Electrophotography – Diagnostics – Fixing
Patent
1997-04-11
1998-05-19
Grimley, Arthur T.
Electrophotography
Diagnostics
Fixing
219216, 219494, 399 69, G03G 1520
Patent
active
057549176
ABSTRACT:
A customer-replaceable module having a fusing subsystem therein for a electrophotographic printer or copier includes three separate devices for detecting potentially dangerous temperature conditions within the module. A first thermal cutoff spaced from the fuser roll can detect high temperatures caused by incorrect software operation and hardware failures. A second thermal cutoff contacting the fuser roll outside of the paper path can detect failures associated with software malfunctions and paper shielding the first thermal cutoff. A thermistor contacting the fuser roll in the paper path can interface with the control software of the printer or copier itself. The thermal cutoffs function entirely independently of the control software of the printer or copier. The module may further include an electronically-readable memory for recording failure conditions.
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Fromm Paul M.
Hanzlik Edward C.
Kulbida Ihor
Smoak James F.
Chen Sophia S.
Grimley Arthur T.
Hutter R.
Xerox Corporation
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