Copy cartridge warranty and billing system

Details Copy cartridge warranty and billing system Copy cartridge warranty and billing system

1989-04-20

1991-05-14

Fleming, Michael R.

Boots, shoes, and leggings

355201, G06F 700, G03G 1500

Patent

active

050161717

ABSTRACT:
Customer billing system for electrostatographic reproducing machines in which a replaceable copy cartridge provides a guaranteed number of copies or prints, each cartridge having an integral copy counter which, on reaching a predetermined copy count, is disabled, rendering the cartridge dead and activating an additional copy counting mechanism for counting a limited number of grace copies that can be made using the dead cartridge, after which further operation of the machine is prevented until a new cartridge is installed.

REFERENCES:
patent: 3997873 (1976-12-01), Thorton
patent: 4500195 (1985-02-01), Hosono
patent: 4501485 (1985-02-01), Tsudaka
patent: 4531826 (1985-07-01), Stoughton et al.
patent: 4551000 (1985-11-01), Kanemitsu et al.
patent: 4585327 (1986-04-01), Suzuki
patent: 4634258 (1987-01-01), Tanaka et al.
patent: 4751484 (1988-06-01), Matsumoto et al.
patent: 4774544 (1988-09-01), Tsuchiya et al.

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