Patent ID: 9001377
Filing Date: 2015-04-07
Classification: G06K,H04N

Abstract:
1. An image forming apparatus, comprising: a density detection image forming section configured to drive at least one image forming unit to form a density detection image on a surface of a belt; a drive section configured to drive the belt to run; a light source that irradiates the density detection image with light; a light receiving section that receives light reflected by the density detection image and outputs an output signal indicative of an intensity of the received light; a light intensity obtaining section configured to cause the drive section to drive the belt to run and the light source to emit light so that the light source irradiates the density detection image a first number of times at intervals of a first distance in a direction in which the belt runs, and the light receiving section receives the light reflected from the density detection image, the first number of times being determined by at least the first distance and a second distance in which the first distance lies; a selecting section configured to select a second number of levels of light intensity from among a plurality of levels of light intensity obtained by the light intensity obtaining section; and a density correcting section configured to perform print density correction for the at least one image forming unit by using the second number of levels of light intensity selected by the selecting section.