Calculating percentage of C, M, Y & K in an image

  Gary 09:38 09 Jul 04
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I'm trying to produce some reasonably accurate running costs to compare my current Inkjet printer with a colour laser I'm considering. I have cartridge page-life figures which are at 5% coverage, and need a way to translate the pages I'm going to be printing into % coverage of each of C, M, Y & K. Can anyone tell me if there's a way to do this, e.g. using Photoshop or similar?

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