Appeal No. 2001-2465
Application No. 09/167,878
The subject matter on appeal relates to an ink-jet printing
ink composition comprising a colorant, a carrier medium, and a
cationic, water-soluble resin composition comprising specific
first, second and third monomers. Further details of this appealed
subject matter are set forth in representative independent claim 1
which reads as follows:
1. An ink-jet printing ink composition comprising a colorant,
a carrier medium, and a cationic, water-soluble resin composition
comprising a first monomer, a second monomer, and a third
monomer wherein the first monomer is N-vinylpyrrolidinone,
the second monomer is selected from the group consisting of
N-methylolacrylamide, N-methylolmethacrylamide, N-
isobutoxymethylacrylamide, and mixtures thereof, and the third
monomer is represented by the formula:
CH2=C(R)COY(CH2)nN+R’R”R’”X-
wherein R is a hydrogen atom or a methyl group; Y is O or NH; n is
an integer from 1 to about 4; R’, R”, and R’” are hydrogen or alkyl
or aralkyl groups independently containing from 1 to about 18
carbon atoms; and X is an anion such as chloride, bromide,
tosylate, or alkylsulfate.
The references set forth below are relied upon by the Examiner
as evidence of obviousness:
Maslanka et al. (Maslanka) 4,235,982 Nov. 25, 1980
Mitchell et al. (Mitchell) 5,026,427 June 25, 1991
Nakashima et al. (Nakashima) 5,126,392 June 30, 1992
Bermes et al. (Bermes) 5,431,723 July 11, 1995
Kashiwazaki et al. (Kashiwazaki) 5,439,514 Aug. 8, 1995
Kappele et al. (Kappele) 5,656,071 Aug. 12, 1997
Sano et al. (Sano) 5,690,723 Nov. 25, 1997
Lin 5,851,274 Dec. 22, 1998
Nagasawa et al. (Nagasawa) 5,861,447 Jan. 19, 1999
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