Image-writing device and method and image-forming apparatus...

Details Image-writing device and method and image-forming apparatus... Image-writing device and method and image-forming apparatus...

2005-05-24

2005-05-24

Lee, Thomas D. (Department: 2624)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003120, C358S534000

Reexamination Certificate

active

06897982

ABSTRACT:
An image-writing device writes a dot image onto an image-receiving body in such a way that the dots align at a certain screen angle. The dots are written by an array of writing elements such as light-emitting diodes. The image-writing device has a memory that stores compensation parameters that compensate for non-uniformity of the writing elements. The compensation parameters are also calculated to produce dots with approximately uniform widths as viewed in the screen-angle direction. When driven according to the compensation parameters, the writing elements produce a dot image that is comparatively free of dot-width irregularities aligned in the screen-angle direction, which is the direction in which such irregularities are most noticeable.

REFERENCES:
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patent: 5359424 (1994-10-01), Kobayashi
patent: 5436644 (1995-07-01), Motoi et al.
Tajima, “Color Image Reproduction Theory,”Maruzen, pp. 120-123, (1996).

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