Magnetic recording media comprising a back coat containing a mix

Details Magnetic recording media comprising a back coat containing a mix Magnetic recording media comprising a back coat containing a mix

1991-09-03

1994-12-13

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

428323, 428694BC, 428900, G11B 566, B32B 516

Patent

active

053728947

ABSTRACT:
A magnetic recording medium comprising a non-magnetic substrate, a magnetic layer formed at one surface of the substrate, and a back coat layer formed at the other surface of the substrate wherein the back coat layer contains a thermosetting resin and a photosetting resin and its light transmittance is at least 1%. A process for producing a magnetic recording medium which comprises the steps of applying a back coat layer containing a thermosetting resin and a photosetting resin and having a light transmittance of at least 1% to one surface of a non-magnetic substrate; irradiating the back coat layer with a light from both surfaces to carry out photosetting; applying a magnetic layer to the other surface of the non-magnetic substrate; winding the double-coated substrate in the form of a roll; and thermosetting the back coat layer. The magnetic recording media having excellent characteristics can be easily obtained without requiring any complicated apparatus.

REFERENCES:
patent: 4047232 (1977-09-01), Hisagen et al.
patent: 4567083 (1986-01-01), Arioka et al.
patent: 4702959 (1987-10-01), Shimozawa et al.
patent: 4713278 (1987-12-01), Yoda et al.
patent: 4789583 (1988-12-01), Akutsu
patent: 4794040 (1988-12-01), Ojima et al.
patent: 4803120 (1989-02-01), Ogawa et al.

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