Re: [Gimp-print-devel] Print plugin 3.0.6 bug report

[Stefan K. B. <sf...@co...>]

Robert L Krawitz wrote:
> 
>    Date: Sun, 20 Feb 2000 19:22:36 +0100
>    From: "Stefan K. Berg" <sf...@co...>
>    CC: gim...@li...
> 
>    Robert L Krawitz wrote:
> 
>    > Could you try a couple of other things?
>    >
>    > 1) Try changing MODEL_MAKE_NOZZLES(64) to MODEL_MAKE_NOZZLES(24).
>    >
>    > 2) At line 2447, the following appears:
>    >
>    >               fprintf(prn, "\033.%c%c%c%c", 1, 8 * 5, 5,
>    >
>    > Please change the "8 * 5" to "5" (not in quotes, of course).
>    >
>    > 3) At line 2407, the following appears:
>    >
>    >       if (escp2_has_cap(model, MODEL_1440DPI_MASK, MODEL_1440DPI_YES))
>    >
>    > Please change it to
>    >
>    >       if (escp2_has_cap(model, MODEL_1440DPI_MASK, MODEL_1440DPI_YES) &&
>    >           ydpi > 720)
>    >
>    > Let me know if anything changes in softweave mode.
> 
>    Yes indeed, this time I get output of about the right size but it
>    looks very garbled. I've scanned the output of 720 DPI Softweave
>    mode, which you will find at
>    http://home.swipnet.se/consultron/scan1.gif (96 kB). The black ink
>    has bled through my inkjet paper. Also, the printer made some
>    strange noises when printing this - a quiet but noticable
>    "whooshing" sound from time to time.
> 
> 1) Could you try to identify which of the three changes made it work
>    (try them one at a time)?  That would be extremely helpful.

The second one, the fprintf. The third one doesn't seem to change anything.
 
> 2) It's apparent that the inter-row spacing (which is set to 8) is
>    incorrect.  My suspicion is that the proper value should be 6, and
>    that MODEL_MAKE_NOZZLES(48) is correct here.  This can be tested by
>    changing MODEL_MAKE_SEPARATION(8) to MODEL_MAKE_SEPARATION(6).
>    It's not impossible that the right value is 12 or even 16, though.

I tried a number of variations, but so far the best one was 32 nozzles and
a separation of one. That gave me white horizontal stripes, but otherwise an
OK picture. I have done several tests and scanned them into

http://home.swipnet.se/consultron/scan2.jpg (188 kB)

for your reference. The X/Y syntax is of course referring to no of nozzles
and the separation.

Happily waiting for the opportunity to use some more ink! :)