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.
Patent No.:
Date of Patent:
Nov. 21, 2006
Filed:
Mar. 05, 2004
Takayuki Itakura, Shizuoka, JP;
Yoshinobu Baba, Kanagawa, JP;
Yuko Sato, Shizuoka, JP;
Nobuyoshi Sugahara, Shizuoka, JP;
Kazuo Terauchi, Shizuoka, JP;
Takaaki Kotaki, Shizuoka, JP;
Hirohide Tanikawa, Shizuoka, JP;
Takayuki Itakura, Shizuoka, JP;
Yoshinobu Baba, Kanagawa, JP;
Yuko Sato, Shizuoka, JP;
Nobuyoshi Sugahara, Shizuoka, JP;
Kazuo Terauchi, Shizuoka, JP;
Takaaki Kotaki, Shizuoka, JP;
Hirohide Tanikawa, Shizuoka, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a cyan toner including: one or plural heat-absorption peaks in a temperature range of 30 to 200° C. in a heat-absorption curve obtained by using a differential scanning calorimeter; a maximal value of a maximum heat-absorption peak temperature in the range of 65 to 150° C.; and a reflectance of 45 to 80% at a wavelength of 500 nm, a reflectance of 5 to 30% at a wavelength of 600 nm, and a brightness L* of 45 to 75, when measured in a powder form by spectroscopic analysis. The present invention thus provides a cyan toner capable of forming an image with reduced graininess and roughness from a low-density region to a high-density region and ensured a sufficient fixing temperature region, and a method for forming an image using the cyan toner.