Digital image forming apparatus having gradation characteristic

Details Digital image forming apparatus having gradation characteristic Digital image forming apparatus having gradation characteristic

1993-05-17

1996-12-17

Wong, Peter S.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358300, 358519, 358521, 358523, 355208, H04N 140, H04N 129, G03F 308, G03G 2100

Patent

active

055859275

ABSTRACT:
In a digital image forming apparatus, a user can select a desired gradation curve representing the relation of the density of reproduced image to the input image signal obtained by reading a document among a plurality of gradation data stored in a memory in correspondence to image forming conditions of an electrophotographic process of forming an image. The image forming condition is determined separately. A gradation correction data is calculated from the gradation data to realize the object gradation curve. Then, an input image signal is converted to light quantity data for a beam for exposing a photoconductor by using the calculated gradation correction data to form a latent image on a photoconductor in the image forming conditions.

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