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:
Jan. 04, 2005

Filed:

Jun. 20, 2001
Applicants:

Yasuo Matsumura, Minamiashigara, JP;

Takao Ishiyama, Minamiashigara, JP;

Hiroshi Takano, Minamiashigara, JP;

Masaaki Suwabe, Minamiashigara, JP;

Shuji Sato, Minamiashigara, JP;

Inventors:

Yasuo Matsumura, Minamiashigara, JP;

Takao Ishiyama, Minamiashigara, JP;

Hiroshi Takano, Minamiashigara, JP;

Masaaki Suwabe, Minamiashigara, JP;

Shuji Sato, Minamiashigara, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9097 ; G03G 908 ;
U.S. Cl.
CPC ...
Abstract

A toner for developing an electrostatic image, a process for producing the same, a developer for developing an electrostatic image and a process for forming an image are disclosed. The toner contains a resin, a colorant and a releasing agent, in which the toner has protrusions having a height of about from 0.05 to 2 μm, a part of the protrusions encompasses the releasing agent, and a proportion of elements derived from the releasing agent is about 10% by atom or less based on elements on a surface of the toner that is quantitatively determined by X-ray photoelectron spectroscopy.


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