Guiding device for a freshly printed sheet

US5988633A · kind A · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Manfred Henn · Heidelberg, DE
• Werner Kaul · Dossenheim, DE
• Martina Vettermann · Mauer, DE

Key dates

• Filing date: Apr 8, 1997
• Grant date: Nov 23, 1999
• Expiry date: Apr 8, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2801/31
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A guiding device for a freshly printed sheet has a sheet-guiding surface, which is located at a distance from an imaginary conveying surface. The sheet has a leading edge, which sweeps over the imaginary conveying surface along a sheet transport direction perpendicular to the leading edge of the sheet. The sheet-guiding surface is formed on a guide-plate arrangement and has blast-air openings. The sheet-guiding surface includes blast-air nozzles of a first nozzle configuration and of at least a second nozzle configuration. The blast-air nozzles of the first nozzle configuration produce air-jets that sweep over the sheets and are aligned with respect to the sheet transport direction. The blast-air nozzles of the second nozzle configuration produce rotational flows sweeping over the sheets.