JPS57183638A - Production of magnetic recording medium - Google Patents

Production of magnetic recording medium

Info

Publication number
JPS57183638A
JPS57183638A JP6862781A JP6862781A JPS57183638A JP S57183638 A JPS57183638 A JP S57183638A JP 6862781 A JP6862781 A JP 6862781A JP 6862781 A JP6862781 A JP 6862781A JP S57183638 A JPS57183638 A JP S57183638A
Authority
JP
Japan
Prior art keywords
vapor
magnetic
magnetic tape
film
current
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
JP6862781A
Other languages
Japanese (ja)
Other versions
JPS644254B2 (en
Inventor
Koichi Shinohara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6862781A priority Critical patent/JPS57183638A/en
Publication of JPS57183638A publication Critical patent/JPS57183638A/en
Publication of JPS644254B2 publication Critical patent/JPS644254B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/04—Coating on selected surface areas, e.g. using masks
    • C23C14/042—Coating on selected surface areas, e.g. using masks using masks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/85—Coating a support with a magnetic layer by vapour deposition

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To increase production yield, by forming a recording layer by masking both end parts of a magnetic tape in the width direction of a film base material and vapor-depositing a magnetic material so as to produce a blank part and then cutting the blank part to eliminate the uneven roll-up of the magnetic tape. CONSTITUTION:A base material 7 of polyethylene terephthalate film, etc. for magnetic tape is shifted along the outer circumference surface of a cooling rotary drum 12 by a supply reel 8 via a free roller 9 and an expansion roller 11. Then the current of magnetic metallic steam 15 given from an evaporation container 14 is vapor-deposited by a mask 13 and in a prescribed range of incident angle. In this case, a mask 16 close to the curved surface of the drum 12 is set across the drum 12 so as to cover the both end surfaces of the material 7 to prevent the vapor deposition of the vapor current on the both end surfaces. The material 7 with which the vapor deposition is cover is fed to a cutting mechanism part 17 via the rollers 11 and 9 to be cut at its both ends. Then both the magnetic film formed part and unformed part are rolled up to reels 19 and 18 via the roller 9. Then the vapor-desposited film is formed at both ends of the material 7 to prevent the uneven roll-up of the magnetic tape which is caused by the complicated flow of the steam current.
JP6862781A 1981-05-06 1981-05-06 Production of magnetic recording medium Granted JPS57183638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6862781A JPS57183638A (en) 1981-05-06 1981-05-06 Production of magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6862781A JPS57183638A (en) 1981-05-06 1981-05-06 Production of magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS57183638A true JPS57183638A (en) 1982-11-12
JPS644254B2 JPS644254B2 (en) 1989-01-25

Family

ID=13379169

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6862781A Granted JPS57183638A (en) 1981-05-06 1981-05-06 Production of magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57183638A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61250837A (en) * 1985-04-30 1986-11-07 Sony Corp Production of vapor deposited magnetic tape

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61250837A (en) * 1985-04-30 1986-11-07 Sony Corp Production of vapor deposited magnetic tape

Also Published As

Publication number Publication date
JPS644254B2 (en) 1989-01-25

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