Electrophotographic image forming method of digital type having

Details Electrophotographic image forming method of digital type having Electrophotographic image forming method of digital type having

1993-05-24

1996-10-08

Brown, Brian W.

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

347131, 358298, G01D 1506, H04N 121

Patent

active

055636454

ABSTRACT:
The present invention relates to an electrophotographic technique for enhancing the quality of a reproduced image of character information and image information having an intermediate gradient.
A latent image forming means provides a plurality of preset .gamma.-features and a plurality of sharpness features forsetting a resolving power of an image to be formed which can be selected optionally, and, in the latent image forming means, when a particular sharpness feature is set in response to a .gamma.-feature selected from the aforementioned .gamma.-features. In the reproduction of character image information, a .gamma.-feature for enabling the image reproduction to enhance the edge effect is selected, thereby emphasizing the sharpness feature. Whereas, in the reproduction of the image information to reproduce an intermediate gradient, a .gamma.-feature for enabling the reproduction of the intermediate gradient is selected, thereby weakening the sharpness feature.

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