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:
Mar. 05, 2013
Filed:
Sep. 05, 2008
Yoshinori Nakagawa, Kanagawa, JP;
Yasuyuki Ishii, Tokyo, JP;
Hideki Kosugi, Kanagawa, JP;
Tomoko Takahashi, Kanagawa, JP;
Masaaki Yamada, Tokyo, JP;
Ichiro Kadota, Kanagawa, JP;
Yoshinori Nakagawa, Kanagawa, JP;
Yasuyuki Ishii, Tokyo, JP;
Hideki Kosugi, Kanagawa, JP;
Tomoko Takahashi, Kanagawa, JP;
Masaaki Yamada, Tokyo, JP;
Ichiro Kadota, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing device constituted to be capable of reliably making toner flare, and carrying out developing normally in the developing area, by preventing toner from adhering to the toner carrier. A developing device having a toner carrier which is disposed in opposition to a latent image carrier and which carries toner for developing an electrostatic latent image on the latent image carrier, the developing device including: a plurality of electrodes aligned at a predetermined interval within the toner carrier; voltage application means for applying a voltage to the electrodes so that the electric field between the plurality of electrodes varies with time, wherein the electric field between the electrodes causes the toner on the toner carrier to hop and form a cloud; and a toner adhesion prevention member that is provided upstream of a developing area where the latent image carrier is in opposition to the toner carrier and that prevents adhesion of toner to the toner carrier. According to the developing device, it is possible to prevent toner from adhering to the toner carrier, and it is possible to make the toner flare reliably.