Method for inspecting magnetic disk cartridge

Details Method for inspecting magnetic disk cartridge Method for inspecting magnetic disk cartridge

1991-12-31

1993-02-02

McGraw, Vincent P.

Optics: measuring and testing

By inspection with agitation or rotation

250561, 356237, 356379, G01N 2188, G01B 1128

Patent

active

051841975

ABSTRACT:
In a method for inspecting a magnetic disk cartridge, the state, with which an adhesive agent has been applied as an annular layer onto a flange of a center hub in order to adhere a magnetic disk body and the flange of the center hub to each other, is inspected. A collimated light beam is irradiated to a cross section of the layer of the adhesive agent, which cross section is taken in the radial direction of the center hub, from a direction which is parallel to the surface of the flange and which is perpendicular to the cross section of the layer of the adhesive agent. The collimated light beam has a beam diameter such that the whole cross section may be included in the beam diameter. The amount of the collimated light beam, which has passed through the region in the vicinity of the flange, is detected. The area of the cross section of the layer of the adhesive agent is calculated from the detected amount of the collimated light beam, which has passed through the region in the vicinity of the flange. Thereafter, the amount of the adhesive agent, which has been applied onto the flange, is investigated from the results of the calculation.

REFERENCES:
patent: 4676648 (1987-06-01), Schulz et al.
patent: 5073951 (1991-12-01), Hayashi

Affiliated with

Also associated with

Rating

Method for inspecting magnetic disk cartridge does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for inspecting magnetic disk cartridge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for inspecting magnetic disk cartridge will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-10094