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:
Apr. 13, 2010
Filed:
Feb. 26, 2007
Masahiko Matsuura, Suita, JP;
Toshiya Natsuhara, Takarazuka, JP;
Junya Hirayama, Takarazuka, JP;
Takeshi Maeyama, Kawanishi, JP;
Shigeo Uetake, Takatsuki, JP;
Masahiko Matsuura, Suita, JP;
Toshiya Natsuhara, Takarazuka, JP;
Junya Hirayama, Takarazuka, JP;
Takeshi Maeyama, Kawanishi, JP;
Shigeo Uetake, Takatsuki, JP;
Konica Minolta Business Technologies, Inc., Tokyo, JP;
Abstract
In a development apparatus of the hybrid method using a component developer, a development apparatus and a development method are provided that prevent the reduction of density or the occurrence of residual images (ghost images) and can carry out good image forming over a long period of time. A development apparatus has the feature that the surfaces of the toner supporting member and the developer supporting member move in a mutually opposite direction at the part where they are opposite to each others. The development apparatus further employs an electric field in the closest part applied in a direction to recover the toner from the toner supporting member to the developing supporting member, wherein the magnitude of the electric field is in the range from 2.5×10V/m to 5×10V/m. The developer of the development apparatus is such that its share (PD) in the space of the closest part of the opposing portion satisfies the following relationship: 0.09≦PD≦650×Dss.