Printing system and printing method

Facsimile and static presentation processing – Static presentation processing – Dot matrix array

Reexamination Certificate

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Details

C358S002990, C358S003230, C358S001400, C358S001160, C347S009000, C347S015000, C347S041000, C347S043000

Reexamination Certificate

active

07139096

ABSTRACT:
The colors used for forming an image are limited in advance to a predetermined number of color patterns called representative colors; on the host side the image data received is divided into blocks, for each of which a representative color is determined in a representative color code conversion unit; the representative colors and their associated representative color codes are transmitted to the printer side; and on the printer side the representative color codes are converted into dot patterns in a pattern conversion unit for each pass before being output. The above procedure allows a series of processing—resolution conversion, masking/UCR processing, output γ correction and binarization processing—to be realized with a simple configuration.

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patent: 5638188 (1997-06-01), Moro et al.
patent: 5680519 (1997-10-01), Neff
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patent: 5832184 (1998-11-01), Konno et al.
patent: 5927874 (1999-07-01), Kikuta et al.
Gonzales, Rafael C, Digital Image Processing, 1992, Addison Wesley Publishing, pp. 354-357.
Gonzales, Rafael C, Digital Image Processing, 1992, Addison Wesley Publishing, pp. 354-356.

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