Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1995-04-24
1998-01-06
Fuller, Benjamin R.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
3461351, 235462, 235436, B41J 2435, G01D 1524, H01S 1131, G11B 700
Patent
active
057060479
ABSTRACT:
A optical storage disc for use in an optical storage system includes a storage layer which is capable of being disrupted when a laser beam of sufficient intensity is focused thereon. The optical storage disc has a transparent substrate layer on one side of the storage layer and a lacquer layer on the other side of the storage layer. The disruptions provided by the laser beam are selected to provide human readable and/or machine readable patterns. To reduce the damage to portions of the optical disc other than the storage layer, the storage layer is exposed to the laser beam prior to curing, or prior to applying and curing the lacquer layer. The optical disc can be of the type with data written thereon during fabrication, or the disc can be of the type in which data can be impressed thereon after fabrication of the optical disc. The patterns on the optical disc can be in the form of optical bar codes formed in a mirror region of the disc. In one application of the present invention involving the type of disc on which data can be written after fabrication, the pattern resulting from application of the laser beam to the disc is read by an optical reading device and transferred to the disc in the data format.
REFERENCES:
patent: 3752961 (1973-08-01), Torrey
patent: 4141078 (1979-02-01), Bridges, Jr. et al.
patent: 4961077 (1990-10-01), Wilson et al.
Cushman Thomas Richard
Kline Patrick Joseph
Lentz Joseph
Eastman Kodak Company
Fuller Benjamin R.
Gordon Raquel Yvette
Owens Raymond L.
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