The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2013
Filed:
Jul. 23, 2012
Shota Hattori, Osaka, JP;
Shota Hattori, Osaka, JP;
Abstract
An image forming apparatus includes a correction control unit and a correction amount adjusting unit. The correction control unit performs a phase correction process of changing a drive frequency of a driver for driving and rotating a rotating polygon mirror having a rotational phase difference judged not to coincide by a predetermined correction amount and driving the driver for a period corresponding to a specified clock number by a drive clock signal of the changed drive frequency if a rotational phase difference of another rotating polygon mirror does not coincide with a reference rotational phase difference. The correction amount adjusting unit reduces the predetermined correction amount by a predetermined specified amount and causes the correction control unit to perform the phase correction process again if the rotational phase difference does not coincide with a reference rotational phase difference after the phase correction process is performed.