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:
Jun. 28, 2011
Filed:
Apr. 04, 2008
Development apparatus, image forming apparatus and image forming method for consuming degraded toner
Yuusuke Okuno, Toyokawa, JP;
Tomohiro Kato, Okazaki, JP;
Tomo Kitada, Toyokawa, JP;
Toru Hayase, Toyokawa, JP;
Yuusuke Okuno, Toyokawa, JP;
Tomohiro Kato, Okazaki, JP;
Tomo Kitada, Toyokawa, JP;
Toru Hayase, Toyokawa, JP;
Konica Minolta Business Technologies, Inc., Chiyoda-Ku, Tokyo, JP;
Abstract
The development apparatus that develops an electrostatic latent image formed on an image carrier comprises: a developer roller operable to carry toner on a circumferential surface thereof and develop the electrostatic latent image using the toner; a supply roller operable to perform toner supply to the developer roller; a voltage applier operable to apply a bias voltage Vto the developer roller and apply a bias voltage Vto the supply roller; and a controller operable to control the voltage applier in a toner compulsive consumption mode so that a value obtained by subtracting an average Sof the bias voltage Vper unit time from an average Sof the bias voltage Vper unit time indicates the same polarity as a normal charging polarity of the toner. Here, the toner compulsive consumption mode performs development to compulsively consume the toner carried on the circumferential surface of the developer roller.