Invention Grant
- Patent Title: Electrophotographic toner, manufacture of the same, electrostatic latent image developer, and image forming method
- Patent Title (中): 电子照相调色剂,其制造,静电潜像显影剂和成像方法
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Application No.: US10307313Application Date: 2002-12-02
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Publication No.: US06864029B2Publication Date: 2005-03-08
- Inventor: Hirokazu Hamano , Manabu Serizawa , Katsumi Daimon , Yuka Ishihara , Norihito Fukushima , Takashi Imai
- Applicant: Hirokazu Hamano , Manabu Serizawa , Katsumi Daimon , Yuka Ishihara , Norihito Fukushima , Takashi Imai
- Applicant Address: JP Tokyo
- Assignee: Fuji Xerox Co., Ltd.
- Current Assignee: Fuji Xerox Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2001-369598 20011204
- Main IPC: G03G9/08
- IPC: G03G9/08 ; G03G9/087 ; G03G15/20

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 m2/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.
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