Moire reduction apparatus, method, and computer product

Details Moire reduction apparatus, method, and computer product Moire reduction apparatus, method, and computer product

2005-03-14

2009-11-17

Zimmerman, Mark K (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Specific image-processing circuitry

C358S001900, C358S536000, C358S003260

Reexamination Certificate

active

07619793

ABSTRACT:
An image forming apparatus has a color converter, a BG/UCR processor, a Bk/Lk generator, and a halftone processor. The cyan, the black, and the magenta are halftone screens having substantially equal frequencies and angle differences therebetween each set at approximately 30 degree. The light black is a halftone screen, and the light black and the black have a frequency ratio of 1.0 to 1.2, which is the ratio of the higher one of the frequencies of the light black and the black to the lower one thereof, and have the angle difference of approximately 45 degrees.

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