Device for measuring small changes in the thickness profile of b

Details Device for measuring small changes in the thickness profile of b Device for measuring small changes in the thickness profile of b

1988-02-18

1989-04-18

Levy, Stewart J.

Measuring and testing

Sheet, woven fabric or fiber

G01B 506

Patent

active

048215651

ABSTRACT:
There is described a method and apparatus for measuring small changes in the thickness profile of band-shaped or web material wound onto a reel, such as photographic base paper. The invention includes a measuring sensor with a scanning tip. The measuring sensor is positioned in the center of the rectangular block. The block and sensor are supported in a movable manner in a casing which is moved in an axial direction over the surface of the reel. The length of the block preferably contributes a mechanical amplification of the sensed variation in thickness profile of the web material.

REFERENCES:
patent: 4513613 (1985-04-01), Darves-Bornoz et al.

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