Duplex printing system

US6912952B1 · kind B1 · utility

Assignee

• Hewlett-Packard Indigo B.V. · NL

Inventors

• Benzion Landa · Nes Ziona, IL
• Yosef Rosen · Afula, IL
• Aron Shmaiser · Nesher, IL
• Lior Lewintz · Pardes Hana-Karkur, IL
• Yevgeny Korol · Netanya, IL
• Alex Feygelman · Netanya, IL
• Alon Gazit · Nes Ziona, IL

Key dates

• Filing date: Feb 7, 2000
• Grant date: Jul 5, 2005
• Expiry date: Feb 7, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G15/234
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Apparatus for duplex printing comprising: a first impression roller (24) on which a first side of a sheet (22) having a leading edge and a trailing edge is printed referenced to the leading edge; a second impression roller (26) on which a second side of the sheet is printed; and a transport system (20) that removes a printed sheet from the first impression roller (24) and transports it to the second impression roller (26), the transport system comprising a perfector (32) that receives the sheet and grips it along both the leading and trailing edges of the sheet, which perfector turns the sheet over and transfers the sheet trailing edge first towards the second impression roller.