Appeal No. 1998-0468
Application No. 08/291,825
BACKGROUND
The invention is directed to a binder resin for a toner having (i) a hybrid resin made
of a polyester resin and a vinyl resin as a matrix and (ii) a vinyl resin having a positive
charge functional group as a dispersed domain within the above described matrix. Claim 1
which is representative of the invention is reproduced below:
1. A binder resin for a toner comprising:
(a) a resin (1) which forms a matrix in the toner, said resin (1) being a hybrid
resin of a polyester resin and a vinyl resin; and
(b) a resin (2) which forms a domain dispersed in the matrix formed by the
resin (1), said resin (2) being a vinyl resin having a positive charge functional
group.
As evidence of obviousness, the Examiner relies on the following references:
Niki et al. (Niki) EP 0367265 May 9, 1990
European Patent Application
Kawabe et al. (Kawabe) EP 0479275 Apr. 8, 1992
European Patent Application
THE REJECTION
The Examiner entered the following ground of rejection:
Claims 1-10 are rejected as unpatentable under 35 U.S.C. § 103 over the
combination of Kawabe and Niki. (Examiner’s Answer, page 3).
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