Title:
Image forming device
Document Type and Number:
Japanese Patent JP6089422
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of realizing highly accurate density correction in a sub-scanning direction.SOLUTION: There is provided an image forming apparatus which includes: a light source; a drum which is a photoreceptor; an optical scanning apparatus in which a light beam emitted from the light source is deflected and scanned in a main scanning direction by deflecting and scanning means and the deflected and scanned light beam is collected on the drum, which is a surface to be scanned, by scanning and imaging means to form a latent image on the drum surface; and an endless belt which is disposed in contact with the drum and on which an image corresponding to the latent image is formed. The image forming apparatus comprises: pattern forming means for forming a pattern for detecting density variation having a plurality of generation cycles on the endless belt in the conveyance direction of the endless belt; a density sensor for detecting the pattern for detecting density variation to output a density signal including information on the density variation in the conveyance direction of the endless belt; and a cycle detection sensor for detecting a plurality of cycles included in the density variation.
Inventors:
Atsushi Omori
Masaaki Ishida
Kazuhiro Akatsu
Shiro Iwata
Fujita Hayato
Masaaki Ishida
Kazuhiro Akatsu
Shiro Iwata
Fujita Hayato
Application Number:
JP2012061246A
Publication Date:
March 08, 2017
Filing Date:
March 16, 2012
Export Citation:
Assignee:
株式会社リコー
International Classes:
G03G15/00; B41J2/47; G03G21/14
Domestic Patent References:
| JP2007140402A | ||||
| JP2009192896A | ||||
| JP5268440A |
Attorney, Agent or Firm:
Tadahiko Ito