How to determine that the laser printer cartridge has worked out its resource?

Question

Printers

Hello.
How do you know when it's time to dispose of a laser printer cartridge? Or replace a part?
Thanks)))

Answer 1

If it doesn't print well, then it's time.
There are light stripes on the sheet (or black ones), dull printing, crooked letters, there are really 3-4 dozen such defects.