Toner is often not empty!

Sure it's good to buy the Originaltonel of HP, but often is still not nearly as empty as the printer suggests a.
My Color Laserjet CM1312 MFP has recently refused an expression of the next even create to another color expression because all color toner allegedly were empty. This, despite the pressure before that all the colors were very good.
That's been the case before even with the black color that I auswechselte it.
The printer can be directly under
Setup Menu -> System Setup -> Replace supplies. -> Empty pass -> ok
move the printer without problems to continue printing. Suddenly it went without problems even with my "old" toner. The toners are far from empty and so can save a lot of money!