JPS5532207A - Manufacture of information board - Google Patents

Manufacture of information board

Info

Publication number
JPS5532207A
JPS5532207A JP10259078A JP10259078A JPS5532207A JP S5532207 A JPS5532207 A JP S5532207A JP 10259078 A JP10259078 A JP 10259078A JP 10259078 A JP10259078 A JP 10259078A JP S5532207 A JPS5532207 A JP S5532207A
Authority
JP
Japan
Prior art keywords
films
pattern
film
pit depth
mothers
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
JP10259078A
Other languages
Japanese (ja)
Inventor
Nagaaki Etsuno
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 JP10259078A priority Critical patent/JPS5532207A/en
Publication of JPS5532207A publication Critical patent/JPS5532207A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture

Landscapes

  • Manufacturing Optical Record Carriers (AREA)

Abstract

PURPOSE:To make pit depth even and also to improve size precision by using a specific inorganic film to fix the pit depth in manufacture of an information plate of a video disc, etc. CONSTITUTION:On glass substrate 1, thin metal films 2 are formed according to a pit pattern. On films 2, inorganic (MgF2, etc.) film 6 which light for resist exposure penetrates is formed by vapor-deposition, etc., as thick as the pit depth. On film 6, resist films 7 are formed and exposed and developed via films 2 from the reverse of substrate 1 to form pattern 7 with reverse unevenness to films 2. Pattern 7 is used as a mask for etching to remove unneeded parts of MgF2 layer 6 and the mask, i.e. films 7 are removed next. Then, metal layer 8 is formed by plating and separated into mothers. The uneven surface of mothers is plated to form a stamper, which is used to press vinyl chloride.
JP10259078A 1978-08-23 1978-08-23 Manufacture of information board Pending JPS5532207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10259078A JPS5532207A (en) 1978-08-23 1978-08-23 Manufacture of information board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10259078A JPS5532207A (en) 1978-08-23 1978-08-23 Manufacture of information board

Publications (1)

Publication Number Publication Date
JPS5532207A true JPS5532207A (en) 1980-03-06

Family

ID=14331437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10259078A Pending JPS5532207A (en) 1978-08-23 1978-08-23 Manufacture of information board

Country Status (1)

Country Link
JP (1) JPS5532207A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098164A2 (en) * 1982-06-30 1984-01-11 Fujitsu Limited Static type semiconductor memory device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098164A2 (en) * 1982-06-30 1984-01-11 Fujitsu Limited Static type semiconductor memory device

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