Sheet guide arrangement in sheet-fed machines

US4572073A · kind A · utility

Assignee

• MAN Roland Druckmaschinen AG · DE

Inventors

• Rudolf Mitze · Dietzenbach, DE
• Claus Simeth · Mühlheim, DE

Key dates

• Filing date: Nov 19, 1984
• Grant date: Feb 25, 1986
• Expiry date: Nov 19, 2004

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2601/251
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A system for remote sensing, indicating and remote control provides for the non-smear guidance of sheets through a sheet-fed machine and is especially useful for printing machines which print on both sides of the sheets. Sheet guides are adjustable during machine operation from a control panel at a central location outside of the machine. The positions of the sheet guides are preferably displayed in direct comparison with zones of ink application. Also, the sheet guides are adjustable from the control panel so that the guides fall within the gaps between printed areas on the sheet. An immediate and graphic check of the sheet guides is provided. In a preferred embodiment, the positions of the sheet guides are indicated on a linear array of optical indicators, each indicator representing a respective boundary between adjacent inking zones, and two adjacent ones of the optical indicators being simultaneously activated when one of the sheet guides is adjusted approximately at the center of the inking zone defined by the boundaries represented by the two adjacent ones of the optical indicators.