Agfa Graphics Nv

Agfa Nv

Peter Bracke

Geert Van Dyck

Stefaan K De Meutter

Etienne A Van Thillo

David Tilemans

Joris Van Garsse

Davy De Vetter

Eddy Debaere

A method and an inkjet printing device for single pass printing on an ink-receiver having a surface includes a plurality of sets of nozzles for jetting N inks on the surface, wherein N is larger than or equal to one, the N inks including a first ink, and wherein the plurality of sets of nozzles includes a first and a second set of nozzles for jetting the first ink; the device further including a radiation curing device arranged to cure the first ink when jetted on the surface by the first set of nozzles, wherein the radiation curing device is positioned between the first set of nozzles and the second set of nozzles.

Apparatus and method for single pass inkjet printing

A radiation curable inkjet printing method for producing printed flexible foils and plastic bags wherein a web-like polymeric substrate having a maximum value for Tan &#x3b4; between 40&#xb0; C. and 110&#xb0; C. and a surface energy Sis printed upon using a single pass inkjet printer with a non-aqueous radiation curable inkjet liquid having a surface tension S, wherein Sis smaller than Sby at least 4 mN/m, and curing the radiation curable liquid on the substrate at a surface temperature equal or higher than the temperature of the maximum value for Tan &#x3b4; and smaller than the melting point of the polymeric recording medium. A single pass inkjet printer is also disclosed.

Single pass radiation curable inkjet printing methods for producing printed flexible foils and plastic bags

A single pass inkjet printing method includes the steps of: a) providing a radiation curable inkjet ink set containing at least a first and a second radiation curable inkjet ink having a dynamic surface tension of no more than 30 mN/m measured by maximum bubble pressure tensiometry at a surface age of 50 ms and at 25&#xb0; C.; b) jetting a first radiation curable inkjet ink on an ink-jet ink-receiver moving at a printing speed of at least 35 m/min.; c) at least partially curing the first inkjet ink on the ink receiver within the range of 40 to 500 ms after the first inkjet ink landed on the ink receiver; d) jetting a second radiation curable inkjet ink on the at least partially cured first inkjet ink; and e) at least partially curing the second inkjet ink within the range of 40 to 500 ms after the second inkjet ink landed on the first inkjet ink.

Single pass inkjet printing method

An ink supply system for an industrial inkjet printer makes use of a least one buffer vessel wherein ink at low pressure is isolated and pressurized to a high pressure suited for feeding the ink to the printhead. A recirculation ink supply system using plural buffer vessels is suited for repressurizing the ink without the use of a pump. The system avoids generation of gas bubbles due to cavitation which are present in systems using a pump for repressurizing ink.

Ink supply system without pump, for ink jet printer with ink recirculation system

An image processing method includes a step of converting halftoned pixels of an image to be printed represented at a first lower tonal resolution into pixels represented at a second higher tonal resolution. Image processing is used on the pixels having a higher tonal resolution to reduce image quality artifacts when the pixels are printed at the first lower tonal resolution. In a preferred embodiment, the image processing includes error diffusion of a sigma delta modulation.

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Drongen, Belgium

Peter Bracke