G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 7/004 (2006.01) B41M 3/14 (2006.01) B44F 1/12 (2006.01) G02B 5/18 (2006.01) G06K 1/12 (2006.01) G06K 7/10 (2006.01) G11B 11/105 (2006.01)
Patent
CA 2629159
The invention relates to a method of recording machine-readable information on an article, including the steps of: providing a carrier having flakes dispersed therein onto the surface of the article, wherein all of the flakes have a beam-splitting grating pattern encoding the information thereon; aligning the flakes parallel to a sloped plane forming a slope angle with the surface of the article; and, solidifying the carrier. When the article is irradiated with an EM beam, a first portion of the EM beam is reflected from the surface of the article, forming a surface reflection, a second portion of the beam is reflected from the beam- splitting grating pattern, forming an arrangement of sub-beams, and the slope angle provides a spatial separation between the arrangement of sub-beams and the surface reflection, enabling machine-reading.
Phillips Roger W.
Raksha Vladimir P.
Tan Kim Leong
Jds Uniphase Corporation
Teitelbaum & Maclean
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