Sensor and device for examining sheet material, and sensor maintenance method

US8132454B2 · kind B2 · utility

Assignee

• GIESECKE & DEVRIENT GMBH · DE

Inventors

• Franz Nömmer · Dorfen, DE
• Michael Fiedler · Munich, DE
• Robert Klus · Birkenfeld, DE
• August Häusler · Wolfratshausen, DE

Key dates

• Filing date: Nov 8, 2007
• Grant date: Mar 13, 2012
• Expiry date: May 27, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G07D11/10
• WIPO field: Control
• WIPO sector: Instruments

Abstract

Sensor components having sides facing the sheet material have one or a plurality of front elements which are detachable and replaceable with low effort. So in the case of wear of the sensor fronts, entire sensor components no longer have to be replaced but only individual front elements of the sensor component are replaced. The front elements do not contact the inner area of the housing and the sensitive measuring elements arranged therein. When the front elements are detached from the housing for maintenance, the measuring elements remain dustproof encapsulated in the housing of the sensor component. The front elements preferably have a comb structure which improves the transport of the bank notes at the transition between the sensor components.