Transfer type image forming apparatus with toner content detecti

Details Transfer type image forming apparatus with toner content detecti Transfer type image forming apparatus with toner content detecti

1990-07-31

1992-06-09

Grimley, A. T.

Photocopying

Contact printing

Light boxes

G03G 2100

Patent

active

051211637

ABSTRACT:
An image forming apparatus includes a movable image bearing member; a device for forming an image on the image bearing member, the image forming device including a developing device for forming a toner image on the image bearing member; a transfer device for transferring a toner image onto a transfer material, the transfer device including transfer material carrying member for carrying the transfer material to an image transfer station; a toner content detector for detecting toner content, the detector detecting toner content using the toner deposited on the image bearing member by the developing device; and a controller for controlling the toner content in the developing device in accordance with an output of the detector; wherein the toner for the detection is deposited on such a portion of the image bearing member as to be out of contact from the transfer material carrying member.

REFERENCES:
patent: 3872825 (1975-03-01), Davidson
patent: 4277162 (1981-07-01), Kasahara et al.
patent: 4646679 (1987-03-01), Ohno et al.
patent: 4712906 (1987-12-01), Bothner et al.
patent: 4766463 (1988-08-01), Watanuki et al.
patent: 4864367 (1989-09-01), Nakahara et al.
patent: 4894685 (1990-01-01), Shoji
patent: 4965634 (1990-10-01), Bando

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