JPS5247799A - Process for producing a magnetic sheet - Google Patents

Process for producing a magnetic sheet

Info

Publication number
JPS5247799A
JPS5247799A JP50123699A JP12369975A JPS5247799A JP S5247799 A JPS5247799 A JP S5247799A JP 50123699 A JP50123699 A JP 50123699A JP 12369975 A JP12369975 A JP 12369975A JP S5247799 A JPS5247799 A JP S5247799A
Authority
JP
Japan
Prior art keywords
magnetic sheet
producing
punch
damaging
punching
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
JP50123699A
Other languages
Japanese (ja)
Other versions
JPS5824847B2 (en
Inventor
Eiichi Tadokoro
Tatsuji Kitamoto
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP50123699A priority Critical patent/JPS5824847B2/en
Publication of JPS5247799A publication Critical patent/JPS5247799A/en
Publication of JPS5824847B2 publication Critical patent/JPS5824847B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To improve the efficiency of a cutting work and stabilize the precision and rotary floating property of a self-floating type magnetic sheet without damaging the quality of the magnetic surface thereof by punching the surface of a diamagnetic layer opposite to t he pressing surface of a punch.
COPYRIGHT: (C)1977,JPO&Japio
JP50123699A 1975-10-14 1975-10-14 Jikishi Tonoseizohouhou Expired JPS5824847B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50123699A JPS5824847B2 (en) 1975-10-14 1975-10-14 Jikishi Tonoseizohouhou

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50123699A JPS5824847B2 (en) 1975-10-14 1975-10-14 Jikishi Tonoseizohouhou

Publications (2)

Publication Number Publication Date
JPS5247799A true JPS5247799A (en) 1977-04-15
JPS5824847B2 JPS5824847B2 (en) 1983-05-24

Family

ID=14867139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50123699A Expired JPS5824847B2 (en) 1975-10-14 1975-10-14 Jikishi Tonoseizohouhou

Country Status (1)

Country Link
JP (1) JPS5824847B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0327417A (en) * 1989-06-23 1991-02-05 Toshiba Corp Personal computer

Also Published As

Publication number Publication date
JPS5824847B2 (en) 1983-05-24

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