Dynamic information storage or retrieval – Storage medium structure – Specified material
Patent
1980-03-10
1981-12-15
Bowers, Jr., Charles L.
Dynamic information storage or retrieval
Storage medium structure
Specified material
430 5, 430 18, 430321, 430326, 430327, 430328, 430329, 430296, 430320, 3581285, 358129, 346137, 264107, G01D 1534, G03C 500, G11B 700, H04N 576
Patent
active
043060137
ABSTRACT:
An improved method for replicating a spiral groove pattern. The pattern is recorded in a photoresist layer which is then developed to reproduce the pattern in the photoresist layer. The pattern is transferred to a metal layer and formed in the surface of a plastic substrate. The improvement comprises the additional steps of asymmetrically irradiating the photoresist layer and removing the irradiated photoresist surface layer to produce a photoresist layer of uniform thickness.
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Ryan, RCA Review, vol. 39, pp. 87-115, 3/78.
Firester et al., RCA Review, vol. 39, pp. 427-471, 9/78.
Albert et al., Journal of the Electrochemical Society, vol. 109, pp. 710-712, 8/62.
Henderson, III William C.
Roach William R.
Bloom Allen
Bowers Jr. Charles L.
Morris Birgit E.
RCA Corporation
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