JPS56127928A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS56127928A
JPS56127928A JP2961480A JP2961480A JPS56127928A JP S56127928 A JPS56127928 A JP S56127928A JP 2961480 A JP2961480 A JP 2961480A JP 2961480 A JP2961480 A JP 2961480A JP S56127928 A JPS56127928 A JP S56127928A
Authority
JP
Japan
Prior art keywords
recording medium
magnetic recording
substrate
cracks
thin film
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
JP2961480A
Other languages
Japanese (ja)
Inventor
Takashi Suzuki
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 JP2961480A priority Critical patent/JPS56127928A/en
Publication of JPS56127928A publication Critical patent/JPS56127928A/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
    • 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
    • G11B5/851—Coating a support with a magnetic layer by sputtering
    • 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
    • C23C14/02—Pretreatment of the material to be coated

Landscapes

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

Abstract

PURPOSE:To obtain a magnetic recording medium having a large mechanical strength and an improved travelling performance, by causing the discontinuous cracks to a thin film of ferromagnetic substance. CONSTITUTION:A thin film of ferromagnetic substance such as Co-Ni or the like is formed on a substrate of polyester film or the like to obtain a magnetic recording medium. In such recording medium, the cracks 1 having the average length of about <=1mm. (preferably <=0.5mm.) is caused to the ferromagnetic substance thin film. (The crack can have branches.) These cracks can be caused in a desired form by the following methods: (1) a sample having no crack is processed with an appropriate tension and at a proper temperature; and (2) a substrate is put under a compratively high tension, and then a vapor deposition is carried out with a proper speed of vapor deposition and at a proper temperature of substrate; and others.
JP2961480A 1980-03-07 1980-03-07 Magnetic recording medium Pending JPS56127928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2961480A JPS56127928A (en) 1980-03-07 1980-03-07 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2961480A JPS56127928A (en) 1980-03-07 1980-03-07 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS56127928A true JPS56127928A (en) 1981-10-07

Family

ID=12280943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2961480A Pending JPS56127928A (en) 1980-03-07 1980-03-07 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS56127928A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62283414A (en) * 1986-05-30 1987-12-09 Konica Corp Magnetic recording medium having continuous crack in magnetic layer
FR2785834A1 (en) * 1998-11-17 2000-05-19 Armines Ass Pour La Rech Et Le SURFACE TREATMENT METHOD OF MATERIAL FOR RECEIVING A COATING

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62283414A (en) * 1986-05-30 1987-12-09 Konica Corp Magnetic recording medium having continuous crack in magnetic layer
FR2785834A1 (en) * 1998-11-17 2000-05-19 Armines Ass Pour La Rech Et Le SURFACE TREATMENT METHOD OF MATERIAL FOR RECEIVING A COATING
WO2000029129A1 (en) * 1998-11-17 2000-05-25 Armines Method for treating a material surface designed to receive a coating

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