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:
Jun. 08, 1993
Filed:
May. 08, 1992
Nobuo Sugiyama, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A photographic film cassette has light-trapping members adhered to the upper and lower inner surfaces of a port portion of a plastic-molded cassette shell by a heat-activated type crystallization delay adhesive. The adhesive has properties that its stickiness is revealed by heat application and maintained for one second or more at temperatures equal to a heat-distortion temperature of the cassette shell, and its crystallization is advanced in a gradual manner. The adhesive is applied to the back surfaces of the light-trapping members. After the light-trapping members are heated, they are cooled down to a temperature equal to the heat-distortion temperature of the plastic cassette shell and attached to the port portion.