Printer with scanner function, and its control method and...

Details Printer with scanner function, and its control method and... Printer with scanner function, and its control method and...

2004-04-22

2010-12-28

Poon, King Y (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Color correction

C358S002100, C358S003020, C358S534000

Reexamination Certificate

active

07859730

ABSTRACT:
When text is taken in with a scanner, the reflection of the light from a sheet of paper, etc. causes a tinge on the sheet of paper. The tinge around each letter is printed as minute dots, and the outlines of printed letters are blurred and the clearness or distinctness of the letters are decreased.When printing text taken in through a scanner unit30, by reducing (or reducing to zero) the ratios of occurrence of small dots in a gradient range “n” or “m” of the data for printing (CMYK signals) generated from image data (RGB signals), or converting such ratios of occurrence of small dots into the ratios of occurrence of large dots based on the weight ratio, the blur of each letter that may be caused by the small dots can be reduced, and the clearness and distinctness of each letter can be improved.

REFERENCES:
patent: 5884296 (1999-03-01), Nakamura et al.
patent: 6317220 (2001-11-01), Fujita et al.
patent: 6466335 (2002-10-01), Umezawa et al.
patent: 2002/0126303 (2002-09-01), Yamada
patent: 2002-252781 (2002-09-01), None
Abstract of Japanese Patent Publication No. 2002-252781, Pub. Date: Sep. 6, 2002, Patent Abstracts of Japan.

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