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:
Apr. 07, 1998
Filed:
Jul. 10, 1997
Fumio Kawamoto, Minami-ashigara, JP;
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
There is disclosed a method of manufacturing a photographic polyester film, comprising forming an unstretched film controlling; each of the temperature of the inlet of a melt extruder, at a temperature in the range from 'the melting point of the polymer (Tm)'-10.degree. C. to the Tm+15.degree. C.; the temperature of the central part of a screw, at a temperature in the range from the Tm to the Tm+30.degree. C.; and the temperature of the outlet thereof, at a temperature in the range from the Tm+10.degree. C. to the Tm+35.degree. C., followed by biaxial stretching and heat-setting, and a photographic support manufactured by the method. The thus obtained photographic polyester support excels in photographic properties, adhesiveness, and mechanical strength, and that moreover hardly causes a core set curl and fog formation.