Apparatus for reading or writing contrast enhanced information o

Details Apparatus for reading or writing contrast enhanced information o Apparatus for reading or writing contrast enhanced information o

1990-07-18

1991-06-18

McElheny, Jr., Donald

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

G11B 700

Patent

active

050254359

ABSTRACT:
An inscribable record carrier (1) is described, which comprises a previously recorded servo-track structure provided with a recording layer. The contrast between the servo-tracks (3) provided with information areas and the intermediate tracks (5) is increased by combining wide tracks (20) with a white-writing recording layer (24) or by combining narrow servo-tracks (20) with a black-writing recording layer (21).

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