Reducing a difference in picture quality between...

Details Reducing a difference in picture quality between... Reducing a difference in picture quality between...

2005-07-19

2005-07-19

Hirshfeld, Andrew H. (Department: 2854)

Typewriting machines

Including control of format by programmed-control-system

C101S128400

Reexamination Certificate

active

06918706

ABSTRACT:
A difference of picture quality between a foreground image and a background image is reduced and a good print result in which a boundary between the foreground image and the background image is inconspicuous is obtained. A printing apparatus for compressing raster image information which is formed in accordance with inputted print information, using the compressed image as a background image, and drawing a foreground image thereon. After the foreground image was drawn on a RAM2, a degree of image deterioration due to compression of the compressed background image is detected and a compressing process which causes the image deterioration of the degree similar to the detected image deterioration is performed to the whole image.

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