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:
Dec. 18, 2012
Filed:
Mar. 25, 2010
Shigeo Uetake, Takatsuki, JP;
Toshiya Natsuhara, Takarazuka, JP;
Junya Hirayama, Takarazuka, JP;
Takeshi Maeyama, Ikeda, JP;
Makiko Watanabe, Uji, JP;
Shigeo Uetake, Takatsuki, JP;
Toshiya Natsuhara, Takarazuka, JP;
Junya Hirayama, Takarazuka, JP;
Takeshi Maeyama, Ikeda, JP;
Makiko Watanabe, Uji, JP;
Konica Minolta Business Technologies, Inc., Tokyo, JP;
Abstract
Provided are a development apparatus and an image forming apparatus which, in a hybrid development apparatus provided with a plurality of toner carriers, a toner supply capability to supply toner to each toner carrier is controlled independent of development electric fields between the toner carriers and an image carrier, whereby each toner carrier is allowed to exhibit a desired development capability, and even in the case of high speed development, a high quality image is provided. The phases, the frequencies, and/or the duty ratios of the alternating current components of the voltages applied to the plurality of the toner carriers are made to be different, whereby the toner supply amount for each toner carrier from the developer carrier is controlled independently of the development electric fields between the toner carriers and the image carrier.