Trying to generate linearisation profiles with QTR: results are worse

pharmacist

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Not sure what I did wrong last time, but probably printing the target was printed using the wrong setting: I now choose the setting: let printer manage color and in the printer driver I choose: ABW > dark. After drying the target I scanned the target and export the data in CIELAB format txt and dropped the data first on QTR-Linearize-Data.exe to linearize the data and afterwards the generated *out.txt file is dropped on QTR-Create-ICC.exe to generate the BW profile.

First in PS: convert to profile (relative colorimetric, BPC: on) and afterwards assign profile (Gray 2.2). I print with the same setting as the original target is printed: ABW > dark.

I now get better result with deeper blacks and contrast in the shadows than the normal ABW-mode without the linearisation profile. Previously the blacks/dark shadows were crushed.

Not sure but I think the previous time I choosed: color managemnt = OFF and this time I choose: color management = let printer manage color.
 

roncromberge

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Hallo Apotheker,

Weer een poosje geleden. ( back to English)

After many serious troubles with my P900 many headstrikes and paper load and travel issues.
I have decided to get a divorce 😢

So I’m now in joyful expectation of my new bought of the much bigger and sturdier brother the P5300.

And now I come back to your topic. 😊 our well known Keith Cooper. Has made many many YouTube videos about the 5300. (Which have the same ink and head as the P900.) And he have al this information put together in a huge written review (understatement). In the section B&W printing. He stated printing bw with color profiles is the wrong way to go! I know you use other ink. Thus ABW is probably a hard way to go. I also know you have tried qtr. very good product. If you have a degree in color science.

But also in this review he show ‘again’ the workflow on how to linear the ink output. Perhaps again time to look at this article.

Or try out the full qtr system. Then you can select only the true black and grays. And cancel out the color inks. It is a pain in the … to master it. But when you know how to make the ‘qtr’ profiles. Your b&w prints will be superb. And then when you want some color tone in it you can add the right color in the profile and adjust accordingly.

👋🏻 Ron.
 

pharmacist

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The P5300 would be too large on my desk, but anyhow gefeliciteerd met je nieuwe printer :thumbsup
 

roncromberge

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The P5300 would be too large on my desk, but anyhow gefeliciteerd met je nieuwe printer :thumbsup
YES. I had to buy a new (ikea) Bror roltafel. Moved my already big also ikea desk about 20cm to make space for th monster.
And it is a very loud printer. But all of these I was used to with my Canon IPF 5100. 😜
 
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