High speed coating process for magnetic disks

Details High speed coating process for magnetic disks High speed coating process for magnetic disks

1984-07-26

1985-11-05

Pianalto, Bernard D.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427128, 427130, 427425, 427427, H01F 1002

Patent

active

045513554

ABSTRACT:
A disk is rotated at high speed on a spindle while fluid carrying magnetic medium material is applied to the disk through a dispensing nozzle which starts at the outside diameter of the disk and travels to the inside diameter, pauses momentarily, and then travels back to the outside diameter. As the fluid is applied, a thin film of medium material adheres to the disk while the excess fluid forms a protective coating over this thin film as it flows radially off of the disk due to the centrifugal force generated by the high speed of rotation. The nozzle discharge pressure and the high rotational speed of the disk result in a very thin film of magnetic medium material being applied to the disk. The rate of nozzle travel can be adjusted to vary the medium material film thickness. Immediately following the high speed coating application step the speed of the disk is substantially reduced and the disk is exposed to a magnetic orienting field during an orientation step. The speed of the disk is then increased again during a very short drying step.

REFERENCES:
patent: 4001463 (1977-01-01), Schaefer et al.

Affiliated with

Also associated with

Rating

High speed coating process for magnetic disks does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High speed coating process for magnetic disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High speed coating process for magnetic disks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-295577