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Image processor for an improved tone level expression

  • US 5,383,033 A
  • Filed: 10/23/1992
  • Issued: 01/17/1995
  • Est. Priority Date: 10/25/1991
  • Status: Expired due to Fees
First Claim
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1. An image processor for presenting tone level expression on the basis of continuous-tone image data applied thereto, said processor comprising:

  • a plurality of dot generating means for generating a dot on the basis of the image data in different modes, respectively, to be used when a tone represented by the image data is in a gray level region between a high level region and a low level region; and

    means for comparing a fixed first value with a second value generated in a predetermined way, when the tone represented by said image data is in the gray level region; and

    selecting one of said plurality of dot generating means depending on a result of the comparison.

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