Arrangement for transporting web-shaped materials to be scanned

Details Arrangement for transporting web-shaped materials to be scanned Arrangement for transporting web-shaped materials to be scanned

1993-01-22

1995-05-09

Stodola, Daniel P.

Advancing material of indeterminate length

By orbitally traveling material-engaging surface

With drive means

74421A, 476 66, 476 73, B65H 2000, F16H 112

Patent

active

054132657

ABSTRACT:
An arrangement for driving at least one roller of a roller unit for transporting web-shaped materials, such as X-ray sheet films or stimulatable phosphorous foils with substantially constant speed in a device for exposing or scanning these materials, the arrangement comprising a stepping motor having a motor output shaft, a friction drive having a drive input shaft, and a vibration damping mechanism provided between said motor output shaft and the drive input shaft. The drive is formed so that a ratio of the drive and a diameter of the roller is selected so that at least 20 steps of the stepping motor corresponds to a transporting path of the web-shaped material of one millimeter.

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