EP 2722190 B1 20151216 - Optimized undercoat for thermal recording material
Title (en)
Optimized undercoat for thermal recording material
Title (de)
Optimierte Grundierung für Wärmeaufzeichnungsmaterial
Title (fr)
Sous-couche optimisée pour matériau d'enregistrement thermique
Publication
Application
Priority
EP 12306220 A 20121005
Abstract (en)
[origin: EP2722190A1] The present invention relates to a thermal recording material comprising: - a base layer; - one or more undercoat layers which is/are laid down on the base layer, wherein the undercoat layer(s) contain(s) a water-soluble resin and hollow particles; - a thermo-sensitive coloring layer which is laid down on the uppermost undercoat layer, on the opposite side with respect to the base layer; and - one or more protective layers which is/are laid down on the thermo-sensitive coloring layer, on the opposite side with respect to the undercoat layer(s); wherein the water soluble resin is a polyvinyl alcohol with a degree of the polymerisation which is at least 400 and at most 1000, and wherein the ratio by mass of the water-soluble resin in the dried state to the hollow particles in the dried state is at least 50% and at most 200%.
IPC 8 full level
B41M 5/44 (2006.01); B41M 5/323 (2006.01); B41M 5/333 (2006.01)
CPC (source: EP)
B41M 5/44 (2013.01); B41M 5/323 (2013.01); B41M 5/333 (2013.01); B41M 2205/04 (2013.01); B41M 2205/38 (2013.01); B41M 2205/40 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 12306220 A 20121005