Coating processes – Magnetic base or coating – Magnetic coating
Patent
1972-08-14
1977-08-23
Pianalto, Bernard D.
Coating processes
Magnetic base or coating
Magnetic coating
427128, H01F 1002
Patent
active
040441741
ABSTRACT:
A layer of magnetic particles in a resin binder on a carrier is smoothed by effecting relative movement between the carrier and a vibrating ultrasonic horn having a surface in contact with the layer. The carrier can be a web of fully coated magnetic tape or of striped motion picture film; and can be passed over a solid metal anvil or can be drawn tautly over the horn without requiring an anvil. The horn can be perpendicular to the carrier for hammering the layer; or it can be essentially parallel to the surface of the carrier, and either transversely or longitudinally extending, for scrubbing the layer smooth. The smoothing procedure can also be performed while the carrier is immersed in a solvent for removing dirt particles. Advantageously the procedure is performed when the binder is fresh and less than fully cured; but it can also be performed by heating a resin binder to the desired plasticity before the smoothing operation.
REFERENCES:
patent: 2097601 (1937-11-01), Potdevin
patent: 2200155 (1940-05-01), Camp et al.
patent: 2252345 (1941-08-01), Johnson
patent: 2522082 (1950-09-01), Arnold
patent: 2778744 (1957-01-01), Holt
patent: 3012901 (1961-12-01), Reese
patent: 3023123 (1962-02-01), Colwill et al.
patent: 3104983 (1963-09-01), Tarwater et al.
patent: 3261706 (1966-07-01), Nesh
patent: 3533836 (1970-10-01), Messengale
patent: 3676216 (1972-07-01), Abitboul
patent: 3817785 (1974-06-01), Abitboul
Eastman Kodak Company
Matthews J. A.
Pianalto Bernard D.
LandOfFree
Ultrasonically smoothing a magnetic layer on a web does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonically smoothing a magnetic layer on a web, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonically smoothing a magnetic layer on a web will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2316325