Global Patent Index - EP 0943443 A3

EP 0943443 A3 20000405 - Method and apparatus for printing on thermosensitive paper

Title (en)

Method and apparatus for printing on thermosensitive paper

Title (de)

Verfahren und Vorrichtung zum Bedrucken von Thermochromic-Schichten

Title (fr)

Procédé et appareil d'impression sur papier thermosensitif

Publication

EP 0943443 A3 20000405 (DE)

Application

EP 99104836 A 19990311

Priority

DE 19811539 A 19980317

Abstract (en)

[origin: EP0943443A2] The thermochromic layer is heated for erasure. Appropriate set values of time and temperature are used, rendering the layer colorless. Localized further heating, using a different set interval and temperature, bring about color change, which is followed by rapid cooling below erasure temperature, to leave the printed points intact. The process is repeated until all rows of points have been printed. An Independent claim is included for the corresponding thermal printing equipment.

IPC 1-7

B41J 2/365; B41J 2/355; B41J 2/315

IPC 8 full level

B41J 2/315 (2006.01); B41J 2/355 (2006.01); B41J 2/365 (2006.01)

CPC (source: EP)

B41J 2/365 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 0943443 A2 19990922; EP 0943443 A3 20000405; EP 0943443 B1 20050302; DE 19811539 A1 19990923; DE 59911671 D1 20050407

DOCDB simple family (application)

EP 99104836 A 19990311; DE 19811539 A 19980317; DE 59911671 T 19990311