Title:
MULTI-COLOR COLORING LASER MARKING-USE CHROMATIC COLOR COLORANT, MULTI-COLOR COLORING LASER MARKING-USE COMPOSITION AND MOLDING CONTAINING IT, MULTI-COLOR MARKING-CARRYING MOLDING AND LASER MARKING METHOD
Document Type and Number:
WIPO Patent Application WO/2005/068557
Kind Code:
A1
Abstract:
A multi-color coloring laser marking-use chromatic color colorant capable of marking in at least two different tones by applying at least two laser beams having different energies to the different positions on a molding, and a multi-color coloring laser marking-use polymer composition capable of forming, for example, a colorant-derived chromatic color marking and a white marking on the surface of a molding giving a black or dark-color ground color, a laser marking method, and a multi-color marking-carrying molding or the like. The chromatic color colorant has a heating peak in a 360-590°C range by a differential thermal analysis. The laser marking-use composition includes a chromatic color colorant, a black substance (such as carbon black) that perishes itself or discolors when exposed to a laser beam, and a polymer, the contents of the chromatic color colorant and the black substance being respectively 0.001-3 pts. mass and 0.01-2 pts. mass per 100 pts. mass of the polymer.
Inventors:
KAWAKAMI KAZUYOSHI (JP)
KURIMOTO HIDEYUKI (JP)
SHIMIZU AKIRA (JP)
KOSAKAI TOSHIYUKI (JP)
ISHIDA MIO (JP)
KURIMOTO HIDEYUKI (JP)
SHIMIZU AKIRA (JP)
KOSAKAI TOSHIYUKI (JP)
ISHIDA MIO (JP)
Application Number:
PCT/JP2005/000312
Publication Date:
July 28, 2005
Filing Date:
January 13, 2005
Export Citation:
Assignee:
TECHNO POLYMER CO LTD (JP)
KAWAKAMI KAZUYOSHI (JP)
KURIMOTO HIDEYUKI (JP)
SHIMIZU AKIRA (JP)
KOSAKAI TOSHIYUKI (JP)
ISHIDA MIO (JP)
KAWAKAMI KAZUYOSHI (JP)
KURIMOTO HIDEYUKI (JP)
SHIMIZU AKIRA (JP)
KOSAKAI TOSHIYUKI (JP)
ISHIDA MIO (JP)
International Classes:
B41M5/26; C08J7/00; C08K3/00; C08K5/00; C08L101/00; C09B67/00; C09B69/00; (IPC1-7): C08L101/00; C08J7/00; C08K3/00; C08K5/00
Foreign References:
JP2002535422A | 2002-10-22 | |||
JPH0971726A | 1997-03-18 | |||
JPH11158389A | 1999-06-15 | |||
EP0190997A2 | 1986-08-13 |
Other References:
See also references of EP 1705226A4
Attorney, Agent or Firm:
Kojima, Seiji (7-26 Jingu 3-chome, Atsuta-k, Nagoya-shi Aichi 31, JP)
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