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:
Oct. 30, 2007
Filed:
Mar. 08, 2004
Hidekazu Yaguchi, Minamiashigara, JP;
Yasuo Matsumura, Minamiashigara, JP;
Kazuhiko Yanagida, Minamiashigara, JP;
Manabu Serizawa, Minamiashigara, JP;
Tsutomu Kubo, Minamiashigara, JP;
Shigeru Seitoku, Minamiashigara, JP;
Hidekazu Yaguchi, Minamiashigara, JP;
Yasuo Matsumura, Minamiashigara, JP;
Kazuhiko Yanagida, Minamiashigara, JP;
Manabu Serizawa, Minamiashigara, JP;
Tsutomu Kubo, Minamiashigara, JP;
Shigeru Seitoku, Minamiashigara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A magenta toner for developing electrostatic images provided which contains a binder resin and a colorant, wherein the colorant includes a mixed crystal of two or more colorants and when a solid patch is fixed on art paper complying with the ISO standard by using this toner, a resulting fixed image color satisfies at least one of the following formulae (b*)<0.85 (a*)−67.92; and (b*)>−7.94(a*)+591.85. The color difference ΔE between the color of the fixed image and the color characterized by L*: 46.6, a*: 75.1 and b*: −4.4 is preferably less than 6. The colorant is preferably a mixed crystal of a quinacridone colorant and a monoazo colorant. Moreover, the invention provides a method for producing the magenta toner, a developer containing the magenta toner, and an image-forming method using the magenta toner.