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Patent Searching and Data


Title:
【発明の名称】潜面マーキング
Document Type and Number:
Japanese Patent JP3029045
Kind Code:
B2
Abstract:
A method and apparatus for providing a body of material (14) with sub-surface marking in the form of an area of increased opacity to electromagnetic radiation. The method includes directing at a surface of the body (14) a high energy density beam (12, 26) to which the material (14) is transparent, and bringing the beam (12,26) to a focus at a location spaced from the surface and within the body (14) so as to cause localized ionization of the material (14). In a prefered embodiment the apparatus includes a laser (10) as a high energy density beam source and provides means (36, 38) to move the focus of the beam (12,26) relative to the body (14) so as to enable the mark to be of a predetermined shape.

Inventors:
Clement, Robert Mark
Redgar, Neville Richard
Saint Peter, Robert Peter
Application Number:
JP51396591A
Publication Date:
April 04, 2000
Filing Date:
August 14, 1991
Export Citation:
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Assignee:
United Distillers Public Limited Company
International Classes:
B23K26/00; B41J2/44; B29C71/04; B41M5/00; B41M5/24; B41M5/26; B44B7/00; C03C23/00; G06K1/12; B29C35/08; (IPC1-7): B41M5/26; B23K26/00
Domestic Patent References:
JP62183981A
JP5358562A
JP60221186A
JP59135785A
JP6178587A
JP2185490A
Attorney, Agent or Firm:
Shoichi Ui (4 others)