KM73 Photopolymer Curves

[mlevy]

Hello

Where I can find a starting curve for printing with Piezo Pro inks ,Pictorico Ultra Film and KM73 photopolymer plates?

Thank you

Moises

[PiezographySupport]

You can make one using PPE2 and the hahnemuhle Photo rag PiezoPro curve. You’ll just want to print 256 steps, print as per normal, and then limit this new curve by setting the “starting point” to the the highest dMax step (so let’s say it’s 31 steps from step 1 in the shadows, you would set the shadow start point to 31). Then you linearize (normal workflow).

There are no official starting curves for gravure/film. We offer direct to plate starting curves for DTP workshop attendees at Cone Editions Press.

See this thread too:

Epson 1430 Postivies for copperplate photogravure

Hi Walker, Thanks for your follow-up. I am excited to integrate the Piezography inks into my alt workflow, especially the photogravure side of the equation. As you are aware true photogravure (resist on copper) is a fairly “organic” process in respect to all the many variables including environmental conditions. Those variables include: Carbon tissue sensitization Creation of positive Exposure of positive to carbon tissue/resist Proper resist lay down on the plate Resist drying and humidifica…

best regards,
Walker

[mlevy]

Thank you Walker I will start my calibration from this point !

Best

Moises

[mlevy]

Hello Walker, how should I calculate the limit density using the 256 steps target (for gravure)? or should I use the Limiter.tif file?

Thank you!

Moises Levy

[mlevy]

Walker should I limit the density on the “shadow start point” or should I put the values of the curve on the “New Curve Output Contrast tweaking”?

Thank you

Moises Levy

[PiezographySupport]

as I said above, limit with the shadow start point.

best,
Walker

[mlevy]

Thank you I’ll start my Photopolymer calibration, I already made my first Palladium prints with very good results.

Best

Moises