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:
Nov. 14, 2006
Filed:
Jan. 05, 2004
Nobuhiro Miyakawa, Nagano-Ken, JP;
Shinji Yasukawa, Nagano-Ken, JP;
Mikio Furumizu, Nagano-Ken, JP;
Nobumasa Abe, Nagano-Ken, JP;
Masanao Kunugi, Nagano-Ken, JP;
Yoshiro Koga, Nagano-Ken, JP;
Nobuhiro Miyakawa, Nagano-Ken, JP;
Shinji Yasukawa, Nagano-Ken, JP;
Mikio Furumizu, Nagano-Ken, JP;
Nobumasa Abe, Nagano-Ken, JP;
Masanao Kunugi, Nagano-Ken, JP;
Yoshiro Koga, Nagano-Ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
The invention provides an imaging system wherein toners of two or more colors are used to form toner images and the toner images are successively used to form a color image on a recording material. The imaging system can form an image with high transfer efficiency. An electrostatic latent image is formed on an image carrier. Using developing units for two or more colors, images are formed. Then, the images are successively transferred onto an intermediate transfer medium at a transfer voltage fed from a constant-voltage power supply. The developing units are located such that development occurs in descending toner work function order.