Process for preparing toner for electrophotography

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

Reexamination Certificate

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C430S109400, C430S137140

Reexamination Certificate

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07579129

ABSTRACT:
The present invention relates to a process for preparing a toner for electrophotography comprising a crystalline polyester and a colorant, wherein the colorant is added in at least one of the neutralizing step, the emulsifying step, and the aggregating step and a process for preparing a toner for electrophotography comprising a crystalline polyester and a colorant, wherein the colorant is added in at least one of the neutralizing and emulsifying step, and the aggregating step. The toner obtained according to the process of the present invention can be suitably used, for example, in development of a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method, or the like.

REFERENCES:
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patent: 6864029 (2005-03-01), Hamano et al.
patent: 2002/0018952 (2002-02-01), Daimon et al.
patent: 2002/0037468 (2002-03-01), Matsushima et al.
patent: 2003/0096184 (2003-05-01), Kawaji et al.
patent: 2004/0209182 (2004-10-01), Kawase
patent: 2006/0127790 (2006-06-01), Matsumura et al.
Patent Abstracts of Japan, JP 2003-167380A, Jun. 13, 2003, (corr. US 6,864,029 B2, and patent family list only).
Patent Abstracts of Japan, JP 2001-305796A, Nov. 2, 2001, (corr. US 6,413,691 B2, and patent family list only).
Patent Abstracts of Japan, JP 10-319639A, Dec. 4, 1998.
Patent Abstracts of Japan, JP 2004-051806A, Feb. 19, 2004.

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