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.

Date of Patent:
Mar. 28, 2006

Filed:

Sep. 18, 2003
Applicants:

Takao Yamanouchi, Hachioji, JP;

Masafumi Uchida, Hachioji, JP;

Masahiro Anno, Sakai, JP;

Chikara Tsutsui, Nishinomiya, JP;

Takeshi Arai, Akashi, JP;

Inventors:

Takao Yamanouchi, Hachioji, JP;

Masafumi Uchida, Hachioji, JP;

Masahiro Anno, Sakai, JP;

Chikara Tsutsui, Nishinomiya, JP;

Takeshi Arai, Akashi, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A toner used for an image forming method comprises steps of: limiting an amount of toner on a surface of a toner carrier by allowing a toner layer limiting member to be pressed to the surface of the toner carrier; and developing an electrostatic latent image formed on an electrostatic latent image carrier using the toner carried and transferred by the toner carrier, based on a non-magnetic single component development system, wherein the toner comprises toner particles having a volume average particle diameter of 3 to 9 μm, an arithmetic mean value of shape factor of 1.1 to 1.5, a coefficient of variation of shape factor of 16% or less, a ratio of rounded toner particle of 50% by number or more and a coefficient of variation of number particle diameter distribution of 26% or less, and a conveyance index of 2.0 to 10.0.


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