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:
Mar. 04, 2014
Filed:
Nov. 18, 2010
Dirk Kahl, Preetz, DE;
Karlheinz Peter, Molfsee, DE;
Rolf Spilz, Gettorf, DE;
Ulrich Schmidt, Preetz, DE;
Matthias Wecker, Bebra-Asmushausen, DE;
Dirk Kahl, Preetz, DE;
Karlheinz Peter, Molfsee, DE;
Rolf Spilz, Gettorf, DE;
Ulrich Schmidt, Preetz, DE;
Matthias Wecker, Bebra-Asmushausen, DE;
Eastman Kodak Company, Rochester, NY (US);
Abstract
A device for controlling substrate web tension includes first and second driving units with respective driving rollers around which the substrate web is partially guided and tensioned. The first and second driving units have different rotational moments of inertia. A measuring unit measures the tension of the substrate web. A control unit has first and a second filtering units with different filtering characteristics for filtering the measured value. The control unit includes a first control device for controlling the first driving unit based on the measured value filtered by the first filtering device, and a second control device for controlling the second driving unit based on the measured value filtered by the second filtering device.