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:
Jan. 23, 1990
Filed:
Oct. 24, 1988
Applicant:
Inventors:
Tsunehisa Shigetani, Tokyo, JP;
Masahiro Kamiya, Tokyo, JP;
Tatsuo Miyakoda, Tokyo, JP;
Katsuhiko Sakata, Nichinan, JP;
Toshio Inada, Tokyo, JP;
Tatsumi Okada, Tokyo, JP;
Assignee:
Oji Paper Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
264171 ; 26421123 ; 264216 ; 264349 ; 425204 ; 427391 ; 430538 ;
Abstract
A support for photographic paper is produced by a method including the steps of coating one or two surfaces of a substrate sheet with a resinous melt includes a water-proof thermoplastic polymer and a pigment, by a melt-extrude-coating method, and solidifying the coating layer of the resinous melt on the substrate sheet, and wherein at least one melt-kneading procedure is applied to the resinous melt in a melt extruder having a pair of biaxial screws engaged with each other and satisfying the relationship (i)