Substantially light-insensitive black and white thermographic recording material with improved image tone

US6211116A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Geert Defieuw · Kessel-Lo, BE
• Johan Loccufier · Zwijnaarde, BE
• Yvan Hoogmartens · Wilrijk, BE
• Ingrid Geuens · Emblem, BE

Key dates

• Filing date: Jun 1, 1999
• Grant date: Apr 3, 2001
• Expiry date: Jun 1, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C2200/42
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A substantially light-insensitive black and white thermographic recording material having a support and a thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith and a binder, characterized in that the thermosensitive element contains substantially light-insensitive mixed crystals of two or more silver salts of organic carboxylic acids with one or more carboxylic acid groups; and a recording process therewith.