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Image processor

  • US 5,398,124 A
  • Filed: 06/26/1992
  • Issued: 03/14/1995
  • Est. Priority Date: 06/29/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. An image processor, wherein each image data is processed to obtain image data for printing for each pixel, comprising:

  • a read means for reading a document image to send an image data of three primary colors of an additive color system;

    an edge decision means for deciding an edge image portion according to the image data received from said read means;

    an achromatic color decision means for deciding an achromatic color according to the image data received from said read means;

    a generation means for generating image data of three primary colors in a subtractive color system and of a black color from the image data received from said read means;

    a correction means for conducting edge emphasis processing not on the image data of the three primary colors in the subtractive color system, but on the image data of the black color, in an edge image portion of achromatic color decided by said edge decision means and said achromatic color decision means.

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