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. 17, 1980
Filed:
Mar. 24, 1977
Tadao Sakai, Minami-ashigara, JP;
Masayoshi Kawai, Fujimiya, JP;
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
A process for forming an optical sound track comprising applying ultraviolet light exposure to an optical sound track area of a multi-layer color photographic light-sensitive material comprising a support, color image-forming silver halide emulsion layers consisting of at least one blue-sensitive silver halide emulsion layer containing a yellow dye-forming coupler, at least one red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, and at least one green-sensitive silver halide emulsion layer containing a magenta dye-forming coupler, and at least one ultraviolet light-sensitive silver halide emulsion layer (sound track forming layer) containing a non-diffusible silver bleach inhibitor and an infrared dye-forming coupler which forms a dye having an absorption maximum at wavelengths longer than 725 nm, wherein at least one layer interposed between the ultraviolet light-sensitive silver halide emulsion layer and the support contains a non-diffusible ultraviolet absorbant.