Image forming apparatus with halftone control function

Details Image forming apparatus with halftone control function Image forming apparatus with halftone control function

1987-09-24

1989-05-16

Goldberg, E. A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358 75, 346 76PH, H04N 121

Patent

active

048314625

ABSTRACT:
In one aspect of the present invention, an image forming section forms an image corresponding to the image data on an image receiving medium by selectively using at least first and second image forming media different from each other. A gradation determinator determines first and second gradation methods corresponding to the first and second image forming media which are selectively used. A first gradation section performs gradation conversion corresponding to the first gradation method. A second gradation section performs gradation conversion corresponding to the second gradation method. A controller supplies the image data to the image forming section through the first or second gradation section in response to a determination result from the gradation determinator so that the image forming section forms a halftone-controlled image. In another aspect of the present invention, a color image data output section outputs color image data to be formed on an image receiving medium as a main image. A positioning-mark data output section outputs positioning-mark data to be formed on a predetermined position of the image receiving medium as a positioning-mark to be used after image formation. A gradation section performs predetermined gradation conversion of the color image data. An image forming section forms the main image with halftone control on the image receiving medium using a single- or multicolor image forming medium in accordance with the color image data subjected to gradation conversion and the positioning-mark data, and forms the positioning-mark without halftone control on the predetermined position of the image receiving medium.

REFERENCES:
patent: 4593297 (1986-06-01), Suzuki
patent: 4639742 (1987-01-01), Takahashi

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