RE: [Digital BW] Quad Ink Densities -- Color Test and 21-step tes t file locations
2001-11-07 by Alessandro Pardi
Thanks, Paul. Just to see what happens I opened 21-step image in Photoshop, converted to RGB, applied the curve and I measured (with the eyedropper tool) the three zones which look cyan, magenta and yellow, and I saw that the values are RGB(0,255,255), RGB(255,0,255) and RGB(255,255,0). I must suppose that the epson driver consider these values as pure C, M and Y, and therefore outputs a single ink for each of them, am I right? Sorry if this seems obvious, but I want to double check because knowing how the driver maps RGB values to inks is the starting point for the duotone curves I'm going to write. Thanks again, Alessandro Pardi
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-----Original Message----- From: Paul Roark [mailto:paul.roark@...] Sent: martedì 6 novembre 2001 00.20 To: DigitalB&WPrint Subject: RE: [Digital BW] Quad Ink Densities -- Color Test and 21-step test file locations <snip> All the "Color Test" does is pump out 100% of each quad (not hex) ink separately. It'll be obvious which ink is which. The black ink is in the 100% spot (ignore the 90-95% blocks, they are a mix), the cyan is the second from the left, the magenta (on a quad machine) is the second from the right, and the toner on the MIS VM or lightest gray (yellow position) Piezo/FS ink is on the right. [Non-text portions of this message have been removed]