Patent · US Expired

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

US6313065A · kind A · utility

6Cited by

3References

8Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Bartholomeus Horsten · Rumst, BE
Guy Denis Jansen · Borsbeek, BE
Peter Slabbinck · Knokke, BE

Key dates

Filing date	Nov 30, 1999
Grant date	Nov 6, 2001
Priority date	—
Expiry date	Nov 30, 2019

Classification

Technology area (CPC G)Physics
CPC primaryG03C1/49863
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element provided with a protective layer, the thermosensitive element containing a substantially light-insensitive organic silver salt, a 1,2-dihydroxy-benzene derivative in thermal working relationship therewith and a first polymer having active hydrogen atoms at least part of which has reacted with a first polyisocyanate selected from the group consisting of: hexamethylene diisocyanate, toluene diisocyanate, diphenylmethane diisocyanat, naphthylene diisocyanate and triphenylmethane-p,p',p"-trityl triisocyanate; and the protective layer being exclusive of fluorine-containing compounds; and a thermographic recording process therefor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.