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:
Mar. 08, 2005
Filed:
Dec. 02, 2002
Hirokazu Hamano, Minamiashigara, JP;
Manabu Serizawa, Minamiashigara, JP;
Katsumi Daimon, Minamiashigara, JP;
Yuka Ishihara, Minamiashigara, JP;
Norihito Fukushima, Minamiashigara, JP;
Takashi Imai, Minamiashigara, JP;
Hirokazu Hamano, Minamiashigara, JP;
Manabu Serizawa, Minamiashigara, JP;
Katsumi Daimon, Minamiashigara, JP;
Yuka Ishihara, Minamiashigara, JP;
Norihito Fukushima, Minamiashigara, JP;
Takashi Imai, Minamiashigara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
The present invention uses a crystalline resin as a binding resin and provides a toner insuring excellent storability of a resulting image, a method of manufacturing the toner, an electrostatically charged image developer containing the toner, and an image forming method. In the electrophotographic toner containing toner mother particles comprising at least a binding resin and a colorant, a main component of said binding resin comprises a crystalline resin with a melting point in the range from 50 to 120° C. and an average volume particle size in the range from 3.0 to 7.5 μm, while an average value of the BET specific areas of said toner mother particles is in the range from 0.6 to 3.0 m/g. The electrophotographic toner manufacturing method comprises the steps of coalescing or associating the binding resin particles with colorant particles, and cooling the aggregated particles at the rate of at least 1° C. per minute or more to a temperature below the crystallizing temperature of the binding resin to generate toner particles.