Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Process of making developer composition
Reexamination Certificate
2009-01-22
2011-10-04
Le, Hoa (Department: 1721)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Process of making developer composition
C430S137100
Reexamination Certificate
active
08029967
ABSTRACT:
Provided is a method for producing a toner including the steps of: preparing a resin liquid by mixing at least a binder resin made of polyester resin and a colorant with an ester organic solvent represented by the following general formula (1); dispersing the resin liquid in an aqueous medium to form an emulsion; and removing the ester organic solvent from the emulsion to produce a toner, in which the ester organic solvent before the preparation of the resin liquid contains water in an amount of not less than 1% by weight and up to the saturation solubility at 25° C. to the ester organic solvent:(in which R1 is a hydrogen atom or a methyl group, and R2 is an alkyl group having 1 to 4 carbon atoms).
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Hattori Tomoaki
Ikami Jun
Kawamura Masateru
Uno Takanori
Banner & Witcoff , Ltd.
Brother Kogyo Kabushiki Kaisha
Le Hoa
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