Digital printer with supply arrangement to supply print groups with fluids and to accept used and unconsumed fluids

US9134655B2 · kind B2 · utility

Assignee

• Océ Printing Systems GmbH & Co. KG · DE

Inventors

• Martin Berg · Poing, DE
• Otto Ferber · Germering, DE
• Franz Kastner · Munich, DE
• Attila Bogdan · Rattenkirchen, DE

Key dates

• Filing date: Oct 28, 2013
• Grant date: Sep 15, 2015
• Expiry date: Feb 7, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G2215/00021
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

In a digital printer, print groups are provided each having a respective developer station using liquid developer comprising carrier fluid and toner. A supply arrangement to supply the print groups is provided with fluids and to accept used and unconsumed fluids from the print groups. The supply arrangement has a first supply unit common to all print groups to supply the print groups with the fluids, at least one reservoir containing a carrier fluid. A second supply unit per color supplies the respective print group for the color with liquid developer. The second supply unit comprises a first buffer container connected with a reservoir, the reservoir containing carrier fluid and concentrated toner as toner concentrate. A second buffer container for carrier fluid is connected with the carrier fluid reservoir in the first supply unit. A mixing unit is connected with the first and second buffer containers for mixing together the liquid developer, the mixing unit being connected via a feed pump to supply the liquid developer for the color to the respected developer station of the respective print group.