Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce color reproduction
Patent
1996-02-02
1998-05-26
Dote, Janis L.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
To produce color reproduction
430109, 430110, 430111, 430903, G03G 1301, G03G 9087, G03G 9097
Patent
active
057562440
ABSTRACT:
The toner for full-color electrophotography usable for a fixing process by a heat roller, wherein a releasing oil is not applied on a surface of the heat roller, includes at least (a) a binder resin having as a main component a linear polyester obtainable using one or more monomers selected from the group consisting of saturated or unsaturated, aliphatic dicarboxylic acids, acid anhydrides thereof, and lower alkyl esters thereof as an acid component, provided that the saturated aliphatic dicarboxylic acids have carbon atoms of not less than 3, and that the unsaturated aliphatic dicarboxylic acids have carbon atoms of not less than 5, the linear polyester having a softening point of from 90.degree. to 120.degree. C. determined by "koka" type flow tester; (b) a releasing agent comprising carnauba wax; and (c) a coloring agent. The method for forming fixed images for full-color electrophotography includes the steps of forming an unfixed image by using three or four kinds of toners on a recording medium in single or more toner layers wherein said toners include at least one toner for full-color electrophotography of the present invention; and fixing by heat and pressure the unfixed image using a heat roller without a device for applying a releasing oil.
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Omatsu Shinichiro
Semura Tetsuhiro
Dote Janis L.
Kao Corporation
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