Burroughs, Inc.

Unisys Corporation

Shiuh Chao

Edward V LaBudde

Neville K Lee

Miguel A Capote

Robert A LaBudde

Neville Lee

Recording methods, systems and media for recording and read-out with relatively low-power laser means to write digital data 'bits' (as reflectance changes) for high density computer storage. One preferred medium comprises a disk support having an 'anti-reflective' surface on which is laid a non-continuous 'information layer' adapted to absorb recording radiation (from laser beam), and so 'write' the bits, by 'agglomerating' (coalescing). The information layer exhibits suprisingly high sensitivity, apt for low power recording, and extended archival stability; more suprising, it appears to be formed without any evidence of the usual ablation, 'pit formation' or other deformation.

Optical recording using an agglomerating recording medium which changes

An optical data storage system employing a data-modulated writing laser beam and a non-erasing reading laser beam of predetermined wavelength along with an improved optical medium comprised of multiple layers whose optical characteristics and thicknesses are chosen in conjunction with the writing and reading laser beams to provide an anti-reflection condition for unrecorded portions of the medium and a relatively high reflectivity for recorded portions of the optical medium. A preferred optical medium includes a highly reflective aluminum layer, a fluorinated hydrocarbon polymer spacer layer overlaying the reflective layer, a nucleation layer overlaying the spacer layer and also serving as a heat insulator therefor, and a gold absorber layer overlaying the nucleation layer.

Optical storage system employing a multi-layer optical medium

An optical data storage system employing a data-modulated writing laser beam and a non-erasing reading laser beam of predetermined wavelength along with an improved optical medium comprised of multiple layers whose optical characteristics and thicknesses are chosen in conjunction with the writing and reading laser beams to provide an anti-reflection condition for unrecorded portions of the medium and a relatively high reflectivity for recorded portions of the optical medium. A preferred optical medium includes a highly reflective aluminum layer, a fluorinated hydrocarbon polymer spacer layer overlaying the reflective layer, and a gold absorber layer overlaying the spacer layer.

Growing community of inventors

Hawthorne, CA, United States of America

Shiuh Chao