Title:
METHOD FOR PRODUCING SCRATCH CARD
Document Type and Number:
WIPO Patent Application WO/2006/070447
Kind Code:
A1
Abstract:
There is provided a method for producing a scratch card in which visual observation of concealed information is disabled during and after production. A varnish layer is formed on a thermal layer applied onto a card substrate and a scratch layer is formed directly on the surface of the varnish layer. After this, concealed information is printed on the thermal layer of the card substrate on the back of the varnish layer by applying a laser light onto the surface of the thermal layer from a position apart from the scratch layer while aiming at a target. The laser light is set not to cool each layer including the card substrate.
Inventors:
YAMADA TOSHIJI (JP)
YAMADA JUN (JP)
YAMADA MASATAKA (JP)
YAMADA MICHITAKA (JP)
YAMADA JUN (JP)
YAMADA MASATAKA (JP)
YAMADA MICHITAKA (JP)
Application Number:
PCT/JP2004/019590
Publication Date:
July 06, 2006
Filing Date:
December 28, 2004
Export Citation:
Assignee:
SANKI CO LTD (JP)
YAMADA TOSHIJI (JP)
YAMADA JUN (JP)
YAMADA MASATAKA (JP)
YAMADA MICHITAKA (JP)
YAMADA TOSHIJI (JP)
YAMADA JUN (JP)
YAMADA MASATAKA (JP)
YAMADA MICHITAKA (JP)
International Classes:
B42D15/10; B41J2/315; B41M5/26
Foreign References:
| JP2004050687A | 2004-02-19 | |||
| JPH08192592A | 1996-07-30 | |||
| JP2002103865A | 2002-04-09 |
Attorney, Agent or Firm:
Hosoi, Sadayuki (14-7 Hakusan 5-chome Bunkyo-ku, Tokyo 01, JP)
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