Having safely used toner cartridges compatible with other laser printers in the past, I started to buy a lot of two cheap on Amazon for my HP LaserJet P1102 when that came with the printer, half filled Only, has exhausted itself - pale and uneven printing. So in an office supply store I bought a compatible 35 and the result was not much better. Then I found the original product to about 55 on Amazon - controlled one day arrived the next day and perfect results right away. Finally, I could have bought the real toner for the same price that unnecessary compatible so next time I will not make the same mistake!