Patent · US Active

Toner supply unit and image forming apparatus

US7542697B2 · kind B2 · utility

5Cited by

128References

20Claims

0Family size

Assignee

RICOH COMPANY, LTD. · JP

Inventors

Junichi Matsumoto · Yokohama, JP
Nobuo Kasahara · Yokohama, JP
Nobuo Iwata · Sagamihara, JP
Satoshi Muramatsu · Tokyo, JP
Tomoyuki Ichikawa · Ota, JP
Yoshio Hattori · Yokohama, JP
Tomotoshi Nakahara · Yokohama, JP
Takaaki Yanagisawa · Yokohama, JP
Masumi Sato · Kawagoe, JP
Kouta Fujimori · Kawagoe, JP
Kazuhisa Sudo · Yokohama, JP

Key dates

Filing date	Feb 1, 2008
Grant date	Jun 2, 2009
Priority date	—
Expiry date	Feb 1, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S222/01
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The toner supply unit is provided with a preventing unit for preventing toner contamination due to toner leakage from that sealing valve. A mouth ring of the toner container is provided with the sealing valve. This valve is opened/closed by removing/inserting a nozzle.

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