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:
Apr. 18, 2006
Filed:
Sep. 30, 2004
Shinji Yasukawa, Nagano, JP;
Nobuhiro Miyakawa, Nagano, JP;
Hiroshi Toyama, Nagano, JP;
Takeshi Kobayashi, Nagano, JP;
Shoji Hiruta, Nagano, JP;
Shinji Yasukawa, Nagano, JP;
Nobuhiro Miyakawa, Nagano, JP;
Hiroshi Toyama, Nagano, JP;
Takeshi Kobayashi, Nagano, JP;
Shoji Hiruta, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An electrostatic latent image is formed on an image carrier. A first roller is opposed to the image carrier with a gap in between. A second roller is in contact with the first roller such that toner of a one-component type is supplied onto the image carrier by way of the first roller to develop the electrostatic latent image as a visible toner image. A single power source supplies a bias voltage in which an AC voltage is superposed on a DC bias voltage. The bias voltage is supplied to the first roller through a first path and to the second roller through a second path. A resistor is provided on the first path between the first roller and a branching point of the first path and the second path.