Information recording medium
AssigneeJVC Victor Company of Japan, Ltd.
InventorTetsuya Kondo
Life of this patent
Estimating the term…
Abstract
An information recording medium wherein an optically detectable information recording medium is comprised of at least a substrate, a recording layer, and a resin layer. The information recording medium has surface roughness R σ on the surface of the recording layer, which is in contact with the resin layer, under 5 nm. The information recording medium controls the reproduction signal noise, enables highly densified recording.
Claims7
A reproducing apparatus for an optically detectable information recording medium comprising at least a substrate, a recording layer, and a resin layer,
- wherein the surface of said recording layer in contact with said resin layer has a Root Mean Square roughness Ray σ of less than 5 nm,
- said reproducing apparatus at least comprising:
- a turntable for holding said information recording medium;
- a motor connected to said turntable for making said turntable move relatively;
- a light pickup for converging light on said information recording medium and for receiving reflected light from said information recording medium;
- a demodulator for demodulating a signal from said light pickup and for transmitting a demodulated signal to an interface;
- a servo controller for generating a focus servo signal to drive said light pickup and a tracking servo signal;
- an interface for transmitting said demodulated signal from said demodulator externally;
- and
- a controller for controlling said motor, servo controller, and interface.
An optically detectable information recording medium at least comprising:
- a substrate;
- a recording layer;
- and
- a resin layer,
- wherein the surface of said recording layer in contact with said resin layer has a Root Mean Square roughness R σ of less than 5 nm, and said substrate and said recording layer is in contact with each other, and the surface of said substrate is formed with micro patterns, and said micro patterns further comprise a pit.
An optically detectable information recording medium at least comprising:
- a substrate;
- a recording layer;
- and
- a resin layer,
- wherein the surface of said recording layer in contact with said resin layer has a Root Mean Square roughness R σ of less than 5 nm, and said substrate and said recording layer is in contact with each other, and the surface of said substrate is formed with micro patterns, and said micro patterns further comprise a groove and a land.
Dependencies are inferred from the claim text.