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List:       gimp-print-devel
Subject:    Re: [Gimp-print-devel] HeadConfiguration question
From:       Robert Krawitz <rlk () alum ! mit ! edu>
Date:       2021-10-06 16:54:09
Message-ID: 3ba4f5c9-3401-afb4-73ad-0c9f2e1a364f () alum ! mit ! edu
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On 10/6/21 8:41 AM, Andrew X wrote:
> May be its any way to send empty data for fist N nozzles? 
> Unfortunately I don't know how gutenprint generate data for printer and asking stupid questions. 
> Gutenprint generate data for each pass of printhead with offset? In this case we, perhaps, can
> generate "no dots" for nozzles. Or we sending complete dots matrix of image and printer divide
> itself for printgead passes?

What is your use case?

> ср, 6 окт. 2021 г., 15:13 Robert Krawitz <rlk@alum.mit.edu <mailto:rlk@alum.mit.edu>>:
> 
>     On 10/6/21 4:49 AM, Andrew X wrote:
>     > Hello!
>     > Im trying to modify <headConfiguration> for SC-p800 and have some issues/
>     > When I change <Nozzles> - everything work fine/ When I setup 30 nozzles - only first 30 nozzles
>     > printing image.
>     > But when i trying to change <FirstNozzle> to 20 my print doesnt work. 
>     >
>     > As I understand it - when nozzles 30 and firstnozzle 20 - nozzles from 20 to 50 should printing
>     > image? right?
>     >
>     > And when i changing <NozzleSeparation> 5 - printer not printing too.
>     >
>     > May be i not understanding how this options should work? Is any way to force printing only with
>     > specified nozzles array from 20 to 50 for example? not only from first nozzle?
> 
>     These aren't really options; they're descriptions of the printer (firmware + hardware).  The
>     firmware expects a certain number of rows, starting from a specified row (usually, but not always,
>     the first).  We could in principle send dummy data for the first N rows, but I don't recall that we
>     have a way to do that.  Skipping rows would be much harder.  NozzleSeparation really is the
>     specification of the distance between nozzles; it's very unlikely that that would ever work on any
>     printer.



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