Title:
CARVED STAMP READER
Document Type and Number:
Japanese Patent JP3874839
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a carved stamp reader capable of clearly reading out a stamp on an object to be read out.
SOLUTION: This stamp reader 1 reads out a stamp pattern 21 on an object 20 to be read out by reflecting illumination light, emitted from an illuminating light source 41, by the reflection surface 43 of a reflector 42 to irradiate an object 20 to be read out with the reflected light and receiving reflected light from the carved stamp pattern 21 on the object 20 by an image pickup means 50. The wavelength of illuminating light projected from the light source 41 is set up to be infrared wavelength, and the reflection surface 43 of the reflector 42 is formed by gold (Au).
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Inventors:
Yasuo Ishiguro
Hideaki Uejo
Hideaki Uejo
Application Number:
JP13516096A
Publication Date:
January 31, 2007
Filing Date:
May 29, 1996
Export Citation:
Assignee:
Nidec Copal Corporation
International Classes:
G07D5/00; (IPC1-7): G07D5/00
Domestic Patent References:
JP4054692A | ||||
JP7107238A | ||||
JP3257156A | ||||
JP5089276A | ||||
JP2112090A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Shiro Terasaki
Hiroaki Aoki
Shiro Terasaki
Hiroaki Aoki