Sheet conveyor mechanism for reproducing apparatus

US4087177A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Peter Gumm · Königstein, DE
• Horst Witte · Hitzacker (Elbe), DE

Key dates

• Filing date: May 5, 1977
• Grant date: May 2, 1978
• Expiry date: May 5, 1997

Classification

• Technology area (CPC G): Physics
• CPC primary: G03B27/6257
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Disclosed is a sheet conveying mechanism for an original to be reproduced in a reproducing apparatus, comprising means, including a rotatable drum having an air-permeable circumferential shell surface, for supporting the original; non-rotatable means disposed within the drum for dividing the space within the drum and the circumferential shell surface of the drum into three separate regions; means associated with the drum for selectively producing positive and negative pressure within each of the separate drum regions; means for exposing and scanning the original, positioned adjacent a first one of said separate drum regions; means, associated with the drum and being responsive to movement of the original around the drum, for controlling the pressure-producing means; and first and second means, cooperating with the drum and located adjacent the circumferential shell surface of the drum in the area of a second one of the separate drum regions, for transporting the original around the drum.