JPS5999226U

JPS5999226U - optical recording or reproducing device

Info

Publication number: JPS5999226U
Application number: JP139883U
Authority: JP
Inventors: 和田　繁一
Original assignee: ティアック株式会社
Priority date: 1983-01-10
Filing date: 1983-01-10
Publication date: 1984-07-05

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は光学的再生装置を説明的に示す正面図、　　−
第２図は記録媒体を説明的に示す平面図、第３図は記録
媒体の拡大断面図、第４図は本考案の第１の実施例に係
わる光学的記録再生装置を説明的に示す平面図、第５図
は第４図の装置の一部縦断拡大側面図、第６図は本考案
の第２の実施例に係わるディスク記録再生装置の一部を
示す一部縦断側面図、第７図は本考案の第３の実施例に
係わるディスク記録再生装置の一部を示す一部縦断側面
図　　　−である。尚図面に用いられている符号に於いて、１は記録媒体、
６はターンテーブル、９は光ビーム、１０は光ビーム投
射装置、１７は集光レンズ、２０は筐体、２３は蓋体、
２４は仕切板、２５は長孔、２７は遮蔽板、２８は長孔
、２９は電磁プランジャ、３０はコイルバネ、３３は回
動レバー、口第６図 −「第３図　　− ／２　　。 −第４図　２１　　２４３０３２−２１１２ｊ）　　　
　３ｉ７（８“３９１０５１FIG. 1 is a front view illustrating an optical reproducing device;
FIG. 2 is a plan view explanatory of a recording medium, FIG. 3 is an enlarged sectional view of the recording medium, and FIG. 4 is a plane view explanatory of an optical recording/reproducing apparatus according to the first embodiment of the present invention. 5 is a partially longitudinal enlarged side view of the apparatus shown in FIG. 4, FIG. 6 is a partially longitudinal side view showing a part of the disk recording/reproducing apparatus according to the second embodiment of the present invention, and FIG. The figure is a partially longitudinal side view showing a part of a disc recording/reproducing apparatus according to a third embodiment of the present invention. In the symbols used in the drawings, 1 indicates the recording medium;
6 is a turntable, 9 is a light beam, 10 is a light beam projection device, 17 is a condensing lens, 20 is a housing, 23 is a lid body,
24 is a partition plate, 25 is a long hole, 27 is a shielding plate, 28 is a long hole, 29 is an electromagnetic plunger, 30 is a coil spring, 33 is a rotating lever, 4 Figure 21 243032-2112j)
3i7(8"391 051

Claims

[Scope of utility model registration request]

(1) A recording medium holding device that holds a recording medium in a recordable or reproducible state, and a light beam for recording information signals on the recording medium held by the holding device or reproducing information signals from the recording medium. a light beam projection device that projects the light beam onto the recording medium; and a light beam projection device that is movably disposed in a path of the light beam that projects the light beam onto the recording medium held by the holding device, and that projects the light beam onto the recording medium.
and a position where the light beam projected onto the recording medium by the light beam projection device is blocked or attenuated, and a position where the light beam is allowed to be projected onto the recording medium by the light beam projection device. Optical recording or reproducing device comprising a light beam shielding or attenuating member.

(2) The recording medium is a disk-shaped recording medium, the holding device is a device that holds the disk-shaped recording medium substantially horizontally, and the light beam projection device is arranged below the disk-shaped recording medium. The optical recording or reproducing apparatus according to claim 1, which is a device for projecting the light beam onto the lower surface of the disk-shaped recording medium.

(3) The light beam shielding or attenuation member is associated with the operating device so that it moves to a position that allows projection of the light beam when the operating device for setting the recording or reproducing state is operated. An optical recording or reproducing device according to claim 1 or 2 of the utility model registration claim, which is a member.

(4) A utility model registration claim in which the light beam shielding or attenuating member is a shielding or attenuating member that moves to a position that allows projection of the light beam in connection with the mounting of the recording medium on the holding device. Optical recording or reproducing device according to scope 1 or 2.゛・

(5) The light beam shielding or attenuation member is the holding bag!
When the lid covering the recording medium held in the recording medium is closed, the light beam is allowed to be projected, and when the lid is opened, the light beam is blocked or attenuated. The optical recording or reproducing device according to claim 1 or 2, which is a shielding or damping member associated with the lid.