Image processing method and apparatus and image forming method a

Details Image processing method and apparatus and image forming method a Image processing method and apparatus and image forming method a

1995-12-19

2000-01-18

Riley, Shawn

Facsimile and static presentation processing

Facsimile

Recording apparatus

358459, 347131, H04N 138

Patent

active

060162066

ABSTRACT:
An image can be outputted with a high sharpness without deteriorating a resolution. In order to output an image of a high picture quality while suppressing the occurrence of a moire, an exposure amount is modulated in accordance with pixel density information of the image divided into pixels of a predetermined size by an exposure amount modulating unit in a light scanning unit, thereby expressing an image dark/light state. In this case, in a highlight density region in which a pixel density is equal to or less than 1/3 of the maximum image density, the density data of two adjoining pixels is modulated by one pixel and the other pixel is not recorded. In a density region in which the image density lies within a range from 1/3 to 1/2 of the maximum image density, a part of the density data of one of the two adjoining pixels is transposed to the other pixel. In a density region in which the image density is equal to or larger than 1/2 of the maximum density, the pixel transposition is not performed.

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patent: 5574833 (1996-11-01), Yoshiaki

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