JPS5271202A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Production of original disc of information recording media
Assignee: Victor Company of Japan Ltd
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Filing: 1975-12-11
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Granted: —
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Expires: 1995-12-11
Abstract
Abstract PURPOSE:Molding efficiency is improved by forming a thin film of a light beam sensitive material on a substrate formed thereon with a thin metal film, scanning the substrate with a light beam to form guide grooves and making the pitch of the guide grooves constant.
Inventors
- 👤 Junji Kuroda
- 👤 Ichiro Ueno
- 👤 Hideaki Takehara
- 👤 Kosei Wada
- 👤 Yoshihiko Honjo
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-07 07:53
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/0057
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