Replacement part with integral memory for usage and calibration

Details Replacement part with integral memory for usage and calibration Replacement part with integral memory for usage and calibration

1994-12-22

1996-02-13

Smith, Mathew S.

Photocopying

Contact printing

Light boxes

355203, 355208, 355210, 355246, 355260, 355284, G03G 1500

Patent

active

054915406

ABSTRACT:
A printer/copier apparatus is adapted to receive replacement parts that are subject to wear or which comprise a consumable that is employed during the printing/copying operation. The apparatus includes a first connector that is coupled to a processor which controls operation of the apparatus. A replaceable part includes a second connector which mates with the first connector. The replaceable part includes a serial access memory that is connected to the second connector by only a single wire. Data transfers are enabled both from and to the serial access memory to allow storage of data that is indicative of usage, calibration, or other data relating to the replaceable part. Usage of the single wire memory enables direct substitution of the serial access memory in place of a presently provided fuse, without requiring changes to the physical interface between the replaceable part and the connectors which enable mating of the replaceable part with the apparatus.

REFERENCES:
patent: 4961088 (1990-10-01), Gilliland et al.
patent: 5016171 (1991-05-01), Connolly et al.
patent: 5049898 (1991-09-01), Arthur et al.
patent: 5066978 (1991-11-01), Watarai et al.
patent: 5206685 (1993-04-01), Hara et al.
patent: 5218407 (1993-06-01), Matsushita et al.
patent: 5272503 (1993-12-01), LeSueur et al.
patent: 5283613 (1994-02-01), Midgley, Sr.
patent: 5365312 (1994-11-01), Hillmann et al.
patent: 5452059 (1995-09-01), Sekiya

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