Superior photographic elements including biaxially oriented polyolefin sheets

US6030742A · kind A · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Robert P. Bourdelais · Pittsford, US
• Thaddeus S. Gula · Rochester, US
• Peter T. Aylward · Hilton, US
• Sandra J. Dagan · Churchville, US
• John F. Sawyer · Fairport, US
• Geoffrey Mruk · Rochester, US

Key dates

• Filing date: Nov 23, 1998
• Grant date: Feb 29, 2000
• Expiry date: Nov 23, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C2200/35
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to a photographic element comprising at least one photosensitive silver halide layer comprising at least one dye forming coupler, a support comprising paper having laminated thereto a top and bottom sheet comprising biaxially oriented polyolefin sheets, wherein said photographic element has a surface roughness of between 0.15 and 0.50 mm and an average stiffness of between 150 and 300 millinewtons, a stiffness ratio between machine direction and cross direction of between 0.8 and 1.2 at between 20 and 70% humidity, a maximum curl value of 10 curl units, said photographic element has a back roughness of between 0.30 and 2.00 mm, and has a tear strength of between 300 and 900 N.