Image-recording medium, method for forming image-recording medium, method and apparatus for reading data
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United States of America Patent
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Aug 20, 2002
Grant Date -
N/A
app pub date -
Jul 24, 2000
filing date -
Jul 27, 1999
priority date (Note) -
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Abstract
There is described an image-recording medium and an image-reading method, which make it possible to improve reading accuracy of information by avoiding duplication of an optical variable image with the information. The image-recording medium includes a substrate, an image-receiving layer provided on the substrate and an optical variable layer provided on the substrate, wherein at least a part of the optical variable layer includes an optical variable image, and the optical variable image is formed in a manner such that the optical variable image, overlapping with an image recorded on the image-receiving layer, emerges in a first direction, while the optical variable image, overlapping with an image recorded on the image-receiving layer, does not emerge in a second direction.
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