Xeikon N.v.

Xeikon Manufacturing N.v.

Xeikon International N.v.

Agfa Gevaert Nv

Xeikon IP B.v.

Punch Graphix International N.v.

Xeikon Manufacturing

Werner Op De Beeck

Serge M Tavernier

Lode Deprez

Michel Vervoort

Stefaan K De Meutter

August M Marien

Jean-Pierre A Ghekiere

Daniel Heitzmann

Geert Tersago

Sabine Vanhee

Karlien Torfs

Serge Tavernier

A toner comprising toner particles having at least one type of surface additive, the toner particles having an FPIA average circularity of at least 0.95, whereby at least 80% wt of the total amount of surface additives stays onto the surface of the toner particles when an ultrasonic treatment of 4500 to 4700 J/gram of toner is applied; a substrate printed or marked with the above-described toner; and a method for manufacturing a toner, said method including the steps of: mixing a binder resin, a colorant and optionally other additives, thereby forming a mixture, melting, kneading and milling said mixture, thereby obtaining a melted kneaded product, pulverizing said melted kneaded product, adding at least one surface additive before or while bringing the FPIA average circularity of said toner particles to 0.95 by modifying the shape or surface of said particles, wherein the total amount of surface additive does not exceed 2% wt of toner particles, whereby at least 80% wt of the total amount of surface additive stays on the surface of the toner particles when an ultrasonic treatment of 4500 to 4700 J/gram of toner is applied.

Dual component dual roll toner

A radiation curable toner is described having at least a radiation curable binder (e.g. a UV curable polymer), a photoinitiator, and a wax; wherein the wax is present in a concentration ranging from 0.3 to 3% by weight. The ratio of scratch resistance before curing is preferably at least 2. The toner may be used in a developer, e.g. a two-component developer, for printing or copying.

UV curable toner with improved scratch resistance

The present invention provides dry toner particles comprising at least a radiation curable resin, and a colouring agent, wherein the circularity of the toner particles is between 0.95 and 0.99 and a charge control agent in a concentration between 0.025% and 1.0% by weight is present preferably as an external additive. The toners of this invention are useful for printing any substrate and for use in any form of printing or marking device.

Rounded radiation curable toner

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

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

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

Dry toner particles comprising an amorphous complex macromolecular compound that contains in its macromolecular structure, (i) a polyester backbone (A) having a Tg of at least 45.degree. C. and (ii) at least one polymer chain (B) being attached to the backbone, either terminally and/or in a side-chain, the polymer chain (B) being derived from a polymer selected from the group consisting of polyolefines and polyolefines containing alkoxy groups which on itself has an average molecular weight by number (M.sub.avg) so that 1900.ltoreq.M.sub.avg &lt;4000, a melting point between 50.degree. C. and 150.degree. C. and a melting range of at most 15.degree. C.

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Putte, Belgium

Werner Op De Beeck