Title:
INVISIBLE INK COMPOSITION, INVISIBLE PRINTED MATTER, AND INVISIBLE PRINTING APPLICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/1992/020748
Kind Code:
A1
Abstract:
An invisible ink composition (a) a fluorescent pigment not having substantially an absorption region in a visible light region and (b) a vehicle which is transparent to both of the light of a wavelength exciting the fluorescent pigment and the light emitted from the fluorescent pigment. The invention relates also to printed matters obtained using this invisible ink composition. Furthermore, the present invention relates to an application system utilizing the printed matters.
Inventors:
TAJIMA SHINJI (JP)
KITAMI KOHJI (JP)
KITAMI KOHJI (JP)
Application Number:
PCT/JP1992/000640
Publication Date:
November 26, 1992
Filing Date:
May 18, 1992
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD (JP)
International Classes:
B41M3/14; C09D11/00; G06K7/12; G06K19/08; G09C5/00; (IPC1-7): B41M3/06; C09D11/00; G06K7/10; G09C5/00
Foreign References:
| JPS5280906A | 1977-07-07 | |||
| JPS52138199A | 1977-11-18 | |||
| JPS57142386A | 1982-09-03 | |||
| JPS646085A | 1989-01-10 | |||
| JPH0258190A | 1990-02-27 | |||
| JPH03166276A | 1991-07-18 | |||
| JPH03192169A | 1991-08-22 |
Attorney, Agent or Firm:
Sato, Kazuo (Room 323 Fuji Bldg., 2-3, Marunouchi 3-chom, Chiyoda-ku Tokyo 100, JP)
Download PDF:
Previous Patent: POLYMERIC COMPOSITIONS HAVING BOUND ANTIBODIES
Next Patent: WATER-BASED RECORDING INK
Next Patent: WATER-BASED RECORDING INK