Digital printing system with improved toner removal

US9164412B2 · kind B2 · utility

Assignee

• Xeikon IP B.V. · NL

Inventors

• Nick Horemans · Noorderwijk, BE
• William Waterschoot · Belsele, BE
• Wim Libaers · Boortmeerbeek, BE
• Lode Erik Dries Deprez · Wachtebeke, BE
• Jurgen Norbert Bart Devlieghere · Borgerhout, BE

Key dates

• Filing date: Apr 3, 2014
• Grant date: Oct 20, 2015
• Expiry date: Apr 3, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G15/11
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A digital printing apparatus comprising a developing roller (102) and an image carrying roller (101); the developing roller (102) being arranged to transfer liquid toner (107) onto the image carrying roller (101) in accordance with a charge pattern; an upstream charger (111) upstream of an area (108) of rotational contact between the developing roller (102) and the image carrying roller (101); a downstream discharger (112, 122, 132) downstream of the area (108); a sensor (200) downstream of the area (108) to detect a property representative of the charge of a liquid toner residue; and a controller (210) to receive sensor data from the sensor (200) and to provide a control signal to control the downstream discharger.