Image forming apparatus and method

Details Image forming apparatus and method Image forming apparatus and method

1992-05-20

1993-11-16

Moses, R. L.

Photocopying

Contact printing

Light boxes

355208, 395900, G03G 1501

Patent

active

052628337

ABSTRACT:
According to the present invention, an image forming apparatus comprises an image forming unit for producing an image on paper, a detector for detecting a plurality of parameters indicating a state of the image forming unit, a corrector for correcting the state of the image forming unit, a rule memory for storing rules for determining the relation between the parameters and the timing of operation of the corrector, and a control for controlling the corrector according to the parameters the detector detects and the rules stored in the memory. Therefore, even a simple configuration permits high-precision control. This reduces a time loss due to the correcting operation, minimizes consumption of development agent, and thus ensures constant gradation all the time.

REFERENCES:
patent: 4888636 (1989-12-01), Abe
patent: 5029314 (1991-07-01), Katsumi et al.
patent: 5142332 (1992-08-01), Osawa et al.

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