Patent · US Active

Developing device and image forming apparatus

US8744320B2 · kind B2 · utility

4Cited by

3References

4Claims

0Family size

Assignee

SHARP KABUSHIKI KAISHA · JP

Inventors

Koichi Mihara · Osaka, JP
Takafumi Nagai · Osaka, JP

Key dates

Filing date	Dec 14, 2011
Grant date	Jun 3, 2014
Priority date	—
Expiry date	Sep 2, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG03G2215/0841
WIPO fieldOptics
WIPO sectorInstruments

Abstract

In a developing device including a developer tank and a developing roller, an internal space of the developer tank is divided by a partition wall into a first conveying path, a second conveying path, a communication path and a pumping path. In the pumping path, there is disposed a developer pumping section including a pumping spiral blade, a pumping rotation shaft member, and a pumping gear. A developer in the pumping path is pumped up by the developer pumping section, so that a part of the developer is moved to a side of the first conveying path while another part of the developer is moved to a side of the second conveying path.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.