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:
Apr. 07, 2015
Filed:
Dec. 19, 2011
Applicant:
Steffen Schmalz, Munich, DE;
Inventor:
Steffen Schmalz, Munich, DE;
Assignee:
Giesecke & Devrient GmbH, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/00 (2006.01); G01N 21/15 (2006.01); G01N 21/88 (2006.01); G01N 21/86 (2006.01); G07D 7/18 (2006.01);
U.S. Cl.
CPC ...
G01N 21/8806 (2013.01); G01N 21/86 (2013.01); G01N 2021/157 (2013.01); G07D 7/187 (2013.01);
Abstract
A method carries out a soiling check of the measurement window of a measuring device for checking sheet material. A measuring device carries out the method. A device for processing a sheet material comprises the measuring device. The soiling check uses, only areas of the measurement window which correspond, in terms of width and position in the beam path of a light, to the areas of the checked sheet material which are checked during the checking of the sheet material. As a result, fewer cleaning steps are needed for the measurement window.