Fujifilm Imaging Colorants, Inc.

Avecia Limited

Vantico Limited

Martin Edwards

Daniel Morris

Mohammed Nawaz

John Dylan Morgan

Oliver Callaghan

Simon Pickard

Miguel Angel Rodriguez-Vazquez

Zoonia Mehmood

Herbert Benson Scher

Ian Malcolm Shirley

Philip John Double

Janette Cordwell

Alan Hopper

Ajay Popat

William Malcolm Logan Wood

Dianne Beth Shirley

Alison Dawn Bedells

Kumar Abhinava

Kevin Thomas McAloon

Philip Double

A process for printing a substrate comprising applying thereto an ink by means of an ink jet printer, wherein the ink comprises a latex binder, a liquid medium comprising water and organic solvent, and polymer-encapsulated pigment particles comprising a carboxy-functional dispersant crosslinked around a pigment core by a crosslinking agent, wherein the ink has a minimum film-forming temperature below 70&#xb0; C. Inks are also claimed. The process and inks are useful for printing temperature-sensitive substrates, e.g. foil balloons and wrapping materials for special occasions.

Inks and printing process

According to a first aspect of the present invention there is provided a process for preparing a particulate solid comprising the steps i) to iv): i) providing a dispersion of polymer particles in a liquid medium, said polymer being obtained or obtainable by the copolymerization of at least the monomers in components a) to d): a) 45 to 90 parts of one of more hydrocarbyl (meth) acrylates each having a homopolymer Tof from 90 to 130&#xb0; C. and having no hydrophilic groups; b) 10 to 55 parts of one or more ethylenically unsaturated monomers each having homopolymer Tof below 90&#xb0; C. and having no hydrophilic groups; c) 0 to 40 parts of one or more styrenic monomers having a homopolymer Tof at least 90&#xb0; C. and having no hydrophilic groups; d) 0 to 10 parts of one or more ethylenically unsaturated monomers each having at least one hydrophilic group; wherein all the parts are by weight; ii) associating the particles to form clusters of particles; iii) optionally stabilizing the clusters; iv) heating the clusters above the glass transition of the polymer.

Process for preparing a particulate solid, a particulate solid and a dispersion

A process for preparing a toner comprising a binder resin and a colorant, wherein the binder resin comprises a polyester resin having an acid value (AV) greater than 5 mg KOH/g, the process comprising: providing an aqueous dispersion of self-dispersed polyester resin particles and associating the polyester resin particles by means of a change in the pH of the dispersion.

Toner comprising polyester, process for making the toner and uses thereof

A toner comprising toner particles which comprise binder resin and colorant, wherein the binder resin is made from latexes which comprise a low molecular weight (LMW) latex of resin particles having a weight average molecular weight (Mw) less than 50,000 and a medium molecular weight (MMW) latex of resin particles having a Mw from 50,000 to 500,000, wherein the glass transition temperature (Tg) of the resin particles of the LMW latex is not greater than 52&#xb0; C.

Toners made from latexes

A process for preparing a toner comprising a binder resin and a colorant, wherein the binder resin comprises a polyester resin having an acid value greater than 5 mg KOH/g, the process comprising: providing an aqueous dispersion of polyester resin particles stabilized by an ionic surfactant and then associating the polyester resin particles.

The invention provides a process for the manufacture of a toner which comprises the steps of: wherein R is a carbocyclic or heterocyclic radical which may be optionally substituted and Zis a bond or linker groupand wherein the amount of carboxy functional compound of Formula (1) provided is greater than 3% by weight, the amount of carboxy functional compound being calculated according to the following equation:  The process advantageously may produce a toner of small size and narrow particle size distribution. The present invention also provides a toner manufactured by the process.

Toner and manufacturing process therefor

The invention provides a process for the manufacture of a toner which comprises the steps of: wherein R is a carbocyclic or heterocyclic radical which may be optionally substituted and Zis a bond or linker group,on condition that the amount of carboxy functional compound of Formula (1) provided in acid and/or salt form is at least 1.5% by weight, wherein the amount of carboxy functional compound is calculated according to the following equation:  The process advantageously may produce a toner of small size and narrow particle size distribution. The present invention also provides a toner manufactured by the process.

A toner for developing an electrostatic image comprising toner particles which include a binder resin, a wax and a colorant, wherein the wax has a melting point of between 50 and 150&#xb0; C., the wax exists in the toner particles in domains of 2 &#x3bc;m or less mean particle size and (a) the mean circularity of the toner particles as measured by a Flow Particle Image Analyser is at least 0.90; and (b) the shape factor, SF1, of the toner particles is at most 165. A process for the manufacture of said toner which comprises the following steps: providing a latex dispersion; providing a wax dispersion; providing a colorant dispersion; mixing the latex dispersion, wax dispersion and colorant dispersion; and causing the mixture to flocculate.

Chemically produced toner and process therefor

A process is provided for producing a polymeric layer having a desired image thereon or a three dimensional article comprising a number of such layers in which a layer of a liquid photocurable composition which comprises photo colorable particles is cured by light and selected areas thereof are irradiated with light of a different dose, thereby forming the desired image which composition comprises particles dispersed in it which are micro-capsules containing a photosensitive color changing composition within a barrier layer which is substantially impermeable to the components of the color changing composition or are solid particles comprising an immobilized photosensitive color changing composition. The process permits the use of the same initiating mechanism to cure the resin and to change the color of the particles.

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Manchester, United Kingdom

Martin Edwards