Re: [Gimp-print-devel] Advice on how to add the Epson SL-D700

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

On 8/10/21 8:43 PM, Solomon Peachy wrote:
> On Tue, Aug 10, 2021 at 08:23:20PM -0400, Robert Krawitz wrote:
>> You might instead want to specify it in terms of the base unit (14400 on most printers)
> 
> That would be 'resolutionScale' in the model.xml file?
> 
> FWIW I went with baseSeparation units because initialVerticalOffset and 
> blackVerticalOffset were already in baseSeparation units.

That makes sense.

>> When you tune drop sizes, you don't want to tune them at anywhere near saturation, because
>> overlapping dots result in non-linear response.  I usually tune them somewhere around 25% IIRC.  For
> 
> Yeah, I'd managed to dial it back to where pure CYMK colors looked 
> pretty good but when two inks had to mix (especially Y+C=G) it was 
> actually puddling on the paper..

Yep, you're going to need to back off from there.

>> light inks, it's very important not to be saturated.  You might want 
>> to tune those at the smallest possible drop size so you have the least 
>> speckling.
> 
> Any advice on how to deliberately generate the smallest drop sizes?

Modify (temporarily) the drop sizes to only include the smallest size.

>> I wish I could say I have a more scientific procedure, but not really.
> 
> Ok, glad to hear I'm not making this unnecessary complicated for myself.

I probably should have tried to make it easier.