Service life indicator for a process cartridge

Details Service life indicator for a process cartridge Service life indicator for a process cartridge

1983-09-19

1988-09-13

Prescott, A. C.

Photocopying

Including fiber optics

355 3DR, 355 3DD, 355 14R, 355 14D, 355 14CU, G03G 1500

Patent

active

047713135

ABSTRACT:
A service life indicator for an image forming process cartridge which contains a consumable used for image formation and is detachably mountable into a main assembly for the image formation, comprises a switching device, adapted to be provided in the process cartridge, actuatable in response to consumption of the consumable, and a warning device, responsive to the switching device, for warning an operator of when the service life of the process cartridge has been consumed.

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