QTR-Quadtone RIP

Dear Ernst
Thank you for your reply.  So far your understanding of my photoceramic quest gets closer to the problem. I compare the final fired result with a good glossy paper print and make my judgments here.  I only wish I could better compound an my digital fluid with dependable results.  I have no lab rheologology
measuring equipment and only use trial and error to get where I am with this project. Ink additives seem almost infinite but when I get a good fritted image the digital fluids are very viscous and clog the printer nozzles.  Your suggestion on using duotones, tritones and quadtones seems a very good path to follow as I have no one who will mentor me in the QTR curve creation procedure as yet. Photoshop manuals have duotones, tritones and quadtone procedures well documented.  I note you are in the Netherlands-Holland here in the USA.  Thank you for your interest and replying with the suggestion of persuing Duotone, tritone, and quadtone printing.---- Original Message ----- 
  From: Ernst Dinkla 
  To: QuadtoneRIP@yahoogroups.com 
  Sent: Thursday, March 27, 2008 4:54 AM
  Subject: Re: [QuadtoneRIP] Re: QTR Help for photoceramic curve?



  The density of the ink can really not be controlled by 
  reducing the ceramic particles (fritte as we call it here I 
  guess) amount to the ink medium ? Is the rheology of the 
  ink already at the edge of not usable ? If dotgain in the 
  total process is hard to handle then a duotone, tritone or 
  quad inkset should make it easier to keep the tonal range in 
  control but only when the ink itself isn't more compromised 
  by the changed pigment ratio. No ink additives possible to 
  deal with that issue ?

  Do you measure the densities in the final product, a 
  greyscale step target on a baked tile ? Measuring on the 
  printed transfer sheet is likely not delivering an accurate 
  base to make curves on.

  -- 
  Met vriendelijke groeten, Ernst

  | Dinkla Grafische Techniek |
  | www.pigment-print.com |
  | ( unvollendet ) |


   


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