Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1984-08-08
1987-01-06
Thomas, Alexander S.
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
369282, 369290, B32B 302
Patent
active
046346171
ABSTRACT:
Concentric guide grooves are formed on a glass substrate, and recording medium is disposed on the glass substrate having the concentric grooves. A centering device is secured to the glass substrate in a manner that the center of the centering device is positioned at the center of the concentric guide grooves. In a preferred form, photopolymer is disposed between the centering device and the glass substrate as adhesive. The centering device is provided with an aperture through which ultraviolet rays are applyed to the photo-polymer to cure it.
REFERENCES:
patent: 1885415 (1932-11-01), Collison
patent: 2654816 (1953-10-01), Miessner
patent: 4470137 (1984-09-01), Tago
patent: 4480282 (1984-10-01), Brock et al.
Hyuga Takao
Inui Tetsuya
Ohta Kenji
Takahashi Akira
Yamaoka Hideyoshi
Sharp Kabushiki Kaisha
Thomas Alexander S.
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