JPS55125548A - Rotary type encoder and its preparation - Google Patents

Rotary type encoder and its preparation

Info

Publication number
JPS55125548A
JPS55125548A JP3060979A JP3060979A JPS55125548A JP S55125548 A JPS55125548 A JP S55125548A JP 3060979 A JP3060979 A JP 3060979A JP 3060979 A JP3060979 A JP 3060979A JP S55125548 A JPS55125548 A JP S55125548A
Authority
JP
Japan
Prior art keywords
original disk
frequency
regular
recording
recording bit
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.)
Pending
Application number
JP3060979A
Other languages
Japanese (ja)
Inventor
Taiji Tsunoda
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP3060979A priority Critical patent/JPS55125548A/en
Publication of JPS55125548A publication Critical patent/JPS55125548A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacturing Optical Record Carriers (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To obtain a recording bit of high precision and high division by continuously forming a recording bit, by rotating a master original disk, and irradiating an energy beam controlled by its regular frequency.
CONSTITUTION: A master original disk 1 is placed on the etching layer on the base plate, the original disk 1 is rotated in the regular rotational frequency by the rotary unit M, and a laser beam, etc. are irradiated on the recording layer of the original disk 1. The aforesaid beam is controlled by the regular frequency, and is gradually moved in the radial direction of the original disk 1 as the irradiation and stop are repeated in accordance with the above frequency. Accordingly, on the track of the recording layer is formed the recording bit 4 which has length and space decided by the speed of rotation of the original disk 1 and the control frequency of the beam.
COPYRIGHT: (C)1980,JPO&Japio
JP3060979A 1979-03-16 1979-03-16 Rotary type encoder and its preparation Pending JPS55125548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3060979A JPS55125548A (en) 1979-03-16 1979-03-16 Rotary type encoder and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3060979A JPS55125548A (en) 1979-03-16 1979-03-16 Rotary type encoder and its preparation

Publications (1)

Publication Number Publication Date
JPS55125548A true JPS55125548A (en) 1980-09-27

Family

ID=12308608

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3060979A Pending JPS55125548A (en) 1979-03-16 1979-03-16 Rotary type encoder and its preparation

Country Status (1)

Country Link
JP (1) JPS55125548A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5850637A (en) * 1981-09-18 1983-03-25 Matsushita Electric Ind Co Ltd Disc-like recording medium
EP0152940A2 (en) 1984-02-17 1985-08-28 Hitachi, Ltd. Apparatus and method for detecting an air-fuel ratio

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108155A (en) * 1976-03-08 1977-09-10 Cetec Corp Shaft angle converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52108155A (en) * 1976-03-08 1977-09-10 Cetec Corp Shaft angle converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5850637A (en) * 1981-09-18 1983-03-25 Matsushita Electric Ind Co Ltd Disc-like recording medium
JPH0427613B2 (en) * 1981-09-18 1992-05-12 Matsushita Electric Ind Co Ltd
EP0152940A2 (en) 1984-02-17 1985-08-28 Hitachi, Ltd. Apparatus and method for detecting an air-fuel ratio

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