Color paper with improved wet abrasion sensitivity

US5962210A · kind A · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Paul T. Hahm · Hilton, US
• Alberto M. Martinez · Rochester, US
• Melvin M. Kestner · Hilton, US
• Eric L. Bell · Webster, US
• Walter H. Isaac · Penfield, US

Key dates

• Filing date: Jan 12, 1998
• Grant date: Oct 5, 1999
• Expiry date: Jan 12, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C2200/40
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to a photographic emulsion comprising silver iodochloride grains, said grains further comprising iridium, said grains chemically sensitized with gold in an amount of between 120 and 200 mg gold per silver mole and sulfur in an amount between 0.1 and 20 mg sulfur per silver mole, 1-(3-acetamidophenyl)-5-mercaptotetrazole, 1-phenyl-5-mercaptotetrazole, and a disulfide compound represented by the following formula: ##STR1## wherein X is independently --O--, --NH-- or --NR--, where R is a substituent; PA0 m and r are independently 0, 1 or 2; PA0 X is --H or a cationic species; PA0 Ar is an aromatic group; and PA0 L is a linking group, where p is 0 or 1.