The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 1999
Filed:
Jul. 27, 1995
Nobuatsu Sasanuma, Yokohama, JP;
Tatsuo Takeuchi, Kawasaki, JP;
Rie Saito, Yokohama, JP;
Yuichi Ikeda, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image having suitable color-tone and density is formed on a recording medium so that a full-color image of an excellent color-tone depending on a OHP can be projected, wherein a CCD separates colors of an original image to read it for converting into a RGB digital signal by an A/D conversion circuit, the process corresponding to a required image signal forming condition is executed by image process means for the digital signal to generate an image signal for outputting it to an LD driver, and a full-color image forming apparatus for forming a color image on a recording medium utilizing plural kinds of color materials based on the image signal comprises the image processing means for executing a gradation conversion process for the signals of C, M and Y in a LUT 1 circuit and executing a different gradation conversion process for a black signal Bk in a LUT 2 circuit different from a LUT 1 circuit.