Color image forming method and apparatus for improved image colo

Details Color image forming method and apparatus for improved image colo Color image forming method and apparatus for improved image colo

1989-09-12

1992-08-04

Braun, Fred L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

355326, G03F 308

Patent

active

051363720

ABSTRACT:
An image forming apparatus for forming a color image in a plurality of colors including a plurality of image forming units which are different in image forming color from each other, a spatial frequency detector for detecting a spatial frequency relating to an image of a prescribed color for every portion of an image to be formed, and a control unit for controlling the image forming units to perform image formation by one of the image forming units in a portion belonging to that having a high spatial frequency within portions to be subjected to image formation in the prescribed color while performing image formation by overlapping a plurality of colors through at least two of the image forming units in a portion belonging to that having a low spatial frequency on the basis of a detection output from the spatial frequency detector. Method steps for improving image color reproducibility are also described.

REFERENCES:
patent: 4194221 (1980-03-01), Stoffel
patent: 4623917 (1986-11-01), Noguchi
patent: 4655579 (1987-04-01), Adachi et al.
patent: 4711553 (1987-12-01), Watanabe
patent: 4737821 (1988-04-01), Suzuki et al.
patent: 4794421 (1988-12-01), Stoudt et al.
patent: 4809063 (1989-02-01), Moriguchi et al.
patent: 4812899 (1989-03-01), Kueppers

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