Toner for electrostatic-image development and toner cartridge containing the same therein

Patent metadata

Field	Value
Publication number	US-9201342-B2
Application number	US-201414500384-A
Country	US
Kind code	B2
Filing date	Sep 29, 2014
Priority date	Mar 29, 2012
Publication date	Dec 1, 2015
Grant date	Dec 1, 2015

Abstract

The object of the invention is to provide a toner for electrostatic-image development which imparts excellent image quality and a toner cartridge employing the toner. The invention relates to a toner for electrostatic-image development, which satisfies the following requirements (1) and (2): (1) the toner has an average transporting property of 2.9 to 15.1 mg/sec; and (2) the product of the BET specific surface area (m 2 /g) and volume-average particle diameter (μm) of the toner is 7.7×10 −6 to 11.0×10 −6 (m 3 /g).

First claim

The invention claimed is:

1. A toner cartridge comprising:
a toner for electrostatic-image development, satisfying the following requirements (1) and (2);
a developing roller for supporting the toner for electrostatic-image development thereon;
a charging blade disposed on the upper side of the developing roller; and
a retaining blade disposed on the lower side of the developing roller so as to face the developing roller at a predetermined distance:
(1) the toner has an av…

Assignees

• Mitsubishi Chem Corp

Inventors

• Hirasawa Hirohiko

Classifications

• G03G15/0865 Primary

  Physics · mapped topic

• G03G9/0823

  Physics · mapped topic

• G03G9/0819

  Physics · mapped topic

• G03G15/0812 Primary

  Physics · mapped topic

• G03G9/0821

  Physics · mapped topic