Apparatus and method determining whether object specified to enable an underlying object to be seen there through is included in data to be printed, and medium having instructions for performing the method

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United States of America Patent

PATENT NO 8830546
SERIAL NO

13410464

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Abstract

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An image processor and an image processing method which can minimize variation of color tone or density in an image after screen processing, even if semi-transparency has been specified. The image processor generates semi-transparent image data by overlaying a semi-transparent object on the PDL data to be rendered semi-transparent. Subsequently, screen processing is performed on the semi-transparent image data, by dither processing. Subsequently it is determined whether or not to define the screen processed semi-transparent image data as the image data for printing. If the result of determination is No, the halftone value of the semi-transparent object is modified to be larger than the current value.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yabe, Takashi Yokohama, JP 48 386

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