Appeal 2007-1025
Application 10/658,811
We AFFIRM.
Appellants invented a toner for developing electrostatic images
comprising as a main component a binder resin having a copolymer
consisting of a high transition glass temperature monomer, a low transition
glass temperature monomer, and a hydrophilic monomer (Specification 14).
This toner composition is further defined by independent claim 1 as follows:
1. A toner for developing electrostatic images, comprising as a main
component thereof a binder resin having a copolymer consisting of a
combination of a high Tg monomer having a structure represented by the
following structural formula (1) and a glass transition temperature of 50°C
or higher, a low Tg monomer having a structure represented by the
following structural formula (2) and a glass transition temperature of lower
than 50°C, and a hydrophilic monomer having a structure represented by the
following structural formula (3);
Structural Structural Structural
formula (1) formula (2) formula (3)
R1 R2 R3
H2C══╡ H2C══╡ H2C══╡
R1’ R2’ R3’
wherein R1, R2 and R3 independently represent a hydrogen atom, an alkyl
group, an alkylester group, an alkylether group, a perfluoroalkyl group, a
methoxy group, an ethoxy group, a halogen atom, a carbazole group, a
pyrrolidone group, a formyl group, a cyclohexyl group, an alkyl group
having a functional group, or an alkylester group having a functional group,
R1’ and R2’ independently represent an alkyl group, an alkylester group, an
alkylether group, a perfluoroalkyl group, a methoxy group, an ethoxy group,
a halogen atom, a carbazole group, a pyrrolidone group, a formyl group, a
2 According to Appellants the subject matter of claims 6 and 7 are objected
to for being dependent from a rejected base claim (Br. 3).
2
Page: Previous 1 2 3 4 5 6 7 Next
Last modified: September 9, 2013