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.

Date of Patent:
Nov. 01, 1994

Filed:

Dec. 20, 1993
Applicant:
Inventors:

Atsushi Kato, Fujinomiya, JP;

Sei Kawahara, Fujinomiya, JP;

Yasuo Iwasaki, Fujinomiya, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; B32B / ;
U.S. Cl.
CPC ...
430538 ; 430532 ; 430537 ; 428328 ; 428330 ; 428332 ; 428511 ;
Abstract

Disclosed is a photographic printing paper support comprising a waterproof substrate constituted of raw paper and polyolefin resin coats covering the both surfaces thereof, which further has on the back side of the substrate a backing layer containing at least (a) colloidal silica, (b) an aqueous dispersion of a styrene-acrylate copolymer prepared by the polymerization in the presence of a water-soluble high-molecular compound, (c) at least one substance selected from a group consisting of carboxyl or sulfo group-containing water-soluble high-molecular compounds, the metal salts thereof and hydrophilic organic high-molecular colloidal substances and (d) an aqueous dispersion of a polyolefin resin having a melting point below 100.degree.C.


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