfortunately no GX series have yet been added to gutenprint, this is
the first time I hear about such a series.
Interesting that this is a Maxify series, until now they have had the
prefixes iB (printer only) and MB (multifunction).
I will see what I can come up with in June.

Best regards,
Gernot Hassenpflug
> _______________________________________________
> Gimp-print-devel mailing list
> Gim...@li...
> https://lists.sourceforge.net/lists/listinfo/gimp-print-devel



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Tel: 070-5550-9076
https://www.proteawines.jp

Re: [Gimp-print-devel] Canon GM4050

[Gernot H. <aik...@gm...>]

On Thu, May 20, 2021 at 2:15 AM Romain Brami via Gimp-print-devel <
gim...@li...> wrote:

> Hi team Gutenprint,
>
> I just bought an absolutely great printer, the Canon GM4050. But like
> often with Canon, the drivers offering is a nightmare. and incompatible
> with Mac Computers (I didn't even know this even still a thing).
>

Hello  Romain,
Thank you for your contact.

>
> I was thinking about using a small Ubuntu as a CUPS server but sadly I
> just found out the GM4050 is not part of GutenPrint.
>
> Do you guys think there's a chance of adding it to the list?
>

Yes, unfortunately at present no GM models have been added to gutenprint.
It is theoretically possible, quite a backlog at the moment but I will see
what I can do in June.
Best regards,
Gernot Hassenpflug

>
> Thanks,
>
> Romi
> _______________________________________________
> Gimp-print-devel mailing list
> Gim...@li...
> https://lists.sourceforge.net/lists/listinfo/gimp-print-devel
>


-- 
Protea Wines Japan
Tel: 070-5550-9076
https://www.proteawines.jp

Re: [Gimp-print-devel] How is the workflow for newer printers support?

[Robert K. <rl...@al...>]

On 5/23/21 4:47 PM, Carlos via Gimp-print-devel wrote:
> On 5/23/21 11:38 AM, Robert Krawitz wrote:
>> On 5/23/21 2:03 AM, Carlos via Gimp-print-devel wrote:
>>> On 22/05/2021 20:39, Robert Krawitz wrote:
>>>> On 5/21/21 9:57 PM, Carlos via Gimp-print-devel wrote:
>>>>> Hi, I have a EPSON L3150 printer and installed gutenprint because I wanted to align heads (on
>>>>> linux), but it doesn't have support for the L3150. So, I was curious to know how is the
>>>>> workflow to
>>>>> add new printer driver support? The driver that I run to print is the generic ESC/P-R, and I noted
>>>>> that the printers with gunterprint drivers have native "full feature" linux driver. What that
>>>>> means?
>>>>> There is something that I and others non-experienced programmers can do for help gutenprint to
>>>>> increase printers support?
>>>> Gutenprint supports Epson printers using ESCP2, but most ESCPR printers also support ESCP2.  It's
>>>> quite possible that the Stylus C82 driver will work with this printer; if it doesn't, there are
>>>> other drivers that may.
>>>>
>>>> Support for head alignment is a different matter.  It's possible that escputil will work
>>>> (specifying
>>>> the C82), but a lot of newer printers either don't support head alignment or use a different
>>>> mechanism than older ones.
>>> Looks great! I will try this driver you say and see if it works on L3150.
>>>
>>> So, If a driver for one printer work well for another, is there any way to implement it as supported
>>> by gutenpint, isn't? Is there anything that I could do to help with the project, like testing and
>>> reporting, etc?
>>>
>>> Thanks for reply!
>> If it works, please test it at all resolutions (you don't need to make big prints) and any paper
>> types you have handy.  I don't recall whether the C82 supports borderless printing; if it does,
>> please test that (otherwise I'll look to see if another existing driver might work that you can
>> test).
>>
>> If it works, I just have to add one line to an XML file and update the release notes.
>>
>> https://lists.sourceforge.net/lists/listinfo/gimp-print-devel
> I tried the C82 driver and it works! I was able to print in every resolution, but I noticed that the
> resolution 5760x1440 DPI wasn't available, so I tested only up to 2880x1440. I didn't tested all
> resolutions. I tested only 360, 720, 1440 and 2880x1440 DPI resolutions, but I suppose that others
> works great too.  I tested prints on grayscale, CYM and CYMK color modes; also tested with standard
> and best quality options.
> 
> About borderless print, I didn't found this option for the driver used, but I tried to print a image
> with "EPSON 4x6 Photo Paper (tear-off borders)", besides setted image size as paper size and marked
> "Ignore Page Margins" on Image Settings, but it didn't work, just printed the image with borders,
> reducing image size. Should there be some specific option relative to borderless print?
> 
> Since this driver works for my printer, is it safe to do head alignment in it?

Please try the WorkForce 1100 driver, in that case.

Someone else has asked for assistance with the L3100; they're probably essentially the same printer.

Re: [Gimp-print-devel] How is the workflow for newer printers support?

[Carlos <gc...@di...>]

On 5/23/21 11:38 AM, Robert Krawitz wrote:
> On 5/23/21 2:03 AM, Carlos via Gimp-print-devel wrote:
>> On 22/05/2021 20:39, Robert Krawitz wrote:
>>> On 5/21/21 9:57 PM, Carlos via Gimp-print-devel wrote:
>>>> Hi, I have a EPSON L3150 printer and installed gutenprint because I wanted to align heads (on
>>>> linux), but it doesn't have support for the L3150. So, I was curious to know how is the workflow to
>>>> add new printer driver support? The driver that I run to print is the generic ESC/P-R, and I noted
>>>> that the printers with gunterprint drivers have native "full feature" linux driver. What that means?
>>>> There is something that I and others non-experienced programmers can do for help gutenprint to
>>>> increase printers support?
>>> Gutenprint supports Epson printers using ESCP2, but most ESCPR printers also support ESCP2.  It's
>>> quite possible that the Stylus C82 driver will work with this printer; if it doesn't, there are
>>> other drivers that may.
>>>
>>> Support for head alignment is a different matter.  It's possible that escputil will work (specifying
>>> the C82), but a lot of newer printers either don't support head alignment or use a different
>>> mechanism than older ones.
>> Looks great! I will try this driver you say and see if it works on L3150.
>>
>> So, If a driver for one printer work well for another, is there any way to implement it as supported
>> by gutenpint, isn't? Is there anything that I could do to help with the project, like testing and
>> reporting, etc?
>>
>> Thanks for reply!
> If it works, please test it at all resolutions (you don't need to make big prints) and any paper
> types you have handy.  I don't recall whether the C82 supports borderless printing; if it does,
> please test that (otherwise I'll look to see if another existing driver might work that you can test).
>
> If it works, I just have to add one line to an XML file and update the release notes.
>
>
> _______________________________________________
> Gimp-print-devel mailing list
> Gim...@li...
> https://lists.sourceforge.net/lists/listinfo/gimp-print-devel
I tried the C82 driver and it works! I was able to print in every 
resolution, but I noticed that the resolution 5760x1440 DPI wasn't 
available, so I tested only up to 2880x1440. I didn't tested all 
resolutions. I tested only 360, 720, 1440 and 2880x1440 DPI resolutions, 
but I suppose that others works great too.  I tested prints on 
grayscale, CYM and CYMK color modes; also tested with standard and best 
quality options.

About borderless print, I didn't found this option for the driver used, 
but I tried to print a image with "EPSON 4x6 Photo Paper (tear-off 
borders)", besides setted image size as paper size and marked "Ignore 
Page Margins" on Image Settings, but it didn't work, just printed the 
image with borders, reducing image size. Should there be some specific 
option relative to borderless print?

Since this driver works for my printer, is it safe to do head alignment 
in it?

Re: [Gimp-print-devel] Help! URGENT

[Matt <wal...@ma...>]

<html><head></head><body dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div class=""><br class=""><blockquote type="cite" class=""><div class="">On May 22, 2021, at 8:38 AM, Andrew Josephs via Gimp-print-devel &lt;<a href="mailto:gim...@li..." class="">gim...@li...</a>&gt; wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Hi.<br class="">I’m trying to install a canon ip6310D on a 2020 Mac mini running the latest Big Sur OS.<br class=""><br class="">I downloaded gutenprint but don’t see any path forward.<br class=""><br class="">Thank you! <br class=""><br class="">Regards,<br class="">Andrew Josephs</div></div></blockquote><br class=""></div><div class="">Andrew, there are a number of variables that we need to look at.</div><div class=""><br class=""></div><div class="">1. &nbsp;Were you able to install the drivers from the download?</div><div class=""><br class=""></div><div class="">2. &nbsp;Were you able to install your printer from the Printers and Scanners System Preferences?</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">The 2020 Mac mini uses Apple's new M1 chip set rather than the Intel processer</div><div class="">1. Do you know if you have installed Rosetta 2? &nbsp;That is the translator the Apple uses &nbsp;to run Intel code on the new computers. &nbsp;Without having that installed, Gutenprint will not run.</div><div class=""><br class=""></div><div class="">2. &nbsp;If you didn't install Rosetta or are unsure, you can install it manually.</div><div class="">&nbsp; &nbsp;a. &nbsp;Open the Terminal.app &nbsp;(/Applications/Utilities/Terminal.app )</div><div class="">&nbsp; &nbsp;b. &nbsp;Make sure you are running as an administrator. &nbsp;The first user account set up after you started using the new computer will be an administrator account. &nbsp;Now copy the following into the Terminal window:</div><div class=""><br class=""></div><div class="">sudo&nbsp;<span style="font-family: inherit; font-style: inherit; font-variant-caps: inherit; white-space: inherit; color: var(--highlight-color);" class="">/usr/sbin/softwareupdate --install-rosetta</span></div><div class=""><br class=""></div><div class="">Then just follow the prompts. &nbsp;You will need to agree to a user agreement.</div><div class=""><br class=""></div><div class="">I think the answer to your problem is in one of the steps above. &nbsp;Please let us know if you need further assistance. &nbsp;Please be as specific a possible with &nbsp;any error message, etc</div><div class=""><br class=""></div><div class="">Matt</div><div class=""><br class=""></div><div class=""><br class=""></div></div></div></body></html>

Re: [Gimp-print-devel] Help! URGENT

[<wal...@ma...>]

Quoting Andrew Josephs via Gimp-print-devel  
<gim...@li...>:

> Hi.
> I’m trying to install a canon ip6310D on a 2020 Mac mini running the  
> latest Big Sur OS.
>
> I downloaded gutenprint but don’t see any path forward.
>
> Thank you!
>
> Regards,
> Andrew Josephs

Andrew, there are a number of variables that we need to look at.

1.  Were you able to install the drivers from the download?

2.  Were you able to install your printer from the Printers and  
Scanners System Preferences?


The 2020 Mac mini uses Apple's new M1 chip set rather than the Intel processer
1. Do you know if you have installed Rosetta 2?  That is the  
translator the Apple uses  to run Intel code on the new computers.   
Without having that installed, Gutenprint will not run.

2.  If you didn't install Rosetta or are unsure, you can install it manually.
    a.  Open the Terminal.app  (/Applications/Utilities/Terminal.app )
    b.  Make sure you are running as an administrator.  The first user  
account set up after you started using the new computer will be an  
administrator account.  Now copy the following into the Terminal window:

sudo /usr/sbin/softwareupdate --install-rosetta

Then just follow the prompts.  You will need to agree to a user agreement.

I think the answer to your problem is in one of the steps above.   
Please let us know if you need further assistance.  Please be as  
specific a possible with  any error message, etc

Matt

Re: [Gimp-print-devel] How is the workflow for newer printers support?

[Robert K. <rl...@al...>]

On 5/23/21 2:03 AM, Carlos via Gimp-print-devel wrote:
> On 22/05/2021 20:39, Robert Krawitz wrote:
>> On 5/21/21 9:57 PM, Carlos via Gimp-print-devel wrote:
>>> Hi, I have a EPSON L3150 printer and installed gutenprint because I wanted to align heads (on
>>> linux), but it doesn't have support for the L3150. So, I was curious to know how is the workflow to
>>> add new printer driver support? The driver that I run to print is the generic ESC/P-R, and I noted
>>> that the printers with gunterprint drivers have native "full feature" linux driver. What that means?
>>> There is something that I and others non-experienced programmers can do for help gutenprint to
>>> increase printers support?
>> Gutenprint supports Epson printers using ESCP2, but most ESCPR printers also support ESCP2.  It's
>> quite possible that the Stylus C82 driver will work with this printer; if it doesn't, there are
>> other drivers that may.
>>
>> Support for head alignment is a different matter.  It's possible that escputil will work (specifying
>> the C82), but a lot of newer printers either don't support head alignment or use a different
>> mechanism than older ones.
> 
> Looks great! I will try this driver you say and see if it works on L3150.
> 
> So, If a driver for one printer work well for another, is there any way to implement it as supported
> by gutenpint, isn't? Is there anything that I could do to help with the project, like testing and
> reporting, etc?
> 
> Thanks for reply!

If it works, please test it at all resolutions (you don't need to make big prints) and any paper
types you have handy.  I don't recall whether the C82 supports borderless printing; if it does,
please test that (otherwise I'll look to see if another existing driver might work that you can test).

If it works, I just have to add one line to an XML file and update the release notes.

Re: [Gimp-print-devel] How is the workflow for newer printers support?

[Carlos <gc...@di...>]

On 22/05/2021 20:39, Robert Krawitz wrote:
> On 5/21/21 9:57 PM, Carlos via Gimp-print-devel wrote:
>> Hi, I have a EPSON L3150 printer and installed gutenprint because I wanted to align heads (on
>> linux), but it doesn't have support for the L3150. So, I was curious to know how is the workflow to
>> add new printer driver support? The driver that I run to print is the generic ESC/P-R, and I noted
>> that the printers with gunterprint drivers have native "full feature" linux driver. What that means?
>> There is something that I and others non-experienced programmers can do for help gutenprint to
>> increase printers support?
> Gutenprint supports Epson printers using ESCP2, but most ESCPR printers also support ESCP2.  It's
> quite possible that the Stylus C82 driver will work with this printer; if it doesn't, there are
> other drivers that may.
>
> Support for head alignment is a different matter.  It's possible that escputil will work (specifying
> the C82), but a lot of newer printers either don't support head alignment or use a different
> mechanism than older ones.
>
>
> _______________________________________________
> Gimp-print-devel mailing list
> Gim...@li...
> https://lists.sourceforge.net/lists/listinfo/gimp-print-devel

Looks great! I will try this driver you say and see if it works on L3150.

So, If a driver for one printer work well for another, is there any way 
to implement it as supported by gutenpint, isn't? Is there anything that 
I could do to help with the project, like testing and reporting, etc?

Thanks for reply!

Re: [Gimp-print-devel] How is the workflow for newer printers support?

[Robert K. <rl...@al...>]

On 5/21/21 9:57 PM, Carlos via Gimp-print-devel wrote:
> Hi, I have a EPSON L3150 printer and installed gutenprint because I wanted to align heads (on
> linux), but it doesn't have support for the L3150. So, I was curious to know how is the workflow to
> add new printer driver support? The driver that I run to print is the generic ESC/P-R, and I noted
> that the printers with gunterprint drivers have native "full feature" linux driver. What that means?
> There is something that I and others non-experienced programmers can do for help gutenprint to
> increase printers support?

Gutenprint supports Epson printers using ESCP2, but most ESCPR printers also support ESCP2.  It's
quite possible that the Stylus C82 driver will work with this printer; if it doesn't, there are
other drivers that may.

Support for head alignment is a different matter.  It's possible that escputil will work (specifying
the C82), but a lot of newer printers either don't support head alignment or use a different
mechanism than older ones.

[Gimp-print-devel] Help! URGENT

[Andrew J. <aj...@ya...>]

Hi.
I’m trying to install a canon ip6310D on a 2020 Mac mini running the latest Big Sur OS.

I downloaded gutenprint but don’t see any path forward.

Thank you! 

Regards,
Andrew Josephs

[Gimp-print-devel] How is the workflow for newer printers support?

[Carlos <gc...@di...>]

Hi, I have a EPSON L3150 printer and installed gutenprint because I 
wanted to align heads (on linux), but it doesn't have support for the 
L3150. So, I was curious to know how is the workflow to add new printer 
driver support? The driver that I run to print is the generic ESC/P-R, 
and I noted that the printers with gunterprint drivers have native "full 
feature" linux driver. What that means? There is something that I and 
others non-experienced programmers can do for help gutenprint to 
increase printers support?

Thanks you in advance!
Att. Carlos

[Gimp-print-devel] Canon GM4050

[Romain B. <rom...@ya...>]

Hi team Gutenprint,
I just bought an absolutely great printer, the Canon GM4050. But like often with Canon, the drivers offering is a nightmare. and incompatible with Mac Computers (I didn't even know this even still a thing).
I was thinking about using a small Ubuntu as a CUPS server but sadly I just found out the GM4050 is not part of GutenPrint.
Do you guys think there's a chance of adding it to the list?
Thanks,
Romi

[Gimp-print-devel] Driver for Canon Maxify GX 6020

[Welches 3 <wel...@ho...>]

I'm using Fedora 33 and just purchased a Canon Maxify GX6020.  I should have looked at your support first.  Would one of the other Maxifys drivers work, or will you be supporting this one soon?
Thanks,
Dave

[Gimp-print-devel] Dimension options

[Robert K. <rl...@al...>]

Just to bring everyone up to speed on what's going on, many versions of OS X choke on custom values
for dimension-valued settings for items other than media size.  However, units of full points turn
out to be a bit too coarse for CD printing, particularly for the hub.  It's possible to have a worst
case error of 1/100"(*), which if you're trying to print to the very edge of the hub, has proven to
be visible.

Matt, Steve, and I have looked at various solutions.  Broadly speaking they are:

1) Punt altogether: we know that that's dissatisfying to some people.

2) Accept that OS X won't print with printers that support CDs.  Nope.

3) Treat dimensions as floats, with the fine adjustment.  That proves to be somewhat complex to
handle with cups-genppdupdate.

4) Use a finer adjustment than a full point.  This increases the number of choices, but lets us
reduce the worst error.

My proposal is #4, using units of 0.5 point.  This reduces the worst case error to 1/200", which I
suspect (read: hope) will prove sufficient.  This can be made compatible in the PPD files by
printing the tags as integers for full integer point values, and as 1_0 for 1.0 (replacing the .,
which is not a valid character in PPD tags, with _).  Patch is attached.  I've tested the PPD files
for conformance, and one printer that uses CDs and one that doesn't.

* 1/100" worst case error is calculated as follows: with precision of 1/72", the worst case error in
the X and Y dimensions is 1/144" (the hub being exactly halfway between point boundaries).  If
you're unlucky and both dimensions are off, the error works out to just under 1/100" by the
Pythagorean theorem.

Re: [Gimp-print-devel] Mac OS X issue

[Steve L. <sle...@ya...>]

On the contrary. I can build just fine. My only issue has been automating the process. And that only because I haven’t had the impetus to do it. 

Steve Letter
Sent from my Symbolics Lisp Machine using zmail. 

> On May 9, 2021, at 12:46 PM, Matt Broughton <wal...@ma...> wrote:
> 
> 
>> On May 8, 2021, at 4:52 PM, Solomon Peachy <pi...@sh...> wrote:
>> 
>>> On Sat, May 08, 2021 at 05:05:41PM -0400, Robert Krawitz wrote:
>>> I'm sort of leaning toward simply changing the base unit for the PPD 
>>> files to 0.5 point.  That will still make for a lot of option choices 
>>> and we'll need to test to make sure that that doesn't cause additional 
>>> problems.  What do people think?
>> 
>> I think this is the least worst option..
>> 
>> (And I say that as someone whose use cases aren't affected one way or 
>> another)
>> 
>> - Solomon
> 
> I think I agree with Solomon here.  I do have some other thoughts/concerns,
> 1.  Is changing the base unit going to cause problems with cupstestppd ?
> 
> 2.  We have had the messiness of 'mm' 'points' and 'inches' for quite some time.  We saw how ugly it is when this macos bug emerged.  The  bug first appeared with v3.x.  Robert, I know you *really* don't like making big changes even if it the right thing to do.
> 
> 2a  What problems might this cause with cups-genppdupdate?  There are going to be users that already have modified their PPD defaults through the CUPS web interface or command line.  Also, at least in macos, users can create Custom Presets either for one printer or for all printers in the standard Print Window.  I think this is going to get very messy and problematic very, very quickly.  I may not be thinking correctly on these point or overanalyzing.
> 
> While the current bug in macos only affects those printers that print on CDs/DVDs, it is still a nasty bug. My immediate concern is to get something out for macos users that won't crash applications when they try to look at and set Printer Features.  I think Steve is having problems getting the ARM binaries to work and to make a fat binary. He will have to let us know where he is.  At this point, I would settle for a x86_64 only release.  I is easier to fend off complaints of not not having native code for the M1 chipset than deal with drivers that can crash applications. As I recall the last patch Robert has us try solved the problem.
> 
> Matt
> 
> 
> 
> _______________________________________________
> Gimp-print-devel mailing list
> Gim...@li...
> https://lists.sourceforge.net/lists/listinfo/gimp-print-devel