EP 0688680 B1 19990317 - Transparent thermal recording medium
Title (en)
Transparent thermal recording medium
Title (de)
Transparentes Thermographie-Medium
Title (fr)
Elément transparent pour enregistrement thermique
Publication
Application
Priority
- JP 15148194 A 19940609
- JP 23432694 A 19940902
- JP 33185594 A 19941209
- US 35590394 A 19941214
Abstract (en)
[origin: EP0688680A1] This invention provides a transparent thermal recording medium comprising: a thermal recording layer, which is provided on a transparent layer and comprises an electron-donating chromophoric compound, an electron-accepting compound and binder resin; and a further-provided protective layer having an approximately equal refractive index to the refractive index of the thermal recording layer, wherein the binder resin is a compound having a group selected from a hydroxyl group and a carboxyl group. The transparent thermal recording medium can be effectively used for a block copy film, on which an image is formed, for plate-making, particularly, in photogravure, offset printing and screen process printing, because the transparent thermal recording medium has a contrast of light transmission factors between a color-imaging portion and a non-imaging portion, in which the contrast is not less than 50% at a wavelength ranging from 370 nm to 450 nm.
IPC 1-7
IPC 8 full level
B41M 5/327 (2006.01); B41M 5/333 (2006.01); B41M 5/337 (2006.01); B41M 5/42 (2006.01); B41M 5/30 (2006.01)
CPC (source: EP)
B41M 5/327 (2013.01); B41M 5/3335 (2013.01); B41M 5/3372 (2013.01); B41M 5/42 (2013.01)
Citation (examination)
- JP H05104859 A 19930427 - RICOH KK
- US 5380693 A 19950110 - GOTO HIROSHI [JP]
- JP H05345475 A 19931227 - NEW OJI PAPER CO LTD
- JP H0679970 A 19940322 - RICOH KK [JP]
- JP H08224962 A 19960903 - RICOH KK
- GB 1182743 A 19700304 - FUJI PHOTO FILM CO LTD [JP]
- Journal of Imaging Technology-Vol.16, No.6,Dec. 1990, pages 234 to 237
- Polymer Handbook, 2nd Edition, 1975, page III-242
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0688680 A1 19951227; EP 0688680 B1 19990317; EP 0688680 B2 20020807; DE 69508306 D1 19990422; DE 69508306 T2 19990930; DE 69508306 T3 20030306
DOCDB simple family (application)
EP 95108850 A 19950608; DE 69508306 T 19950608