Image processing apparatus and method

Details Image processing apparatus and method Image processing apparatus and method

2007-05-15

2007-05-15

Rogers, Scott A. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003260

Reexamination Certificate

active

10420729

ABSTRACT:
Entered image data is stored in a page buffer on a per-page basis, and image data that has been stored in the page buffer is subjected to error diffusion processing on a per-raster basis, thereby creating and outputting binarized data. Sub-scanning direction error due to error diffusion processing is stored in an error buffer at the time of binarization. The error buffer is initialized based upon positions, in the sub-scanning direction, of a raster that underwent error diffusion processing immediately previously and a raster to undergo error diffusion processing, and the number of rasters on a page. As a result, it is possible to avoid a deterioration in image quality at page boundaries and at the beginning of an image simultaneously when data for printing on elongated sheets of paper is processed.

REFERENCES:
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patent: 1 005 221 (2000-05-01), None
patent: 10-44530 (1998-02-01), None
patent: 10-329383 (1998-12-01), None
patent: 2000/158714 (2000-06-01), None

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