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Conf: (P-PDF) Developers, Msg: 67724
Date: 6/27/2002 07:08 PM
I think that's fair. R=G=B is often seen. You would need to check every image pixel and every sc/rg/SC/RG colour.
All colour spaces can potentially represent a colour that prints in grey. Sometimes the results are device dependent, e.g. CalGray colours may print with a slight colour tint. CMYK values with 0-0-0-anything are clearly grey, but what about c=m=y values, which some software considers as grey but in fact has a reddish tint on many printers/presses.