The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 1995
Filed:
Jan. 22, 1993
Werner Stahl, Heimstetten, DE;
Volkmar Voigtlaender, Eichenau, DE;
Agfa-Gevaert A.G., Leverkusen, DE;
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.