Patent ID: 7417661
Filing Date: 2008-08-26
Classification: B41J,G03G,G06K

Abstract:
1. An image forming apparatus comprising: a scanner motor that rotates a polygon mirror; a speed information detection unit that detects speed information corresponding to a rotational speed of the scanner motor; a first judgment unit that judges on the basis of the speed information whether or not the scanner motor has arrived at a first reference speed, which is lower than a rotational speed in scanning, within a first term since drive initiation of the scanner motor; a second judgment unit that judges on the basis of the speed information whether or not the scanner motor has arrived at a second reference speed, which is not lower than the first reference speed, after the first term, in a case where the first judgment unit has judged that the scanner motor has not arrived at the first reference speed within the first term; and an image formation unit that initiates an image formation process in a case where the first judgment unit has judged that the scanner motor has arrived at the first reference speed within the first term, and in a case where the second judgment unit has judged that the scanner motor has arrived at the second reference speed.