| 摘要 |
PURPOSE:To improve a traveling property and durability by forming a monomolecular film consisting of one kind of compd. selected from chain compds. or the metal salt of said compds. on a magnetic layer and providing a lubricating layer consisting of one kind of compd. selected from nonpolar chain compds. on said film. CONSTITUTION:The magnetic layer 10 consisting of a thin ferromagnetic metallic film having 1,500Angstrom thickness is formed on a polyester film substrate 1 having 10mum thickness by heating and evaporating Co under vacuum in a vacuum deposition vessel. The substrate 1 on which the magnetic layer 10 is formed is then run along guide rolls 3 from a supply reel 2 and is then taken up on a take-up reel by using a monomolecular film forming device of a Langmuir- Blodgett technique. pH of the water 6 in the water tank 5 is adjusted to 7.0 and a soln. prepd. by dissolving stearic acid in chloroform is dropped from a nozzle 7 onto the water surface. The surface pressure is adjusted to 30mN/m by means of a barrier 8 and spring 9 and the monomolecular film 11 is formed on the magnetic layer 10 of the substrate 1. The monomolecular layer of the stearic acid and the lubricating layer of octadecyl acetate are then formed thereon and the substrate is cut to a prescribed width. |
