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:
Nov. 06, 1990
Filed:
Oct. 19, 1988
Applicant:
Inventors:
Tsunehisa Shigetani, Tokyo, JP;
Masahiro Yamana, Tokyo, JP;
Takao Ayukawa, Nichinan, JP;
Masahiro Kamiya, Tokyo, JP;
Tetsu Uesaka, Pointe Claire, CA;
Assignee:
Oji Paper Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; G03C / ;
U.S. Cl.
CPC ...
428216 ; 428507 ; 428511 ; 428513 ; 430496 ; 430531 ; 430538 ; 2641761 ; 427 44 ;
Abstract
A support sheet for photographic paper having an enhanced resistance to curling, especially twist-curling, comprises a substrate paper sheet composed of a half stratum portion thereof at the face side of a surface on which a photographic emulsion layer will be formed and the other half stratum portion thereof at the back side of the opposite surface, and two polyolefin resin coating layers on the two surfaces of the substrate paper sheet, the substrate paper sheet having a resiliency satisfying the relationships (I) and (II):