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:
Feb. 27, 2007
Filed:
Jun. 18, 2004
Satoru Furuya, Tokyo, JP;
Satoru Furuya, Tokyo, JP;
Oki Data Corporation, Tokyo, JP;
Abstract
A developing agent image is formed by adhering a developing agent onto an electrostatic latent image formed on an image holding material and transferred onto an image forming medium, thereby forming an image. A resistance value ratio of a resistance value of a transfer member arranged so as to face the image holding material when a voltage 1000 V is applied to the transfer member to a resistance value when a voltage 500 V is applied is set to (0.5≦ratio≦0.89). Likewise, a resistance value ratio of a resistance value when 2000 V is applied to that when 1000 V is applied is set to (0.3≦ratio≦0.88). Since a just enough transfer current can be optimally generated, image quality can be improved and an image forming apparatus which does not need a large-capacity power source and an elastic roller are provided.