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:
Nov. 06, 2012
Filed:
May. 10, 2010
Takeshi Maeyama, Ikeda, JP;
Toshiya Natsuhara, Takarazuka, JP;
Junya Hirayama, Takarazuka, JP;
Shigeo Uetake, Takatsuki, JP;
Makiko Watanabe, Uji, JP;
Takeshi Maeyama, Ikeda, JP;
Toshiya Natsuhara, Takarazuka, JP;
Junya Hirayama, Takarazuka, JP;
Shigeo Uetake, Takatsuki, JP;
Makiko Watanabe, Uji, JP;
Konica Minolta Business Technologies, Inc., Tokyo, JP;
Abstract
Provided is a development device and an image forming apparatus both using a hybrid development method and capable of forming high quality images without occurrence of development hysteresis (ghost). The nip portion of the toner carrier and the developer carrier is configured as follows: the rotating direction of a toner carrier and a developer carrier are in counter directions; a magnetic pole facing the toner carrier is positioned on the upstream side in the developer carrier rotating direction; and a counter charge generated by the toner supply reaches a toner recovering portion without being considerably attenuated.