Claims
- 1. An object to be checked for authenticity, comprising:
- a base material formed of paper containing a plurality of wood pulp fibers;
- a plurality of fibrous magnetic polymer elements incorporated in the base material, together with the wood pulp fibers, each of the elements including an element main body formed of an acrylic resin and magnetic metal powder contained therein;
- the wood pulp fibers and the magnetic polymer elements being tangled with one another in three dimensions;
- a scanning region for checking the object for authenticity; and
- a code indicator section for storing encoded information corresponding to an output obtained in accordance with the distribution of the magnetic polymer elements in the scanning region, said region and said section being located in said base material.
- 2. The object according to claim 1, wherein said code indicator section includes a magnetically readable medium for recording data.
- 3. The object according to claim 1, wherein said code indicator section includes an optically readable medium for recording data.
- 4. The object according to claim 1, wherein said base material has card base members of paper or a synthetic resin stacked thereon.
- 5. The object according to claim 1, wherein said base material includes opposite surfaces which are covered by card base members of paper or a synthetic resin.
- 6. The object according to claim 4, wherein said card base members are covered by films of a synthetic resin which are transparent to visible light.
- 7. The object according to claim 1, wherein said base material is covered by card base members of a (transparent) synthetic resin which are transparent to visible light and which also serve as a protective layer.
- 8. The object according to claim 1, wherein said base material includes opposite surfaces and has a magnetic layer on at least one of the opposite surfaces thereof.
- 9. The object according to claim 8, wherein a nonmagnetic intermediate layer formed of a nonmagnetic material is interposed between said base material and said magnetic layer.
Priority Claims (4)
Number |
Date |
Country |
Kind |
5-303033 |
Dec 1993 |
JPX |
|
5-303065 |
Dec 1993 |
JPX |
|
5-310423 |
Dec 1993 |
JPX |
|
6-128878 |
Jun 1994 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 08/347,976, filed Dec. 1, 1994 now U.S. Pat. No. 5,601,931.
US Referenced Citations (15)
Non-Patent Literature Citations (1)
Entry |
U. S. Ser. No. 08/243,582, Hoshino et al., filed May 16, 1994. |
Continuations (1)
|
Number |
Date |
Country |
Parent |
347976 |
Dec 1994 |
|