JPS5687232A - Magnetic tape - Google Patents

Magnetic tape

Info

Publication number
JPS5687232A
JPS5687232A JP16297379A JP16297379A JPS5687232A JP S5687232 A JPS5687232 A JP S5687232A JP 16297379 A JP16297379 A JP 16297379A JP 16297379 A JP16297379 A JP 16297379A JP S5687232 A JPS5687232 A JP S5687232A
Authority
JP
Japan
Prior art keywords
magnetic layer
sufficiently
magnetic
black
light
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
JP16297379A
Other languages
Japanese (ja)
Inventor
Takeshi Matsuura
Akira Morioka
Seiji Wataya
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.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell 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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP16297379A priority Critical patent/JPS5687232A/en
Publication of JPS5687232A publication Critical patent/JPS5687232A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To improve magnetic characteristics while decreasing light transmissivity sufficiently, by containing a black or blue pigment or dye in a base film, on which a magnetic layer is formed by being applied.
CONSTITUTION: In a base film on which a magnetic layer is formed by being applied, 12.5W20.0wt% black or blue pigment or dye superior in shielding effect against light of about 9,000Å in wavelength in contained. Consequently, light of about 9,000Å in wavelength detected by a sensor for detecting a magnetic tape terminal can effectively be occluded to decrease the light transmissivity sufficiently and the addition of the balck pigment, such as carbon black, to be contained in the magnetic layer can be reduced sufficiently in amount and also omitted, so that the magnetic characteristics can be improved with excellent smoothness of the magnetic layer surface.
COPYRIGHT: (C)1981,JPO&Japio
JP16297379A 1979-12-14 1979-12-14 Magnetic tape Pending JPS5687232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16297379A JPS5687232A (en) 1979-12-14 1979-12-14 Magnetic tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16297379A JPS5687232A (en) 1979-12-14 1979-12-14 Magnetic tape

Publications (1)

Publication Number Publication Date
JPS5687232A true JPS5687232A (en) 1981-07-15

Family

ID=15764791

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16297379A Pending JPS5687232A (en) 1979-12-14 1979-12-14 Magnetic tape

Country Status (1)

Country Link
JP (1) JPS5687232A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60173719A (en) * 1984-02-17 1985-09-07 Fuji Photo Film Co Ltd Magnetic recording medium
JPS61237622A (en) * 1985-04-16 1986-10-22 Teijin Ltd Polyester film

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60173719A (en) * 1984-02-17 1985-09-07 Fuji Photo Film Co Ltd Magnetic recording medium
JPH0473216B2 (en) * 1984-02-17 1992-11-20 Fuji Photo Film Co Ltd
JPS61237622A (en) * 1985-04-16 1986-10-22 Teijin Ltd Polyester film
JPH0358581B2 (en) * 1985-04-16 1991-09-05 Teijin Ltd

Similar Documents

Publication Publication Date Title
JPS5249029A (en) Silver halide color photographic light sensitive material
JPS5266405A (en) Optical recording system of information recording discs
JPS5267302A (en) Optical recording and reproduction device
JPS5341221A (en) Photographic light sensitive material
JPS5255424A (en) Information detection head of inforamation reader
JPS5687232A (en) Magnetic tape
JPS5337423A (en) Electrophotographic light sensitive material
JPS53106124A (en) Image recording by radiant ray
JPS539528A (en) Color photographic light sensitive material
JPS52123824A (en) Solid pikup element
JPS534541A (en) Photographic material for diffusion copying
JPS5271241A (en) Electrophotographic light sensitive material
JPS5220830A (en) Color photographic light sensitive material
JPS5315127A (en) Photographic light sensitive material
JPS52134425A (en) Photographic light sensitive material having layer dyed
JPS57150598A (en) Heat sensitive recording paper
JPS52136525A (en) Stripe filter and its manufacture
JPS53139511A (en) Magnetic recording medium
JPS5538548A (en) Partial color filter including blank margin
JPS5446426A (en) Input medium expressed by bar code to information processor
JPS52110628A (en) Color image reproduction and exposure setting calculating board
JPS5273741A (en) Multi-color electric sensitive recording medium
JPS5369004A (en) Optical recorder-reproducer
JPS5374034A (en) Electrostatic recording material
JPS5544619A (en) Information selection reading device