【発明の名称】光学式情報記録担体及びその製造方法

Japanese Patent JPH0823941

B2

An optical information record carrier, in the form of an optical disk, has multiple reflective surfaces (12,15), each carrying separate information and each readable by an optical beam directed from the same side of the record carrier. The topmost reflective surface (12) reflects light of a first waveband and passes light of a second waveband. The next topmost reflective layer (15) reflects light within at least part of the second waveband. The record carrier may be formed by producing a first reflective layer (12) having a first pit pattern in the surface of a transparent substrate (11), pressing the first substrate/layer combination to a transparent stamper (13) having a second pit pattern, with a radiation hardening liquid resin (14) therebetween, irradiating the resin by applying radiation to the resin through the stamper, peeling off the stamper, applying a second reflective layer (15) to the hardened resin surface opposite the surface in contact with the first reflective layer, and applying a protective layer (16) to the second reflective layer.

HIGUCHI TAKANOBU
IIDA TETSUYA
OGOSHI KUNIZO
YOKOZEKI SHINICHI

JP2099989A

March 06, 1996

January 30, 1989

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PIONEER ELECTRONIC CORP

B29D17/00; G11B7/24041; G11B7/24062; G11B7/26; (IPC1-7): G11B7/24; G11B7/24; G11B7/26

Fujihiko Motohiko

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