Device for verifying documents

US6892946B2 · kind B2 · utility

Assignee

• BUNDESDRUCKEREI GMBH · DE

Inventors

• Robert Massen · Schallstadt, DE
• Thomas Franz · North Canton, US
• Thomas Leitner · Dortmund, DE
• Jörg Eberhardt · Tettnang, DE

Key dates

• Filing date: Nov 27, 2002
• Grant date: May 17, 2005
• Expiry date: Nov 27, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G07D7/121
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A document-examining apparatus is provided for automatically examining the authenticity elements of secured documents. It includes a compound slide which can be moved in the X and Y directions and on which the components required to evaluate the distinguishing authenticity features are mounted. The X slide of the compound slide is mounted on a Y slide. A first group of evaluating units for evaluating diffraction elements on a document is disposed on the X slide. A second group of evaluating components, for example, for evaluating text, an IR field and/or a photographic field, may be mounted on the Y slide. In addition, a source of UV radiation may be provided for examining distinguishing fluorescence features of a document, the fluorescence being evaluated by a stationary evaluating unit or by the evaluating unit on the X slide.