Production of magnetic recording medium

Details Production of magnetic recording medium Production of magnetic recording medium

1993-07-20

1994-03-29

Pianalto, Bernard D.

Coating processes

Magnetic base or coating

Magnetic coating

427132, 427296, 4272553, 4272557, 427257, B05D 512

Patent

active

052982823

ABSTRACT:
A method for producing a magnetic recording medium having a magnetic layer having a two-layered structure positioned on a substrate, which includes forming the magnetic layer on the substrate by a vacuum deposition process during the travel of the substrate on a cylindrical can, wherein a first evaporation source and a second evaporation source are positioned on the same side of a vertical line passing across a longitudinal axis of the cylindrical can while confronting the cylindrical can, a shield plate having a first opening and a second opening is positioned between the cylindrical can and the first and second evaporation sources, each of vapors evaporated from the first and second evaporation sources passes through the first and second openings, respectively, a distance between the vertical line passing across the longitudinal axis of the cylindrical can and a center of an evaporation part of the first evaporation source is longer than a radius of the cylindrical can, and a distance between the vertical line passing across the longitudinal axis of the cylindrical can and a center of an evaporation part of the second evaporation source is shorter than a radius of the cylindrical can.

REFERENCES:
patent: 5122392 (1992-06-01), Takeuchi et al.

Affiliated with

Also associated with

Rating

Production of magnetic recording medium does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Production of magnetic recording medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of magnetic recording medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-790111