Calitoner Compatible Laser Toner Cartridge compatible with HP Q6511A (HP 11A)- Black

HP 2420D printed 26 pages fine, then says (with a perfectly printed dark black printed page) that the toner must be replaced with "genuine" toner and only 1% remains. This is obviously another built in failure by the printer manufacturer to encourage only their own toner to be used. I will simply use the far superior Brother laser printer from now on and mothball the HP. Apparently Calitoner doesn't replace the use chip on their toner.

Broken

has toner but message on printer indicates its low on toner. I'll probably purchase again.

Excellent

so far so good!