Photocopying – Contact printing – Light boxes
Patent
1991-07-29
1992-12-29
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355207, 355246, 395 10, G03G 2100
Patent
active
051755858
ABSTRACT:
In an adaptive control electrophotographic apparatus, input voltages such as illumination power source voltage and electrostatic charge voltage are varied by a small value, and a resultant density of toner image on a photoconductive substance is detected. Then the above-mentioned small value is changed on the basis of a difference between the resultant density and a target density. After several repetitions of the above, the small value is determined on the basis of a qualitative model which is composed of a boundary function including the input voltages and boundary parameters of the apparatus. If the trend in the difference between the resultant density and the target density is an increase, the qualitative mode is changed to effect a decreasing trend.
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Ito Osamu
Matsubayashi Shigeaki
Grimley A. T.
Horgan Christopher
Matsushita Electric - Industrial Co., Ltd.
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