Color image processing apparatus for selectively altering image colors

Patent 4873570 Issued on October 10, 1989. Estimated Expiration Date:

November 13, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

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Inventors

Assignee

Canon Kabushiki Kaisha

Application

No. 120820 filed on 11/13/1987

US Classes:

358/515, Color separation358/518Color correction

Examiners

Primary: Groody, James J.
Assistant: Powell, Mark R.

Attorney, Agent or Firm

Fitzpatrick, Cella, Harper & Scinto

Foreign Patent References

60-236577 JP 11/13/1985
2161670 GB 01/13/1986

International Class

H04N 001/40

Foreign Application Priority Data

1986-11-14 JP

Abstract

A color image processing apparatus such as a color copying machine has a color appointing device for enabling an operator to appoint any desired color involved in an original image, a color range changing device for manually or automatically changing the size of range of the colors which can be regarded as being the same as the predetermined color, a target color appointing device for appointing a color to which the predetermined color is to be converted, and a color image forming device such as a laser beam printer for forming a color image with the predetermined color and colors in the color range converted into the target color.