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. 13, 1997
Filed:
Nov. 16, 1995
Applicant:
Inventor:
Fumio Kawamoto, Minami-ashigara, JP;
Assignee:
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
4304951 ; 430501 ; 430533 ; 430930 ; 430935 ; 430939 ; 264234 ;
Abstract
There is disclosed a process for heat treatment of a photographic polyester film support, comprising steps of winding a biaxially oriented polyester film into a roll so that the thickness of a gas layer lying between the film layers continually becomes 1.5 .mu.m to 10 .mu.m, and then subjecting the roll of the polyester film to heat treatment at a temperature between 50.degree. C. and the glass transition temperature of the polyester. According to the above process, a photographic polyester film support, which is excellent in flatness of the film and does not cause unevenness of coating, can be provided.