Patent ID: 6285839
Filing Date: 2001-09-04
Classification: G03G

Abstract:
An image forming apparatus, comprising:a plurality of image forming units, each of which has an image holder and forms an image on the image holder according to set image forming conditions;a transfer unit for transferring images formed by each image forming unit onto a transfer medium;a plurality of sensors, each of which is located near a different image forming unit and detects a density of an image transferred from a proximate image forming unit to the transfer medium;an adjustment unit for adjusting the image forming conditions of each image forming unit according to a detection value produced by each sensor;a control unit for having the transfer unit transfer, onto the transfer medium, a standard image formed by an image forming unit located furtheset upstream in a direction in which the transfer medium moves; anda correction unit for correcting, based on the detection values produced when the sensors read the standard image produced under control of the control unit, the detection values of the sensors before the detection values are used by the adjustment unit.