Title:
PAINT FOR LASER MARKING AND LASER MARKING METHOD USING THIS
Document Type and Number:
WIPO Patent Application WO/2018/193680
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a laser marking paint which enables multicolor laser printing and which has easy storage. In order to address this problem, this laser marking paint marking is characterized by containing multiple temperature sensitive materials that change color when heated by being irradiated with a laser beam, and a solvent, and in that the multiple temperature sensitive materials include at least a leuco dye and a developer enclosed in microcapsules, exhibit hysteresis properties in the color density-temperature curve, and the multiple temperature sensitive materials have a different color tone before and after changing colors and different thermal energies necessary for changing colors.
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Inventors:
AIDA KOHHEI (JP)
MORI SHUNSUKE (JP)
KAWASAKI MASAHIRO (JP)
ARAYA KOTARO (JP)
SASAKI HIROSHI (JP)
SOUMA KENICHI (JP)
MORI SHUNSUKE (JP)
KAWASAKI MASAHIRO (JP)
ARAYA KOTARO (JP)
SASAKI HIROSHI (JP)
SOUMA KENICHI (JP)
Application Number:
PCT/JP2018/002308
Publication Date:
October 25, 2018
Filing Date:
January 25, 2018
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
C09D201/00; B41M5/28; B41M5/46; C09D5/26; C09D7/40; C09D11/50; C09K9/02
Foreign References:
| JPH08300825A | 1996-11-19 | |||
| JPH0679970A | 1994-03-22 | |||
| JPH06305247A | 1994-11-01 | |||
| JPH0564959A | 1993-03-19 | |||
| JP2015193232A | 2015-11-05 | |||
| JP2009251440A | 2009-10-29 | |||
| JP2004090656A | 2004-03-25 | |||
| JPH07309070A | 1995-11-28 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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