Radiation-sensitive record disc with improved internal structure

Details Radiation-sensitive record disc with improved internal structure Radiation-sensitive record disc with improved internal structure

1983-11-08

1986-01-14

Hartary, Joseph W.

Recorders

Record receivers and/or driving means therefor

Disc

346 76L, 369284, G01D 1534

Patent

active

045648506

ABSTRACT:
A radiation-sensitive record disc is disclosed having a first disc and a second disc coaxially positioned adjacent the first disc to reinforce the first disc. A first spacer is positioned between the first and second discs for fixedly connecting the discs together and to form an air space between the discs. A recording layer is formed on one surface of the first or second discs within the air space. A second spacer is radially displaced from the first spacer, and positioned between the first and second discs. This second spacer enables the discs to move relative to each other in a radial direction in response to expansion or contraction of at least one of the discs due to changes in temperature, humidity, atmospheric pressure, etc.

REFERENCES:
patent: 4074282 (1979-01-01), Balas, Jr. et al.
patent: 4331966 (1982-05-01), Moe
patent: 4443806 (1984-04-01), Ando

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