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:
Sep. 25, 2012
Filed:
Jun. 16, 2010
Shingo Horita, Tokyo, JP;
Koichi Hashimoto, Yokohama, JP;
Ryo Nakamura, Kawasaki, JP;
Ryota Matsumoto, Yokohama, JP;
Yukwi Hong, Hiratsuka, JP;
Shingo Horita, Tokyo, JP;
Koichi Hashimoto, Yokohama, JP;
Ryo Nakamura, Kawasaki, JP;
Ryota Matsumoto, Yokohama, JP;
Yukwi Hong, Hiratsuka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes an image bearing member; a charging device, including a rotatable magnetic particle carrying member and electroconductive magnetic particles carried on the rotatable magnetic particle carrying member, for charging the image bearing member by contacting the magnetic particles to the image bearing member; a measuring device for measuring magnitudes of a first force in a first direction and a second force in a second direction which are produced in a contact region between the image bearing member and the magnetic particles, wherein the first direction and second direction are independent from each other; and a control device for controlling an image forming operation on the basis of the forces measured by the measuring device.