Image formation system having a memory device located in an elec

Details Image formation system having a memory device located in an elec Image formation system having a memory device located in an elec

1999-03-16

2000-11-07

Lee, Susan S. Y.

Electrophotography

Diagnostics

Unit or part identification

399 9, 399 24, G03G 1500

Patent

active

061448125

ABSTRACT:
A memory is provided in an electrophotographic process cartridge to be mounted on a printer, and an area in the memory is separated into a read-only area and a rewritable area. In this structure, a data error in the memory is checked. If an error in the read-only area is detected, an alarm is displayed and a print operation is prohibited. On the other hand, if an error in the rewritable area is detected, the alarm is displayed and the print operation is permitted.

REFERENCES:
patent: 4912512 (1990-03-01), Midorikawa et al.
patent: 4937626 (1990-06-01), Kohtani et al.
patent: 5101233 (1992-03-01), Ito et al.
patent: 5111243 (1992-05-01), Hatano
patent: 5708912 (1998-01-01), Lee
patent: 5835817 (1998-11-01), Bullock et al.
patent: 5907748 (1999-05-01), Kawana

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