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:
Dec. 27, 1994
Filed:
Aug. 30, 1993
Masaru Iwagaki, Hino, JP;
Konica Corporation, Tokyo, JP;
Abstract
A method for photographically recording an information pattern on a photographic film is disclosed. The method comprises the steps of (1) writing an information pattern at an area outside the picture taking area of a silver halide color photographic film with a red-light having an intensity peak at a wavelength of 620 nm or more emitted from a photoemission diode, (2) processing the color photographic film, and (3) optically reading an image of the pattern formed on the color photographic film with red-light having a intensity peak a wavelength of 620 nm or above. In the method, a red-sensitive silver halide emulsion layer of the color photographic film contains a coupler represented by the following Formula CU; ##STR1## wherein X is a substituent capable of splitting-off upon reaction with the oxidation product of an aromatic primary amine color developing agent; R.sup.1 is an aryl group or a heterocyclic group; R.sup.2 is a an aliphatic group or an aryl group; and the above groups represented by R.sup.1 or R.sup.2 each may have a substituent.