Digital BW, The Print

Thomas Fors wrote:
> On Wed, 21 Apr 2004, brianmaytum wrote:
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>>BTW, I don't know it is not possible to control the glosser 
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>>separately, I simply haven't had time to pursue it on the one R800 I 
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>>have access to.
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>>Brian Maytum
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>>Epson Rep.
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> Taking a look at the programming manual from the epsondevelopers.com web site, it looks as if the gloss is controlled the same as any other ink at the driver level.  This means it is technically feasible to control the gloss independantly.  
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> I don't know if the Epson driver will allow you to do this (I doubt it).  I suspect you'll see it first in third party drivers and RIPs.  It should be fairly straightforward for gimp-print and (consequently) Roy Harrington's QuadToneRIP to support it.
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> I don't know how you'd control it though.  Maybe send two files through the driver/RIP?  the normal RGB or Grayscale file and a second "Gloss Mask" file?

It could be done with an alpha channel. Postscript as the file 
format is also an option. There are RIPs that already get an 
extra vector line image in the Postscript file to cut out the 
sticker circumferences in vinyl. Roland inkjets for example. Some 
RIPs can use spot color inks in one of the carts (Mimaki inkjets 
mostly), the color is selected then.

Ernst