Electrophotography – Diagnostics – Document handling
Patent
1997-07-10
1999-07-06
Beatty, Robert
Electrophotography
Diagnostics
Document handling
399 43, G03G 1500
Patent
active
059207450
ABSTRACT:
A method for managing recording sheet jams in an image-forming apparatus includes detecting a current jam in the image-forming apparatus, storing a number of image formation operations performed by the image-forming apparatus when the current jam is detected, and a first determining step for determining whether the current jam is a true jam or a false jam based on a number of image formation operations obtained for a previous jam and a number of image formation operations for the current jam.
REFERENCES:
patent: 4521102 (1985-06-01), Motomura et al.
patent: 4739366 (1988-04-01), Braswell et al.
patent: 5012281 (1991-04-01), Kusumoto et al.
patent: 5034771 (1991-07-01), Makita
Beatty Robert
Canon Kabushiki Kaisha
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