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:
Oct. 02, 2012
Filed:
Sep. 07, 2010
Tomoyuki Imura, Toyohashi, JP;
Kazuhiro Saito, Toyokawa, JP;
Takuya Okada, Toyokawa, JP;
Takuya Sasaki, Toyokawa, JP;
Chikara Tsutsui, Nishinomiya, JP;
Takayuki Takai, Anjou, JP;
Tomoyuki Imura, Toyohashi, JP;
Kazuhiro Saito, Toyokawa, JP;
Takuya Okada, Toyokawa, JP;
Takuya Sasaki, Toyokawa, JP;
Chikara Tsutsui, Nishinomiya, JP;
Takayuki Takai, Anjou, JP;
Konica Minolta Business Technologies, Inc., Tokyo, JP;
Abstract
A developing device is provided with a first transporting member for transporting a developer containing a toner and a carrier; a second transporting member opposite to the first transporting member to interpose a first spatial region therebetween and opposite to an electrostatic latent image carrying member to interpose a second spatial region therebetween; a first electric field forming device, composed of first and second power sources, for shifting the toner in the developer held onto the first transporting member to the second transporting member; and a second electric field forming device, composed of the second power source, for shifting the toner held onto the second transporting member to an electrostatic latent image on the carrying member. The operation of the second electric field forming device is controlled based on electric currents flowing in the first and second power sources, which are detected by first and second detecting blocks, respectively.