EP 0421278 A3 19910605 - HEAT-SENSITIVE RECORDING SHEET
Title (en)
HEAT-SENSITIVE RECORDING SHEET
Publication
Application
Priority
JP 25538689 A 19890930
Abstract (en)
[origin: CA2023593A1] A heat-sensitive recording sheet of this invention comprises in a heat-sensitive color-developing layer both 4-hydroxy-4'-n-propoxydiphenylsulfone as an organic color-developing agent and a particular fluorane-leuco dye. This sheet provides an intense, clear image, less discoloration, and stable brightness.
IPC 1-7
IPC 8 full level
B41M 5/327 (2006.01); B41M 5/333 (2006.01)
CPC (source: EP US)
B41M 5/3275 (2013.01 - EP US); B41M 5/3336 (2013.01 - EP US)
Citation (search report)
- [A] EP 0131631 A1 19850123 - YOSHITOMI PHARMACEUTICAL [JP]
- [A] GB 2142630 A 19850123 - SHIN NISSO KAKO CO LTD
- [A] GB 2163272 A 19860219 - FUJI PHOTO FILM CO LTD
- [A] PATENT ABSTRACTS OF JAPAN vol. 10, no. 295 (M-523)(2351) 07 Oktober 1986, & JP-A-61 108582 (KANZAKI PAPER MANUFACTURING CO LTD) 27 Mai 1986,
Designated contracting state (EPC)
BE DE FR GB IT SE
DOCDB simple family (publication)
EP 0421278 A2 19910410; EP 0421278 A3 19910605; EP 0421278 B1 19940601; CA 2023593 A1 19910331; CA 2023593 C 20010410; DE 59005917 D1 19940707; JP H03118188 A 19910520; JP H0712751 B2 19950215; US 5066634 A 19911119
DOCDB simple family (application)
EP 90118577 A 19900927; CA 2023593 A 19900820; DE 59005917 T 19900927; JP 25538689 A 19890930; US 58883490 A 19900927