JPH01103022U - - Google Patents

Info

Publication number
JPH01103022U
JPH01103022U JP1987195789U JP19578987U JPH01103022U JP H01103022 U JPH01103022 U JP H01103022U JP 1987195789 U JP1987195789 U JP 1987195789U JP 19578987 U JP19578987 U JP 19578987U JP H01103022 U JPH01103022 U JP H01103022U
Authority
JP
Japan
Prior art keywords
disk
diameter
slope
front surface
utility
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
JP1987195789U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP1987195789U priority Critical patent/JPH01103022U/ja
Publication of JPH01103022U publication Critical patent/JPH01103022U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例の縦断面図、第２図は
平面図、第３図は一使用状態の斜面図、第４図及
び第５図は他の実施例の縦断面図、第６図は従来
例の縦断面図である。 １…グルーブ形成部、１１…表側面、２…中心
孔、３…デイスク基板、４…湾曲面、４１，４２
…斜面、５…裏側面、６…中央凹部、１０…デイ
スクカートリツジ。 FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a plan view, FIG. 3 is a perspective view of one state of use, and FIGS. 4 and 5 are longitudinal sectional views of other embodiments. FIG. 6 is a longitudinal sectional view of a conventional example. DESCRIPTION OF SYMBOLS 1... Groove forming part, 1 1 ... Front side, 2... Center hole, 3... Disk substrate, 4... Curved surface, 4 1 , 4 2
 ...Slope, 5...Back side, 6...Central recess, 10...Disk cartridge.

Claims (1)

【実用新案登録請求の範囲】 (1) 光学式又は光磁気式などによつて記録及び
再生可能なグルーブ形成面１を平坦表側面１１に
有し、中央部に中心孔２のある円形状のデイスク
基板３において、該デイスク基板３の外周面を前
記表側面１１からデイスク裏側面５にわたりアー
ル形状となる湾曲面４又は斜面４１に形成したこ
とを特徴とする情報デイスク。 (2) 前記湾曲面４又は斜面４１が、前記表側面
１１の直径が最大であつて厚み方向に直径が漸減
してデイスク裏側面５の直径となる外周面を持つ
ているものである実用新案登録請求の範囲第１項
記載の情報デイスク。 (3) 前記斜面４１が二つの面取りテーパー面と
なつているものである実用新案登録請求の範囲第
１項記載の情報デイスク。[Claims for Utility Model Registration] (1) A circular shape having a groove forming surface 1 on a flat front surface 11 that can be recorded and reproduced by an optical method or a magneto-optical method, and a center hole 2 in the center. An information disk characterized in that the outer circumferential surface of the disk substrate 3 is formed into a curved surface 4 or an inclined surface 41 which is rounded from the front surface 11 to the back surface 5 of the disk. (2) The curved surface 4 or the slope 4 1 has an outer peripheral surface where the diameter of the front surface 1 1 is the maximum and the diameter gradually decreases in the thickness direction to reach the diameter of the back surface 5 of the disk. An information disk according to claim 1 of the utility model registration claim. (3) The information disk according to claim 1, wherein the slope 41 has two chamfered tapered surfaces.
JP1987195789U 1987-12-25 1987-12-25 Pending JPH01103022U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987195789U JPH01103022U (en) 1987-12-25 1987-12-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987195789U JPH01103022U (en) 1987-12-25 1987-12-25

Publications (1)

Publication Number Publication Date
JPH01103022U true JPH01103022U (en) 1989-07-12

Family

ID=31486446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987195789U Pending JPH01103022U (en) 1987-12-25 1987-12-25

Country Status (1)

Country Link
JP (1) JPH01103022U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8930974B2 (en) 2012-08-09 2015-01-06 Panasonic Corporation Disk-shaped information recording medium, disk cartridge, and information recording/reproducing apparatus
US9099105B1 (en) 2014-01-24 2015-08-04 Panasonic Intellectual Property Management Co., Ltd. Disk-shaped information recording medium, disk cartridge and information recording and reproducing apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58137146A (en) * 1982-02-05 1983-08-15 Matsushita Electric Ind Co Ltd Optical recording and reproducing disc
JPS6079540A (en) * 1983-10-06 1985-05-07 C B S Sony Rekoode Kk Optical recording medium
JPS60246039A (en) * 1984-05-21 1985-12-05 Matsushita Electric Ind Co Ltd Optical information carrier disk

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58137146A (en) * 1982-02-05 1983-08-15 Matsushita Electric Ind Co Ltd Optical recording and reproducing disc
JPS6079540A (en) * 1983-10-06 1985-05-07 C B S Sony Rekoode Kk Optical recording medium
JPS60246039A (en) * 1984-05-21 1985-12-05 Matsushita Electric Ind Co Ltd Optical information carrier disk

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8930974B2 (en) 2012-08-09 2015-01-06 Panasonic Corporation Disk-shaped information recording medium, disk cartridge, and information recording/reproducing apparatus
US9015735B2 (en) 2012-08-09 2015-04-21 Panasonic Intellectual Property Management Co., Ltd. Disk-shaped information recording medium, disk cartridge, and information recording/reproducing apparatus
US9099105B1 (en) 2014-01-24 2015-08-04 Panasonic Intellectual Property Management Co., Ltd. Disk-shaped information recording medium, disk cartridge and information recording and reproducing apparatus

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