i own a risograph, very old, very analog. I can print five spot colors (red, blue, yellow, green and brown) and black. But its not connected to a computer. Instead I have to print each color separated, one at a time by feeding my scanning unit with greyscaled originals. So heres what i want to do:
I want to separate the colors of an image into multichannel with GCR, each channel representing my spot colors, so feed the RISO. I can look up the Pantone or RGB codes of my riso colors, but i cant use them, because the option multichannel is greyed out in the "Convert to profile" dialogue. I can just use CMYK > Own CMYK > Custom colors and change them. (Screenshot) So i end up with four colors.
What do i do wrong? Or ist this even thought wrong?
Do you mean there is no option to "make" an own 6-C-profile in photoshop? Or that it does not make any sense to do it without spectrometer and other software?
I know that ICC profiles for "real" color management is cost expensive. And i dont hope to get a perfect and stable printing process matching all colors. I just want to understand what it does and see what i can do.
I know DuploPress and Colorlibrary. Explorisos webshop for profiles does not work and he did not reply. And colorlibrary does not offer a profile for those colors. I dont have pink for false cmyk. So i thought i could set up a multichannel and try some settings to fit the colors and machine i use.
I will upload a scan and an original when i have it. If it had been successfull, maybe i would not write this