Image forming apparatus having a detector for a mounting unit

Details Image forming apparatus having a detector for a mounting unit Image forming apparatus having a detector for a mounting unit

1991-11-12

1993-07-06

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355219, G03G 1500

Patent

active

052258700

ABSTRACT:
An image forming apparatus including a photosensitive drum, a discharging device for discharging an electric charge on the photosensitive drum, a process unit detachably provided in a main body of the apparatus, a driving circuit for driving the discharging device, a detecting circuit for detecting a driving current when the discharging device is driven by the driving circuit, and a determining portion for determining a mounting state and the suitability of the process unit in the main body of the apparatus. Therefore, suitability of the process unit and attachment to the main body of the apparatus is electrically determined.

REFERENCES:
patent: 3976371 (1976-08-01), Moser et al.
patent: 4305651 (1981-12-01), Umezawa et al.
patent: 4585327 (1986-04-01), Suzuki
patent: 4803521 (1989-02-01), Honda
patent: 4851875 (1989-07-01), Tanimoto
patent: 4952974 (1990-08-01), Mori
patent: 4978995 (1990-12-01), Takahashi

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