gpr 6 toner not opening! Seems to be the cartridge although is CANON for sure.

[Simons]

Having some bad luck with cartridges not opening. I seen this rare at a dealer and I guess I bought a bad batch or something. They dont want to open for the customer. I have to wrestel with it pry , pull real hard before getting them open.

I have never seen a dev unit fail like this so I just had to ask! Anything you have seen like this?

[nmfaxman]

I have seen some of these come with the seal having air pressure inside.
They are packed @ sea level.
Try poking the seal with a pin and they should open easier