Agfa Gevaert Nv

Agfa-gevaert

Xeikon N.v.

Xeikon International N.v.

Other

Texas Instruments Corporation

Agfa-gevaert Ag

Afga-gevaert Nv

Agfa-gavaert N.v.

Hologi Hitec-imaging Gmbh

Xeikon International

Serge M Tavernier

Werner J Op De Beeck

Stefaan K De Meutter

Robert F Janssens

Dirk K Broddin

Werner Op De Beeck

Danny Van Wunsel

August M Marien

Jean-Pierre A Ghekiere

Luc K Van Aken

Marc A De Niel

Daniel Heitzmann

Paul J Coppens

Jean-Marie O Dewanckele

Guido Vital Desie

Luc Van Goethem

Pierre R De Roo

Geert Tersago

Gerrit Delen

Paul Marksch

Luc H Leenders

Luc J Vanmaele

Piet Kok

Robert Theodoor Overmeer

Jan A Zwijsen

William Constant Waterschoot

Jozef L Mampaey

Frank Ruttens

Paul F Sterckx

Michel Vervoort

Raphael Voets

Mario Verbruggen

Rainer Bellinghausen

Herman J Uytterhoeven

William E Nelson

James M Florence

Michael Mager

Carlo A Uyttendaele

Leon L Vermeulen

Leo N Vackier

Ludovicus H Vervloet

Jacques Victor Leonard

Ludo Joly

Eddy A Michiels

Ronny De Clercq

Andre Verhecken

Hilbrand Leopold Van Den Wijngaert

Marc P Stevens

Robert Cyriel Van Haute

Leo B Alaerts

Michel Boulonne

Ludovicus P Joly

Raf Voets

Bart Diels

Johannes Eickmans

James St Clair

Vadlammanti Venkateswar

Gustaaf Piron

Bart Van Hove

Pierre L Van Daele

Hans-Josef Humpert

Sabine Vanhee

Joannes J Van Beek

Luc Van Aken

Hedwig E De Deyne

Kerstin Hymon

Marcel F Verbeek

Mikolaas C De Jaeger

Hans Karl Van Cauwenberghe

Werner O De Beeck

Andr E Verhecken

Gustaaf Van Tendeloo

Peter Van Rompuy

Theophiel Stuer

The invention relates to a liquid developer composition comprising a dispersant, and toner particles dispersed in said dispersant. The liquid developer composition can be used for printing onto a substrate. The binder resin in the toner particles is curable, e.g. by UV-light.

Liquid developer composition and method of its preparation

A method and system for reproducing an image on a carrier, the method includes: generating a conjoined first and second sub-image, each representative for a portion of the image; defining an overlap region where both sub-images give a contribution to the internal optical density of the carrier; dividing the overlap region in a partition of microdots; establishing for each sub-image a peripheral edge in the overlap region; increasing the contribution by the first sub-image from the peripheral edge of the first sub-image to the peripheral edge of the second sub-image; and assigning to at least one microdot an intermediate microscopic density different from a minimum or maximum microscopic density of microdots; wherein the contribution increases the microscopic density of the microdots by density steps smaller than half the difference between the minimum and maximum microscopic densities of the microdots.

Screening method for overlapping sub-images

The present invention relates to a dry toner composition suited for development of electrostatic charge images, magnetic patterns or DEP (Direct Electrostatic Printing). More specifically the present invention relates to a specific toner composition allowing fusing of the toner image to the final substrate at low temperature.

Dry toner composition

The present invention relates to a liquid toner composition suited for development of electrostatic charge images, magnetic patterns or DEP (Direct Electrostatic Printing). More specifically the present invention relates to a specific liquid toner composition allowing transfusing of the toner image from a temporary carrier to the final substrate at low temperature.

Liquid toner composition

For the reproduction of originals, images are generated on an image carrier, for example by printing. The imaging device that generates the image is usually not capable to cover at once the complete image area on the carrier. If the device is capable to cover the full width of the image area, the image may be generated line by line. Devices not having this capability will generate a first portion of an image line on the carrier. An adjacent second portion of the image line is then generated by another imaging device or after a period of time by the imaging device that generated the first portion. The region where the first and second portion meet on the carrier may cause visual artefacts on the final reproduction due to spatial misregistration of the adjacent line portions. This problem is solved by dividing the image in adjacent sub-images having an overlap zone on the carrier. Within this overlap zone two sub-images will be generated on top of each other for reproducing the original image in that zone, thereby reducing or avoiding the artefacts. According to one method, the resulting optical density of the first and second sub-image is reduced within the overlap zone as the outer edge of the sub-image in the overlap zone is approached. The density reduction may be achieved by reduction of the microscopic density of individual microdots or by reduction of the dot percentage or by a combination of these techniques.

Dry toner particles are provided wherein the toner resin includes a mixture of two polymer A and B, A and B being chosen such that an extruded slab with thickness 250 &mgr;m of a 50:50 mixture of both has a transmission density (D ) being between 0.10 and 1.00 higher than the sum of half the transmission density of a 250 &mgr;m extruded slab of polymer A alone (D ) and half the transmission density of a 250 &mgr;m extruded slab of polymer B alone (D ). The polymers A and B are mixed in a weight ratio between 5:1 to 1:5 and make up at least 25% by weight of the total toner resin. The polymer A is a polyester and the polymer B is a polyester or a specified styrene-acrylic copolymer.

Electrostatically and/or magnetically attractable toner powder

Carrier particles having a coating comprising a polycondensation network containing a chemical compound selected from the group consisting of a monomeric polyfunctional organosilane, an hydrolysis product of a monomeric polyfunctional organosilane, a reaction product of a monomeric polyfunctional organosilane with an organosilane containing an hetero-atom and a reaction product of a monomeric polyfunctional organosilane with an alkoxide, characterized in that the coating further comprises between 5% and 50%, by weight, both limits included, of a polymeric compound not containing silicon atoms.

Hybrid carrier coating containing a silane network and a polymeric compound not containing silicon atoms

Finely divided particles can be provided in a simple manner and with good adhesion with a coating which is a polyfunctional organosilane and/or a hydrolysis product thereof, and/or a reaction product thereof with an organosilane which contains a hetero atom and/or with an alkoxide.

Coated particles containing a monomeric, polyfunctional organosilane coating

Fusing member for hot pressure fixing of toner particles and for transfusing toner particles

A method for rounding thermoplastic particles whereby the thermoplastic particles are stirred at a temperature around their plastification temperature, T,, together with particles that are larger than the thermoplastic particles and that have a higher specific gravity.

Method for producing rounded polymeric particles

Method for electrostatographically producing master images for decoration of ceramic objects

Dry toner particles with a resinous matrix containing a mixture of a polymer (LPC) with low softening point and tg&dgr;>3, modified by a modifier (D) selected from the group consisting of long chain aliphatic compounds with a reactive end group and having between 20 and 250 carbon atoms and a polysiloxane, said modifier and said polymer being present in a molar ratio LPC/D between 0.8 and 1.25 and a non-linear polymer with a softening point T,such that 110&deg; C.&lE;T,&lE;135&deg; C. The toner particles further contain a wax chosen from waxes having a melting point near to the softening point of the branched polymer B.

Toner particles containing a mixture of a modified linear polymer, a cross-linked polymer and a wax

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

Method for stable electro (stato) graphic reproduction of a continuous tone image

A method and device for printing a reproduction of an image by using toner particles, in which digital image data of at least two density separations of the image is obtained for forming at least two sub-images. The image data of a first sub-image of the sub-images is provided to a printing station containing toner particles with a particular chromaticity and a particular optical density. Then, the first toner particles are applied in an image-wise manner on an image receiving member for forming a first toner image in correspondence with the image data. Thereafter, on the same printing station and using second toner particles having a chromaticity substantially equal to the particular chromaticity and an optical density substantially equal to the particular optical density, the image data is again provided and the toner particles are again applied for bringing at least one second toner image, corresponding to a second sub-image, on the image receiving member in register with the first toner image.

Method for printing continuous tone images with high density resolution

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Lint, Belgium

Serge M Tavernier