Electrophotography – Control of electrophotography process – Control of developing
Patent
1997-06-25
1999-02-02
Moses, Richard
Electrophotography
Control of electrophotography process
Control of developing
399 53, 399270, G03B 1508
Patent
active
058677500
ABSTRACT:
A method for achieving adjusted toner concentration of printed image on a recording medium in an image forming apparatus using an electrophotographic developing process including a photosensitive drum for forming a latent image on its negatively charged photoconductive insulating surface exposed to light according to an image pattern and a developing roller charged with a negative developing voltage to charge by rubbing a toner supplied from a toner supplier with a negative voltage. The method includes the steps of keeping constant the background voltage of remaining portion of the photoconductive insulating surface except for the latent image portion, and changing the voltage of the latent image portion of the photoconductive insulating surface so as to adjust the amount of toner particles attracted to the latent image portion for forming an enhanced printed image on the recording medium without contamination in the background thereof
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Bushnell Esq. Robert E.
Moses Richard
Samsung Electronics Co,. Ltd.
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