Image forming apparatus that controls image formation condition

Patent metadata

Field	Value
Publication number	US-9049313-B2
Application number	US-201314104102-A
Country	US
Kind code	B2
Filing date	Dec 12, 2013
Priority date	Dec 19, 2012
Publication date	Jun 2, 2015
Grant date	Jun 2, 2015

Abstract

An image forming apparatus includes: a receiving unit configured to receive reflection light emitted by a light emitting unit, and output a detection signal corresponding to an amount of received reflection light; a detection unit configured to output, as an output signal, a signal corresponding to a difference between a value that corresponds to an amount of reflection light from a first position at which a detection image having one or more lines in a direction different from a movement direction is formed and a value that corresponds to an amount of reflection light from a second position different from the first position; and a control unit configured to control an image formation condition related to density of an image to be formed, based on a peak value of the output signal.

First claim

What is claimed is:

1. An image forming apparatus comprising:
an image carrier,
an image forming unit configured to form, on the image carrier, a detection image that has one or more lines in a direction different from a movement direction of a surface of the image carrier;
a light emitting unit configured to emit light toward the image carrier on which the detection image is formed;
a light receiving unit configured to receive reflection light of the light emitted by the li…

Assignees

• Canon Kk

Inventors

• Mukaibara Takuya
• Fujii Kenichi

Classifications

• H04N1/6044 Primary

  Electricity · mapped topic

• H04N1/407

  Electricity · mapped topic

• G03G15/00

  Physics · mapped topic

• H04N1/00031 Primary

  Electricity · mapped topic

• H04N1/506

  Electricity · mapped topic