Image forming apparatus having a jam counter adapted to be disab

Details Image forming apparatus having a jam counter adapted to be disab Image forming apparatus having a jam counter adapted to be disab

1988-07-26

1991-04-30

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355204, 355316, G03G 2100

Patent

active

050122819

ABSTRACT:
An image forming apparatus including a sheet supply assembly capable of successively supplying sheet media, an image producing stage for producing an image on each of the sheet media supplied from a sheet supply, a sheet discharge roller for discharging from the image producing stage each of the sheet media each having an image produced thereon, sensors for detecting an occurrence of jamming of a sheet medium between the sheet supply and discharge assemblies, a jam counter operative to count the number of occurrences of jamming of the sheet medium, the jam counter being activated each time an occurrence of jamming is detected by any of the sensors, and a control circuit for monitoring the operational conditions of the image producing stage responsive to a sheet medium supplied from the sheet supply assembly after an occurrence of jamming of a sheet medium has been detected by any of the sensors, and disabling the jam counter depending on the monitored operational conditions of the image producing stage.

REFERENCES:
patent: 4062061 (1977-12-01), Batchelor et al.
patent: 4133477 (1979-01-01), Marino et al.
patent: 4243313 (1981-01-01), Masuda et al.
patent: 4260904 (1981-04-01), Horie et al.
patent: 4511241 (1985-04-01), Tsudaka et al.
patent: 4668075 (1987-05-01), Shigemura et al.

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