Dynamic information storage or retrieval – Systems having plural physically distinct independent tracks... – Having layered storage medium
Patent
1979-03-19
1981-11-03
Konick, Bernard
Dynamic information storage or retrieval
Systems having plural physically distinct independent tracks...
Having layered storage medium
369121, 346 76L, 3461351, 346137, 2603145, G11B 374, G11B 700, G01G 1534, G01D 1534
Patent
active
042989752
ABSTRACT:
The invention relates to an optical recording system and method in which information can be recorded and read by means of laser light on a recording medium. The recording medium comprises a circular substrate plate which is manufactured, for example, from a transparent synthetic resin and has a diameter from 5-50 cm and which is provided on at least one side with a recording layer consisting entirely or substantially entirely of a compound of phthalocyanine with a metal, metal oxide or metal halide. A very suitable recording layer is a layer of vapor-deposited vanodyl phthalocyanine in a maximum thickness of 200 nm. A metal layer of, for example, tellurium may be provided between the substrate and the recording layer or on the side of the recording layer remote from the substrate. The recording medium may also comprise an optically readable servo track. Upon recording information the element is exposed to pulsatory laser light, pits and/or holes being formed in the recording layer. Analog recording is possible. The element can be read both in transmission and in reflection.
REFERENCES:
patent: 1117419 (1914-11-01), Miller
patent: 3314073 (1967-04-01), Becker
patent: 3615558 (1971-10-01), Carreira et al.
patent: 3853783 (1974-12-01), Tucker
patent: 3903107 (1975-09-01), Griffiths et al.
patent: 3931460 (1976-01-01), Watson
patent: 3990084 (1976-11-01), Hamisch et al.
patent: 4069487 (1978-01-01), Kasai et al.
patent: 4084185 (1978-04-01), de Lang et al.
patent: 4097895 (1978-06-01), Spong
"Phtalocyanine Compounds", Moser & Thomas: Reinhold Pub. Corp.
de Bont Marinus R. J.
Kivits Petrus J.
Van Der Veen Jan
Konick Bernard
Psitos Aristotelis M.
Spain Norman N.
U.S. Philips Corporation
LandOfFree
Optical recording medium and method of optically recording infor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical recording medium and method of optically recording infor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical recording medium and method of optically recording infor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1068511