Re: How is the workflow for newer printers support?

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.
>
>
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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?


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