JPS5792435A - Formation of magnetic tape - Google Patents

Formation of magnetic tape

Info

Publication number
JPS5792435A
JPS5792435A JP16847280A JP16847280A JPS5792435A JP S5792435 A JPS5792435 A JP S5792435A JP 16847280 A JP16847280 A JP 16847280A JP 16847280 A JP16847280 A JP 16847280A JP S5792435 A JPS5792435 A JP S5792435A
Authority
JP
Japan
Prior art keywords
film
creases
magnetic tape
tape
metallic
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
JP16847280A
Other languages
Japanese (ja)
Inventor
Kiyoshi Takahashi
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 JP16847280A priority Critical patent/JPS5792435A/en
Publication of JPS5792435A publication Critical patent/JPS5792435A/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

Abstract

PURPOSE:To obtain a magnetic tape which is free of creases and curvature and never varies in electromagnetic conversion characteristics, by forming a magnetic metallic thin film of the surface of a plastic film and by winding the tape while slitting both its widthwise end parts to specific width after pressing the tape in contact with a heat roller with constant tensile force. CONSTITUTION:On a plastic film surface 21, a magnetic metallic film 22 is vapor-deposited. In this case, creases 23 are generated at the boundary between an nonmetallic part and the metallic film. If the film is wound as it is, the attitude of winding is disordered and when it is sized long, creases 23' are generated at the center part. To prevent those, the film after the vapor deposition is pressed against <=1 heat roll, thus eliminating the creases, curvature, etc. Then, both the end parts are slit to 5-30mm. width including the unnonmetallic part 21 and a metallic part to wind the film. The variations of electromagnetic conversion characteristics of a magnetic tape obtained as mentioned above are reduced. Thus, the quality and yield of the magnetic tape are improved.
JP16847280A 1980-11-28 1980-11-28 Formation of magnetic tape Pending JPS5792435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16847280A JPS5792435A (en) 1980-11-28 1980-11-28 Formation of magnetic tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16847280A JPS5792435A (en) 1980-11-28 1980-11-28 Formation of magnetic tape

Publications (1)

Publication Number Publication Date
JPS5792435A true JPS5792435A (en) 1982-06-09

Family

ID=15868733

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16847280A Pending JPS5792435A (en) 1980-11-28 1980-11-28 Formation of magnetic tape

Country Status (1)

Country Link
JP (1) JPS5792435A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0215420A (en) * 1988-07-01 1990-01-19 Sony Corp Production of magnetic recording medium
US6552167B1 (en) 1998-08-28 2003-04-22 Gryphon Therapeutics, Inc. Polyamide chains of precise length

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942901B1 (en) * 1968-06-28 1974-11-18
JPS50145207A (en) * 1974-05-13 1975-11-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942901B1 (en) * 1968-06-28 1974-11-18
JPS50145207A (en) * 1974-05-13 1975-11-21

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0215420A (en) * 1988-07-01 1990-01-19 Sony Corp Production of magnetic recording medium
US6552167B1 (en) 1998-08-28 2003-04-22 Gryphon Therapeutics, Inc. Polyamide chains of precise length

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