The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 1989
Filed:
Mar. 10, 1987
Yutaka Kojima, Tokyo, JP;
Takashi Omori, Tokyo, JP;
Jujo Paper Co., Ltd., Tokyo, JP;
Abstract
This invention relates to a recording sheet for ink jet printers which gives an image by the use of an aqueous ink containing a water-soluble dye, coated or impregnated with either of or a mixture of two kinds of water-soluble polymers: one whose polymeric unit is alkylquaternaryammonium (meth)acrylate and the other whose polymer unit is alkylquaternaryammonium (meth)acrylamide, said water-soluble polymers containing not less than 50 mol % of a monomer represented by the following formula (1), ##STR1## where R represents hydrogen or methyl group; n is an integer from 1 to 3 inclusive; R.sub.1, R.sub.2 and R.sub.3 represent hydrogen or the same or different aliphatic alkyl group with 1 to 4 carbon atoms; X.sup..crclbar. represents an anion such as halogen ion, sulfate ion, alkylsulfate ion, alkyl- or aryl-sulfonate ion and acetate ion and Y represents oxygen or imino group.