Photocopying – Contact printing – Light boxes
Patent
1994-05-24
1996-02-06
Royer, William J.
Photocopying
Contact printing
Light boxes
355206, 355209, 355260, G03G 2100
Patent
active
054899710
ABSTRACT:
An improved method and apparatus for monitoring the amount of use sustained by a replaceable part within an electrophotographic printing apparatus is disclosed. In response to a print command, a controller reads data from a permanent memory within the replaceable part. The data, which indicates how much use the replaceable part has sustained, is then stored in a buffer within the controller. The data is then incremented by one for each page printed by the printing apparatus. Once the data equals or exceeds a predetermined use value indicative of the operational lifetime of the replaceable part, a user is informed of this condition through a replacement message.
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Bushnell Robert E.
Royer William J.
Samsung Electronics Co,. Ltd.
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