A print cartridge comes with a count of how many pages it can print. I know the industry standard is to derive that page count from "5% coverage" of a letter-sized page.
My question is, if I have four colors, how many pages is that?
I have a laser printer that takes C, Y, M, and K in separate cartridges. Each one says "8000 pages". Does that mean I have 32,000 pages at 5% coverage?
Secondly, what if I'm printing nothing but full-page photos? Obviously, the "coverage" required by a photo will VARY WIDELY; one might be almost entirely white. But is there an INDUSTRY STANDARD AVERAGE for what percent coverage is required to print a full-page photo?