From Piezography3000 - interest to workflow users
2002-10-12 by magerabamb
The following was published on the Piezography3000 users list. Because so many users in this group use these workflows I though this should be of interest to them. Make sure to click on link. The pictures ar= e cool. Brian
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Subject: PiezoTone Original Black and Workflows An important tech bulletin has been produced that has information which will affect users of workflow procedures. It is located at http://www.inkjetmall.com/store/workflow/workflow-differences.html This page illustrates the dramatic differences in how PiezographyBW plugin and the Woolfe workflow handle the printing of a monochromatic image.We have used colored inks so that you can easily see the differences in the processes. PiezographyBW plugin is a simple quad process which uses overlapping bell shaped curves of yellow, magenta, and cyan followed by a very short black printing. The processing of tone follows from weakest dilution through strongest dilution. The Wolfe Workflow curiously enough, works in an opposite manner. The weakest dilution (or yellow position) is used under the black and the main tone is carried almost exclusively by cyan. We have just received this week, our first printed samples of prints which show rapid fading in the PiezoTone Original Black. Also, thankfully the artist submitted her workflow process which we duplicated on the files on the tech bulletin page listed above. We obviously do not use workflow procedures because we specialize in quad black workflows at Cone Editions Press. Simple Quads were first developed by Cone Editions for IRIS Graphics in the early 1990s and we have never had to use an RGB driver to produce a quad black print. We do not know if all workflow procedures follow the idiosyncrasies of the Wolfe= Workflow. But we do know without any doubt, that users of these workflow need to understand more about how their workflows may be affected by, or may affect the use of the inks they choose. PiezoTone Original Black is not a similar formula to the PiezoTone gray positions which are comprised of pure pigment without any other colorants or density agents not comprised of pigment. This is why the PiezoTone gray positions are so light resistant. PiezoTone Original Black i= s comprised of carbon pigment and metal complex. The metal complex produced a very dark black optical density which was unique to these inkset= s and which would fade at a rate to that which the original ink set produced = in the black position. On the other hand, with the workflows, this density fad= e is not supported by anything other than yellow and small amounts of cyan and magenta. MuseumBlack is made in the same way as the PiezoTone gray positions. That is, it is made of pure pigment. It should be used instead of the original black if users insist on workflows. However, the cost of the PiezographyBW plugin in so inexpensive now, that workflow users should really consider its use. We are thankful for the one single user who was considerate enough to send us printed results and workflow process. It makes all the difference in the world when users who are having problems send in specific examples of their problems to us along with associated work files. -------------------------------- may your highlights be dotless and your tonal scale smooth, Jon Cone jon@... Piezography(tm) software and inks http://www.piezography.com --------------------------------