Device and method for sensing the position of an edge of a product

US7115889B2 · kind B2 · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Torsten Koker · Mannheim, DE
• Hans Butterfass · Heidelberg, DE
• Wolfgang Dolz · Heidelberg, DE
• Andeas Henn · Neckargemünd, DE
• Tobias Mueller · Gelnhausen, DE

Key dates

• Filing date: Jun 1, 2004
• Grant date: Oct 3, 2006
• Expiry date: Aug 9, 2024

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2701/131
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

According to one exemplary embodiment of the present invention, a method for sensing the position of an edge of a stock being feed to a printing press is provided. The method includes the steps of providing a light source, utilizing the light source to illuminate with planar radiation a preselected area of the stock, and a preselected area adjacent to the stock, and further providing a retro-reflecting surface on at least a portion of the preselected area adjacent to the stock illuminated by the light source. According to a feature of the present invention, a measuring device is provided and utilized to measure radiation reflected by the retro-reflecting surface.