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:
Mar. 25, 2014
Filed:
May. 27, 2011
Natsuko Minegishi, Hachioji, JP;
Naoki Tajima, Sagamihara, JP;
Seiko Itagaki, Hachioji, JP;
Hiroyuki Saito, Tokyo, JP;
Natsuko Minegishi, Hachioji, JP;
Naoki Tajima, Sagamihara, JP;
Seiko Itagaki, Hachioji, JP;
Hiroyuki Saito, Tokyo, JP;
Abstract
A developing device, includes a developer agitating member, an upstream side developing roller, and a downstream side developing roller; wherein a toner in a developer handed over from the upstream side developing roller to the downstream side developing roller has a volume average particle size larger than a volume average particle size of the toner in the developer conveyed by the upstream side developing roller to the facing position between the upstream side developing roller and a photoreceptor drum.