Title:
INK COMPOSITION FOR INVISIBLE RECOGNITION
Document Type and Number:
Japanese Patent JP2001247801
Kind Code:
A
Abstract:
To obtain an ink composition for invisible recognition capable of giving a concealed indication invisible under visible rays which cannot easily be recognized by many and unspecified persons, and further without causing wear of a printing heater element when the printing paper of a heat-sensitive paper type having a concealed indication printed thereon is printed.
The ink composition for invisible recognition comprises a binder component and at least one laser dye selected from the group consisting of 1,3,3,1',3',3'-hexamethylindo-carbocyanine iodide and 5,5'-dichloro-11- diphenylamino-3,3-diethyl-10,12-ethylene-thiatricarbocyanine perchlorate and has a viscosity of ≥200 mP.s.
Inventors:
KUNIMATSU MASAAKI
NAKATSU KATSUTAKA
SUGAWA TETSUO
SHIROTA TSUNEO
NAKATSU KATSUTAKA
SUGAWA TETSUO
SHIROTA TSUNEO
Application Number:
JP2000058580A
Publication Date:
September 14, 2001
Filing Date:
March 03, 2000
Export Citation:
Assignee:
DAINIPPON TORYO KK
International Classes:
C09D11/033; C09D11/10; C09D11/103; C09D11/104; C09D11/106; C09D11/107; C09D11/108; (IPC1-7): C09D11/10
Attorney, Agent or Firm:
Nobuto Watanabe (1 person outside)