Patent ID: 9049313
Filing Date: 2015-06-02
Classification: G03G,H04N

Abstract:
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 light emitting unit, and output a detection signal that corresponds to an amount of received reflection light including a specular reflection light component; a detection unit configured to output, as an output signal, a signal that corresponds to a difference between a detection signal value that corresponds to an amount of reflection light received from a first position at which the detection image is formed and a detection signal value that corresponds to an amount of reflection light received 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 of the detection unit.