Image forming apparatus

Details Image forming apparatus Image forming apparatus

1988-11-03

1990-05-01

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355206, 355204, G03G 2100

Patent

active

049222945

ABSTRACT:
An image forming apparatus equipped with a sensor for detecting the requirement of replenishment and exchange of expendable supplies, parts and the like and an image forming structure capable of forming on the same sheet of paper a prewarning image in addition to a regular image formed corresponding to an original or image information to be copied.
The image forming structure receives different control depending on whether or not the sensor is detecting the requirement of replenishment and exchange, wherein if the sensor is not detecting the requirement, it forms only a regular image while when the sensor detects the requirement, it forms a prewarning image together with a regular image thereby indicating the requirement of replenishment and exchange by the prewarning image on the same sheet on which a regular image is formed.

REFERENCES:
patent: 4538267 (1985-09-01), Uchida
patent: 4597662 (1986-07-01), Hirata et al.
patent: 4603962 (1986-08-01), Dekura
patent: 4647185 (1987-03-01), Takeda et al.
patent: 4682158 (1987-07-01), Ito et al.
patent: 4724462 (1988-02-01), Yamasaki et al.
patent: 4804998 (1989-02-01), Miyawaki

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