Fujifilm Imaging Colorants, Inc.

Mohammed Nawaz

Martin Edwards

Daniel Morris

John Dylan Morgan

Oliver Callaghan

Simon Pickard

Miguel Angel Rodriguez-Vazquez

Zoonia Mehmood

Martin Russell Edwards

Daniel Patrick Morris

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 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.

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Manchester, United Kingdom

Mohammed Nawaz