Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
COLOR IMAGE FORMING DEVICE
Document Type and Number:
Japanese Patent JP3747279
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To detect both the density of an achromatic color patch image and the density of a chromatic color patch image by a simple structure by means of an inexpensive multipurpose density detectors.
SOLUTION: The color image forming device adjusts image quality in such a manner that the density of the achromatic color patch image A and the density of the chromatic color patch image A, which are formed on a transfer carrying belt 216, are detected by the different detectors 16 and 17, each of which is composed of a light emitting part and a light receiving part. The two detectors 16 and 17 are disposed on a common substrate 15 with a specific distance between them. The light emitting part of the detector 16 for detecting the density of the achromatic color patch image is disposed opposite a flat surface portion of the belt 216 so that its optical axis is directed to the flat surface portion of the belt 216. The light emitting part of the detector 16 for detecting the density of the chromatic color patch image is disposed opposite a curved surface portion of the belt 216 so that the optical axis is out of the curvature center of the curved surface portion of the belt 216.


More Like This:
Inventors:
Kaori Bulk
Koichi Yamauchi
Toshio Yamanaka
Masashi Hirai
Fumio Shimazu
Hiroshi Tachiki
Application Number:
JP2001380107A
Publication Date:
February 22, 2006
Filing Date:
December 13, 2001
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Sharp Corporation
International Classes:
G01N21/47; G03G15/01; G03G13/16; G03G15/00; (IPC1-7): G03G15/01; G01N21/47; G03G13/16; G03G15/00
Domestic Patent References:
JP5249787A
JP5322759A
JP11002600A
JP3045972A
Attorney, Agent or Firm:
Norihiko Hibi
Einosuke Kishimoto