Agfa-Gevaert

Agfa Gevaert Nv

Agfa Graphics Nv

Xeikon N.v.

Guido Vital Desie

Jacques Victor Leonard

Hilbrand Leopold Van Den Wijngaert

Dirk K Broddin

Ludo Joly

Luc H Leenders

Serge M Tavernier

Eric Verschueren

Luc J Vanmaele

Dirk Cyriel Quintens

Leo Oelbrandt

Andre Van Geyte

Eddie R Daems

Leon L Vermeulen

Roland Claes

Rene M De Keyzer

Stefaan Lingier

Leo N Vackier

Bavo A Muys

Luc K Van Aken

Willem Mues

Jan A Van Den Bogaert

Inge Schildermans

Patrick Albert Mertens

Erik Dekempeneer

Johan Vanbrabant

Michel Boulonne

Michael M Uller

Raf Voets

Ludovicus P Joly

Jan Van Bogaert

Luc Lemmens

Peter Bourbon

Francedillaois Backeljauw

G&uuml;nther Dieltjens

Marc Van Ostaeyen

Frans Backeljauw

Herman Debie

Frans Backaljauw

Raf Peymen

Luc Van Aken

Patrick Wouters

Roger Hendriks

Danny Van Gemert

Bo Hong

A method for making a composite membrane includes the steps of coating a first layer of ionomer on an intermediate support, laminating a dry porous support into the wet first layer of ionomer, impregnating the porous support with ionomer from the coated ionomer layer, optionally drying the impregnated porous support and the first layer of ionomer, coating a second layer of ionomer on the impregnated porous support, drying the second layer of ionomer until most of the solvent is evaporated, and delaminating the composite membrane from the intermediate support. The composite membrane thus obtained includes a porous support impregnated with the ionomer and on each side of the impregnated support a dense ionomer layer.

Method for preparing a composite membrane

A radiation curable ink-jet printing process is disclosed, exhibiting consistent image quality on a wide variety of different ink-receivers. The ink-jet printing process includes the steps of:

Dotsize control fluid for radiation curable ink-jet printing process

An ink-jet printing system including at least one ink-jet ink and a means for jetting an ink-jet ink onto a surface of a substantially non-absorbing ink-jet ink-receiver, characterized in that the ratio &#x3c3; S/&#x3c3; Lof the dispersive surface energy of said ink-receiver surface &#x3c3; Sover the dispersive surface energy of said ink-jet ink &#x3c3; Lis greater than 0.9. A process for ink-jet printing is also claimed. High areal throughput ink-jet printing (e.g. &#x3e;100 m/hour) with curable inks can be performed on different kinds of ink-receiver surfaces with a good image quality and colour density due to a controlled spreading of the ink-drops which can be directly cured.

Ink-jet printing system

The present invention relates to ink jet printing, and more particularly to a method of printing and an apparatus for providing images having grey levels of varying intensity. The present invention provides a method and device for printing grey scale images on a printing medium. The method includes delivering at least a number of first droplets of printing material of a color with a first volume from a first printhead and a number of second droplets of printing material of that color with a second volume from a second printhead, the first volume and the second volume being different, and merging together the number of first droplets and the number of second droplets on a target pixel position on the printing medium to obtain a given greyscale dot on the printing medium.

Method and device for printing grey scale images at high printing speed and image quality

A web material is disclosed comprising a substrate in web form and multiple microwells, arranged on the substrate in a predetermined pattern and separated from each other by separating zones, each microwell comprising a bottom and an upstanding surface formed by the adjacent separating zones, wherein the composition of the bottoms on the one hand and the composition of the separating zones and upstanding surfaces on the other hand show a different hyrophilicity.

Web material having wells for combinatorial applications

Methods and apparatus for rapid screening of layered materials, for a useful property. In the method at least two layered materials are applied on one single substrate. Preferably the materials are applied by coating from a coating composition and are multi-layered materials having at least two distinct layers.

Combinatorial coating for developing novel materials

A large format single pass printer, having a printing width (PW) for printing a toner image on a substrate, the substrate having a width (WS) and a length (LS), comprising a printhead structure with an array of printing apertures, with length, L,, and control electrodes associated therewith, a charged toner conveyer, CTC, with a length, L,&gE;L,and a number n, equal to or larger than 2, of toner applicators with width PWE,<L,for applying charged toner particles to said CTC, said number n being chosen such that

Device for large format printing comprising a single central conditioning unit for controlling and monitoring the condition of the developer

A device for direct electrostatic printing (DEP) is provided comprising a device having an external surface carrying toner particles for generating a flow of toner particles to an image receiving member and a printhead structure, having two major faces, interposed in the flow of toner particles for image-wise modulating this flow, wherein the external surface moves in a direction A and the printhead structure is kept at a constant distance, D, from that external surface by spacing elements forming an angle between 45&deg; and 0&deg; with direction A and being located at a distance d from each other such that 1 cm&lE;d&lE;50 cm. In a preferred embodiment the spacing elements are located at a distance d such that 5 cm&lE;d&lE;35 cm and the constant distance D is kept between 25 and 500 &mgr;m.

DEP (direct electrostatic printing) device maintaining a constant distance between printhead structure and toner delivery means

A method for printing an image on a substrate by image-wise depositing, toner particles on the substrate, is disclosed, comprising: image-wise depositing dry toner particles on the substrate forming a first band-like portion of the image, conditioning the first band-like portion while keeping the substrate at a temperature equal to or lower than 100&deg; C. and further image-wise depositing toner particles on the substrate so as to form at least one other band-like portion of such image, the at least one other band-like portion of the image being adjacent to the first band-like portion. Preferably the method is used for printing substrates with an area equal to or larger than 0.25 m,.

Method for electro (stato) graphic printing on large format substrates

A single pass printer, having a printing width (PW) is provided or printing a toner image on a substrate, the substrate having a width (WS) and a length (LS), wherein, i) a number n, equal to or larger than 2, of printing engines, each containing a toner transferring element with a longitudinal axis (width (WPE)) smaller than the printing width (PW) are present, and at least two of the n printing engines, each containing a toner transferring element with a longitudinal axis in the direction of width (WPE), are located so that the longitudinal axis do not coincide. Preferably the printing engines are electro(stato)graphic engines, especially Direct Electrostatic Printing (DEP) engines or electrophotographic engines.

Printer for large format printing

A DEP device is provided that comprises a printhead structure with control electrodes in combination with printing apertures and a magnetic brush assembly delivering a cloud of toner particles in the vicinity of the printing apertures, wherein the toner particles are, together with magnetically attractable carrier particles part of a multi-component developer further and the magnetic brush comprises a magnetic core rotating at a speed equal to or higher than 500 rpm (rotations per minute) and a sleeve rotating at a speed equal to or lower than 10 rpm (rotations per minute).

Direct electrostatic printing apparatus having a magnetic brush with a

A direct electrostatic printing device includes a printhead structure with apertures and control electrodes associated with the apertures for delivering toner from a toner source to a substrate in accordance with image data. A first voltage source is provided to establish a flow of toner particles from the toner source to the substrate. A second voltage source is provided to establish a control voltage between the toner source and the control electrodes to control toner flow in accordance with the image data. The second voltage source provides a first AC field between a toner source and the control electrodes to permit toner flow and a second, diminished, AC field between the toner source and the control electrodes in order to stop the toner flow.

Device for direct electrostatic printing with a conventional printhead

A Direct Electrostatic Printing (DEP) device is provided that includes a back electrode (105), a printhead structure having an insulating substrate (102), a control electrode (102a) and a slit aperture (103) through which a particle flow can be electrically modulated by the control electrode (102a), and a toner delivery means (101), in which control electrodes (102a) are present only on one side of the slit aperture. In a preferred embodiment the printhead structure is realized by a slit having two sides, side A (SA) and side B (SB), defined by two edges (A and B), which are formed by at least one sheet of insulating material. The insulating material has an elasticity modulus (Young's Modulus, YM) fulfilling the equation 0.1 GPa.ltoreq.YM.ltoreq.10 GPa and the edges A and B are placed with respect to each other at an angle .alpha. fulfilling the equation 0.degree..ltoreq..alpha.&lt;45.degree..

Direct electrostatic printing device having a printhead structure with

A printer, with printing width (PW), is provided, for printing toner image on a substrate, having a width (WS) and a length (LS), comprising a DEP printing engine, having

Printer for large format printing using a direct electrostatic printing

A single pass printer, having a printing width (PW) is provided for printing a toner image on a substrate, the substrate having a width (WS) and a length (LS), wherein, i) a number n, equal to or larger than 2, of printing engines, each containing a toner transferring element with a longitudinal axis (width (WPE)) smaller than the printing width (PW) are present, and at least two of the n printing engines, each containing a toner transferring element with a longitudinal axis in the direction of width (WPE), are located so that the longitudinal axis do not coincide. Preferably the printing engines are electro(stato)graphic engines, especially Direct Electrostatic Printing (DEP) engines or electrophotographic engines.

Growing community of inventors

Herent, Belgium

Guido Vital Desie