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:
May. 01, 2012
Filed:
Oct. 29, 2009
Norihiko Kubo, Toride, JP;
Norihiko Kubo, Toride, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a rotatable photosensitive member chargeable by a charging member; an applying device for applying to the charging member a charging bias; an image forming device for forming a toner image on the photosensitive member; a setting device for setting a first frequency of a first charging bias in a first rotation speed mode and for setting a second frequency of a second charging bias in a second rotation speed mode; a detector for detecting current passing between the charging and the photosensitive members during application of a test bias to the charging member; and an adjusting device for adjusting the second charging bias based on an output of the detector when the photosensitive member is rotated at a first speed and a test bias having the second frequency is applied to the charging member when switching from the first to the second rotation speed modes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile