Title:
IMAGE FORMING DEVICE
Document Type and Number:
Japanese Patent JP3391847
Kind Code:
B2
Abstract:
PURPOSE: To provide an image forming device wherein an irregularity in color and a Moire fringe are inhibited from occurring, and a high quality image can be obtained.
CONSTITUTION: Video signals of MCYK inputted from a reader part which is not given in the figure are processed in an image independently each color, modulated in a pulse width, and converted to laser beams with four semiconductor lasers, which are scanned with polygon mirrors arranged coaxially in two stages. Laser beams of M and Y are scanned with the upper stage polygon mirror 301a, and laser beams of C and K are scanned with the lower stage polygon mirror 301b by each different recording frequency. Exposure in a dot corresponding to each color image is formed on a surface of each photosensitive drum.
Inventors:
Satoshi Fukushima
Application Number:
JP16138693A
Publication Date:
March 31, 2003
Filing Date:
June 30, 1993
Export Citation:
Assignee:
Canon Inc
International Classes:
B41J2/21; B41J2/325; B41J2/47; B41J2/525; G03G15/01; H04N1/52; (IPC1-7): B41J2/525; B41J2/21; B41J2/325; G03G15/01
Domestic Patent References:
| JP3220573A |
Attorney, Agent or Firm:
Yasunori Otsuka (3 others)
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