EP 0901040 A1 19990310 - Substiantially light-insensitive thermographic recording material with improved stability and image-tone
Title (en)
Substiantially light-insensitive thermographic recording material with improved stability and image-tone
Title (de)
Im wesentlichen lichtunempfindliches thermographisches Aufzeichnungsmaterial mit erhöhter Stabilität und verbessertem Bildton
Title (fr)
Matériau d'enregistrement thermographique pratiquement insensible à la lumière ayant une meilleure stabilité et un ton de l'image amélioré
Publication
Application
Priority
- EP 98202542 A 19980729
- EP 97202710 A 19970903
Abstract (en)
A substantially light-insensitive monosheet recording material comprising 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 further contains an unsaturated carbocyclic or heterocyclic stabilizer compound substituted with a -SA group where A is hydrogen, a counterion to compensate the negative charge of the thiolate group or a group forming a symmetrical or an asymmetrical disulfide and the recording material is capable of producing prints with a numerical gradation value defined as the quotient of the fraction (2.5 - 0.1)/(E2.5 - E0.1) greater than 2.3 , where E2.5 is the energy in Joule applied in a dot area of 87 mu m x 87 mu m of the imaging layer that produces an optical density value of 2.5, and E0.1 is the energy in Joule applied in a dot area of the imaging layer material that produces an optical density value of 0.1.
IPC 1-7
IPC 8 full level
G03C 1/498 (2006.01)
CPC (source: EP)
G03C 1/49845 (2013.01); G03C 1/4989 (2013.01); G03C 1/34 (2013.01); G03C 1/346 (2013.01); G03C 1/49872 (2013.01); G03C 1/7614 (2013.01); G03C 2001/7635 (2013.01); G03C 2200/33 (2013.01); G03C 2200/40 (2013.01)
Citation (search report)
- [DXY] WO 9416361 A1 19940721 - LABELON CORP [US]
- [Y] US 3997346 A 19761214 - MASUDA TAKAO, et al
- [A] EP 0687572 A1 19951220 - AGFA GEVAERT NV [BE]
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 98202542 A 19980729