Photocopying – Contact printing – Light boxes
Patent
1992-04-17
1993-06-01
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355202, 355210, 395 21, 395 23, G03G 2100
Patent
active
052164632
ABSTRACT:
An electrophotographic process control device capable of controlling the supply of a toner in such a manner as to stabilize an image against changes in the characteristics of a photoconductive element and in toner density. At the learning stage of a neural network, data from sensors are applied to the input layer of the network while a latent image gamma characteristic indicative of a relation between the amount of exposure and the potential of an image area is used as learning data to be given via the output layer of the network. At a control stage, the data from the sensors are applied to the input layer of the network, as at the learning stage, and the amount of exposure is so controlled as to set up a desired potential in an image area on the basis of a latent image gamma characteristic obtainable from the output layer of the network.
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Grimley A. T.
Ricoh & Company, Ltd.
Royer William J.
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