Optical foam-spacer disk assembly

Details Optical foam-spacer disk assembly Optical foam-spacer disk assembly

1987-03-02

1989-09-26

Goldberg, E. A.

Recorders

Record receivers and/or driving means therefor

Disc

369284, 428694, 428913, 430495, 430945, G01D 1534, G11B 510, G03C 100

Patent

active

048704296

ABSTRACT:
An optical disk is provided which comprises two sheets of substrates; or two sheets of substrate and a reinforcing plate or a reinforcing rim; or one sheet of substrate and a reinforcing plate; which are bonded to form an integrated body having a spacer interposed therebetween, said spacer being made of elastomeric foam having a specific gravity of not more than 1.5 and an expansion ratio of not less than 1.5 as the material of the said spacer. This optical disk has a high adaptability of the drive and exhibits a high reliability, i.e. excellent vibration restricting performance, thereby being possible to provide a stable and highly accurate information processing.

REFERENCES:
patent: 4074282 (1978-02-01), Balas et al.
patent: 4555716 (1985-11-01), Odawara et al.
patent: 4564850 (1986-01-01), Kazuharu
Materials Handbook, George S. Brady, McGraw Hill Book Co., pp. 643-649, 9th Ed., 1959.
Electro and Mini/Micro Northeast, Apr. 23-25, 1985, pp. 2-3, Eastman Kodak Co., N.Y., U.S., A. B. Marchant: "Optical Disk Trade-Offs".
Proceedings of the SID, vol. 24, No. 1, 1983, pp. 17-23, SID, Los Angeles CA., U.S.; A. E. Bell, "The Design and Optimization of the Optical Data Disk".

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