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:
Apr. 25, 2006

Filed:

Jul. 28, 2003
Applicants:

Manabu Serizawa, Minamiashigara, JP;

Kazuhiko Yanagida, Minamiashigara, JP;

Hidekazu Yaguchi, Minamiashigara, JP;

Takahisa Fujii, Minamiashigara, JP;

Emi Takahashi, Minamiashigara, JP;

Yasuo Matsumura, Minamiashigara, JP;

Inventors:

Manabu Serizawa, Minamiashigara, JP;

Kazuhiko Yanagida, Minamiashigara, JP;

Hidekazu Yaguchi, Minamiashigara, JP;

Takahisa Fujii, Minamiashigara, JP;

Emi Takahashi, Minamiashigara, JP;

Yasuo Matsumura, Minamiashigara, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/087 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention provides a toner, comprising a binder resin and a colorant, and having a plurality of absorption peaks in a wave number range of 400 to 4,000 cmin an infrared absorption spectrum, wherein among the plurality of absorption peaks, a maximum absorption peak appears at wave number ranging from 500 to 800 cmand, given that the intensity of the maximum absorption peak is P1 and that the intensity of a second greatest absorption peak is P2, P1 and P2 satisfy the following equation (1), a developer comprising this toner, an image forming method using this toner, and an image forming apparatus using this toner.  Equation (1)


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