CA1065485A - Disque et methode de fabrication - Google Patents

Disque et methode de fabrication

Info

Publication number
CA1065485A
CA1065485A CA249,875A CA249875A CA1065485A CA 1065485 A CA1065485 A CA 1065485A CA 249875 A CA249875 A CA 249875A CA 1065485 A CA1065485 A CA 1065485A
Authority
CA
Canada
Prior art keywords
groove
light beam
depth
disk
laser light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA249,875A
Other languages
English (en)
Inventor
Chiaki Kojima
Takashi Otobe
Hiroshi Ohki
Yuzuru Yanagisawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to CA249,875A priority Critical patent/CA1065485A/fr
Application granted granted Critical
Publication of CA1065485A publication Critical patent/CA1065485A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
CA249,875A 1976-04-08 1976-04-08 Disque et methode de fabrication Expired CA1065485A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA249,875A CA1065485A (fr) 1976-04-08 1976-04-08 Disque et methode de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA249,875A CA1065485A (fr) 1976-04-08 1976-04-08 Disque et methode de fabrication

Publications (1)

Publication Number Publication Date
CA1065485A true CA1065485A (fr) 1979-10-30

Family

ID=4105669

Family Applications (1)

Application Number Title Priority Date Filing Date
CA249,875A Expired CA1065485A (fr) 1976-04-08 1976-04-08 Disque et methode de fabrication

Country Status (1)

Country Link
CA (1) CA1065485A (fr)

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