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:
Mar. 04, 1997
Filed:
Sep. 21, 1995
Minnesota Mining & Manufacturing, St. Paul, MN (US);
Abstract
The present invention relates to a silver halide photographic material comprising a support and at least one silver halide emulsion layer coated thereon, wherein said silver halide photographic material comprises tabular silver halide grains having an average aspect ratio higher than 3:1 dispersed in highly deionized gelatin, and a pyridinium carbamoyl hardener having the following formula: ##STR1## wherein R.sub.1 and R.sub.2 each independently represents an alkyl group having from 1 to carbon atoms, an aryl group having from 6 to 15 carbon atoms, an aralkyl group having from 7 to 15 carbon atoms, or R.sub.1 and R.sub.2 together form the atoms required to complete a heterocyclic ring, R.sub.3 represents a hydrogen atom, a halogen atom, an alkyl group having from 1 to 10 carbon atoms, an alkoxy group having from 1 to 10 carbon atoms, a carbamoyl group, a ureido group, and R.sub.4 represents an alkylene group having from 1 to 4 carbon atoms or a single chemical bond.