Patent · US Active

Developing device and image forming apparatus

US9104142B2 · kind B2 · utility

1Cited by

8References

9Claims

0Family size

Assignee

Canon Kabushiki Kaisha · JP

Inventors

Kenta Kubo · Tokyo, JP
Tatsuya Tada · Yokohama, JP
Satoru Yamanaka · Kawasaki, JP
Hideaki Okamoto · Tokyo, JP

Key dates

Filing date	Dec 5, 2013
Grant date	Aug 11, 2015
Priority date	—
Expiry date	Dec 5, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG03G15/0928
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The developing device includes a developing container that stores a developer including a non-magnetic toner and a magnetic carrier, a toner bearing member that bears the toner and conveys the toner to a developing portion and a separating portion wherein a surface of the toner bearing member includes a plurality of recess structures. A percentage of the recess structures per unit area in a toner bearing region of the toner bearing member is equal to or larger than 55%.

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