JPS60254452A - フオトマスク用基板の製造方法 - Google Patents

フオトマスク用基板の製造方法

Info

Publication number
JPS60254452A
JPS60254452A JP10946184A JP10946184A JPS60254452A JP S60254452 A JPS60254452 A JP S60254452A JP 10946184 A JP10946184 A JP 10946184A JP 10946184 A JP10946184 A JP 10946184A JP S60254452 A JPS60254452 A JP S60254452A
Authority
JP
Japan
Prior art keywords
media
light
emitting diode
detection
floppy disk
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.)
Granted
Application number
JP10946184A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0313667B2 (enrdf_load_stackoverflow
Inventor
Fumihiko Nakazawa
文彦 中沢
Shinichi Tanaka
真一 田中
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10946184A priority Critical patent/JPS60254452A/ja
Publication of JPS60254452A publication Critical patent/JPS60254452A/ja
Publication of JPH0313667B2 publication Critical patent/JPH0313667B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/10—Control of operating function, e.g. switching from recording to reproducing by sensing presence or absence of record in accessible stored position or on turntable

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Moving Of Head For Track Selection And Changing (AREA)
JP10946184A 1984-05-31 1984-05-31 フオトマスク用基板の製造方法 Granted JPS60254452A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10946184A JPS60254452A (ja) 1984-05-31 1984-05-31 フオトマスク用基板の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10946184A JPS60254452A (ja) 1984-05-31 1984-05-31 フオトマスク用基板の製造方法

Publications (2)

Publication Number Publication Date
JPS60254452A true JPS60254452A (ja) 1985-12-16
JPH0313667B2 JPH0313667B2 (enrdf_load_stackoverflow) 1991-02-25

Family

ID=14510815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10946184A Granted JPS60254452A (ja) 1984-05-31 1984-05-31 フオトマスク用基板の製造方法

Country Status (1)

Country Link
JP (1) JPS60254452A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS632164A (ja) * 1986-06-20 1988-01-07 Mitsubishi Electric Corp デイスク検知装置
JPH0357768U (enrdf_load_stackoverflow) * 1989-10-06 1991-06-04

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59139174A (ja) * 1983-01-25 1984-08-09 Seiko Epson Corp 磁気記録再生装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59139174A (ja) * 1983-01-25 1984-08-09 Seiko Epson Corp 磁気記録再生装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS632164A (ja) * 1986-06-20 1988-01-07 Mitsubishi Electric Corp デイスク検知装置
JPH0357768U (enrdf_load_stackoverflow) * 1989-10-06 1991-06-04

Also Published As

Publication number Publication date
JPH0313667B2 (enrdf_load_stackoverflow) 1991-02-25

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