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:
Jun. 16, 1998
Filed:
Feb. 08, 1996
Tetsuo Yamanaka, Tokyo, JP;
Kazuhiro Yuasa, Zama, JP;
Shuichi Endoh, Isehara, JP;
Iwao Matsumae, Tokyo, JP;
Yoshiaki Tanaka, Kawasaki, JP;
Hiroshi Hosokawa, Yokohama, JP;
Mugijiroh Uno, Isehara, JP;
Hiroshi Saitoh, Ayase, JP;
Eiji Takenaka, Atsugi, JP;
Toshihiro Sugiyama, Tokyo, JP;
Eisaku Murakami, Hiratsuka, JP;
Satoru Komatsubara, Atsugi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
In an image forming apparatus using a corona discharge type charging device and a contact type image transferring device, a toner deposited on a photoconductive element in the form of a black stripe is prevented from being transferred to the image transferring device; otherwise, the toner would be transferred from the image transferring device to the rear of the following recording medium. Because the toner forming the black stripe is limited to the toner charged to a polarity opposite to an expected polarity, toner consumption ascribable to the stripe is reduced.