Image processing method and image forming apparatus
AssigneeKonishiroku Photo Industry Co., Ltd.
InventorsMasakazu Fukuchi, Kiyoshi Akazawa, Masahiko Matsunawa, Hiroshi Niki, Shunji Matsuo, Hiroyuki Yamamoto, Yoshinori Abe
Life of this patent
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Abstract
An image processing method and apparatus wherein document information is separated by using an optical device into two colors that are complementary to each other, converted photo-electrically and processed by using a photo-electric conversion device, and extracted on the basis of the result of processing by using a color extraction information generation device, and a color information designated by the color extraction information of the color extraction information generation device is stored in a color information storage device.
Claims22
An image processing apparatus comprising:
- optical means for obtaining optical signals of two colors that are complementary to each other from document information;
- photo-electric conversion means for converting said optical signals from said optical means into electric signals, respectively;
- color extraction information generation means for processing two image signal outputs of said photo-electric conversion means and extracting colors on the basis of the result of processing;
- and
- color information storage means for storing color information designated by the color extraction information of said color extraction information generation means.
A color image forming apparatus comprising:
- means for scanning a document;
- means for irradiating said document with light and separating a reflected light from said document into optical images having at least two mutually different wavelength components;
- means for converting said optical images into electric signals;
- means for converting said electric signals into digital signals;
- means for extracting colors from said digital signals on the basis of predetermined color information and outputting color signals;
- means for converting said color signals into optical signals;
- means for scanning a photosensitive member which is charged uniformly, and writing said optical signals on said photosensitive member;
- and
- a plurality of development means for developing said photosensitive member, into which said optical signals are written, by developers;
- wherein writing to said photosensitive member and development are effected several times and then the image is transferred to a member to which it is to be transferred.
An image processing method comprising separating optical information into two separate complementary color components;
- photoelectrically converting said two color components into two electrical signals;
- forming multi-color image signals on the basis of said two electrical signals;
- selecting one color component out of said multi-color image signals;
- generating a reference signal corresponding to said selected color component;
- comparing an image signal of said selected color component with said reference signal;
- and
- forming a recording image signal on the basis of the result of the comparison.
An image processing apparatus comprising:
- optical means for separating an inputted light into optical signals of two complementary colors;
- photoelectric conversion means for converting each of said optical signals into two image signals;
- image signal forming means for forming multi-color image signals on the basis of said two image signals;
- selection means for selecting one color component among said multi-color image signals;
- reference signal generation means for generating a reference signal corresponding to said selected color component;
- comparison means for comparing an image signal of said selected color component with said reference signal;
- and
- recording image forming means for forming a recording image based upon the output of said comparison means.
Dependencies are inferred from the claim text.