USRE36303EExpiredUtility

Ink jet recording sheet

46
Assignee: MITSUBISHI PAPER MILLS LTDPriority: Dec 16, 1992Filed: Jun 6, 1997Granted: Sep 14, 1999
Est. expiryDec 16, 2012(expired)· nominal 20-yr term from priority
Y10T428/31855Y10T428/277Y10T428/31504Y10T428/273B41M 5/5245
46
PatentIndex Score
9
Cited by
11
References
4
Claims

Abstract

The present invention provides an ink jet recording sheet which includes a support and an ink-receiving layer coated on at least one side of the support wherein the ink-receiving layer contains a coating composition containing a quaternary salt of dimethylaminexepichlorohydrin adduct represented by the following formula (1): wherein n shows a polymerization degree and is a positive number in the range of 2 to 2000. The ink-receiving layer may additionally contain a (meth)acrylamide-diallylamine copolymer for further effectively inhibiting the color degradation of the image.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. An ink jet recording sheet which comprises a support .Iadd.of a paper prepared by mixing a wood pulp .Iaddend.and at least one ink-receiving layer coated on one side of the support wherein said ink-receiving layer comprises a coating composition containing . .a pigment,.!. a binder.Iadd., a (meth)acrylamide-diallylamine copolymer .Iaddend.and a quaternary salt of dimethylamine·epichlorohydrin adduct represented by the following formula (1): ##STR3## wherein n indicates the degree of polymerization and is a positive number in the range of 2 to 2000. . . 
     
     
       2.  An ink jet recording sheet according to claim 1, wherein the coating composition of the ink-receiving layer additionally contains a (meth)acrylamide-diallylamine copolymer..!. 
     
     
       3. An ink jet recording sheet according to claim 2, wherein the weight ratio of the quaternary salt/the copolymer is 1/4 to 2/1. 
     
     
       4. An ink jet recording sheet according to claim 1, wherein the support is a paper or a coated paper. .Iadd.5. An ink jet recording sheet according to claim 1, wherein the coating composition of the ink-receiving layer additionally contains a pigment. .Iaddend.

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