Image forming apparatus

Details Image forming apparatus Image forming apparatus

1990-08-29

1992-03-10

Hix, L. T.

Photocopying

Projection printing and copying cameras

Illumination systems or details

355 77, 358 80, G03B 2772

Patent

active

050953281

ABSTRACT:
The present invention provides an image forming apparatus for reproducing an image from an original, wherein a character portion and an intermediate contrast portion of an original are discriminated and different density converting tables are used for the character portion and for the intermediate contrast portion. When a original includes both a character portion and the intermediate contrast portion, the density converting table for a character portion is applied to the character portions and the density converting table for intermediate contrast portion is applied to the intermediate contrast portions to form the image.

REFERENCES:
patent: 4786976 (1988-11-01), Takao et al.
patent: 4926251 (1990-05-01), Sekizawa et al.
patent: 4931984 (1990-06-01), Ny

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