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Inventor: Michael A. Hopper


Address: Toronto, CA
No. of patents: 57
Last patent issue date: 10/30/2007

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NumberTitleIssue Date
7288347Method of applying spot varnish to xerographic image and emulsion aggregation toners for use therein
A method of forming a xerographic image having at least one portion with a gloss different from a gloss of another portion of the xerographic image includes xerographically forming a toner image on a surface of a substrate and forming a finish over the toner image a...
10/30/2007
7052730Document security processes
A process for generating on a substrate, such as a document, a security mark comprised of a glossy ink containing a colorant. ...
05/30/2006
7049042Toner processes
A process for the preparation of toner by, for example, mixing a colorant, a latex, and a coagulant comprising cationic wax dispersion to provide, for example, a toner composition of high gloss images. ...
05/23/2006
7041425Toner processes
A process including blending a latex emulsion of resin, water, and an ionic surfactant, a colorant dispersion comprised of a colorant, water, and an ionic surfactant; and a wax dispersion comprised of wax, water and an ionic surfactant, heating the resulting mixture...
05/09/2006
7037633Toner processes
A process involving heating a mixture of a colorant dispersion, a latex emulsion, and an optional wax dispersion in the presence of a coagulant containing a metal ion, a base, and an organic sequestering agent, and wherein said heating involves a first heating and a...
05/02/2006
6984480Toner processes
A process comprising heating a mixture of colorant and latex in the presence of a coagulant and a silicate salt, and wherein said heating comprises a first heating equal to or below about the glass transition temperature of a polymer contained in said latex, and a s...
01/10/2006
6942954Toner processes
A toner process involving the heating a mixture of an acicular magnetite dispersion, a colorant dispersion, a wax dispersion, a first latex containing a crosslinked resin, and a second latex containing a resin free of crosslinking in the presence of a coagulant to p...
09/13/2005
6899987Toner processes
A process for the preparation of toner by, for example, mixing a latex with a colorant mixture comprised of colorant, an ionic surfactant, and a polytetrafluoroethylene; adding a coagulant; heating the resulting mixture below about the glass transition temperature (...
05/31/2005
6767684Toner processes
A toner process involving mixing a colorant dispersion comprising an acicular magnetite dispersion and a colorant dispersion with a latex, a wax dispersion, a crosslinked resin, and a coagulant. ...
07/27/2004
6673505Toner coagulant processes
A process for the preparation of a toner by mixing a colorant, a latex, optionally a wax and a polyamine salt coagulant to form toner size aggregates, wherein the polyamine salt is then neutralized or converted to an amide or hydrolyzed to an acid by the ...
01/06/2004
6673500Document security processes
A process comprising applying a toner security mark on a document generated by xerographic means, and which mark possesses white glossy characteristics, and wherein said toner is comprised of a waterborne polymer resin and a colorant, and optionally a sec...
01/06/2004
6664017Document security processes
A process comprising applying a toner security mark on a document generated by xerographic means and which mark possesses white glossy characteristics, and wherein said toner is comprised of a polymer and a colorant....
12/16/2003
6656658Magnetite toner processes
A toner process comprising heating an acidified dispersion of an acicular magnetite, a carbon black colorant dispersion, an optional wax dispersion, and an acicular latex....
12/02/2003
6656657Toner processes
A toner process comprising mixing an acidified dispersion of an acicular magnetite with an anionic latex, an anionic carbon black dispersion, and an anionic wax dispersion....
12/02/2003
6627373Toner processes
An emulsion aggregation process for the preparation of a magnetite toner, and where the magnetite can function as a negatively charged coagulant to facilitate aggregation of a basic cationic latex, a cationic carbon black dispersion and a cationic wax dis...
09/30/2003
6617092Toner processes
An emulsion aggregation process for the preparation of a magnetite toner, and where the magnetite can function as a coagulant....
09/09/2003
6582873Toner coagulant processes
A toner process including, for example, mixing a latex with a colorant wherein the latex contains resin and an ionic surfactant, and the colorant contains a surfactant and a colorant; adding a polyaluminum chloride; affecting aggregation by heating; addin...
06/24/2003
6576389Toner coagulant processes
A process for the preparation of toner by, for example, mixing a colorant, a latex, a wax and a dual coagulant mixture comprising water solubilized silica with an alumina coating referred to as aluminized silica and a polyaluminum chloride to provide, for...
06/10/2003
6562541Toner processes
A process for the preparation of toner by, for example, mixing a latex with a colorant mixture comprised of colorant, an ionic surfactant, and a polytetrafluoroethylene; adding a coagulant; heating the resulting mixture below about the glass transition te...
05/13/2003
6541175Toner processes
A process involving, for example, providing or generating an emulsion latex comprised of sodio sulfonated polyester resin particles by adding with shearing to the latex a colorant dispersion comprising from about 20 to about 50 percent of a predispersed c...
04/01/2003
6500597Toner coagulant processes
A process for the preparation of chemical toner by mixing a colorant, a latex, optionally a wax, and a first coagulant of, for example, a polyaluminum sulfosilicate and a second cationic coagulant of, for example, a benzylalkonium chloride....
12/31/2002
6416920Toner coagulant processes
A process for the preparation of toner by, for example, mixing a colorant, a latex, optionally a wax and a water solubilized silica with an alumina coating or an aluminized silica as a coagulant....
07/09/2002
6352810Toner coagulant processes
A process for the preparation of toner comprising mixing a colorant, a latex, and a polyamine followed by aggregation and coalescence, and wherein said process is accomplished in the presence of an oxidizing agent....
03/05/2002
6268102Toner coagulant processes
A process for the preparation of toner comprising mixing a colorant, a latex, optionally a wax and a polyaluminum sulfosilicate....
07/31/2001
6210853Toner aggregation processes
A process for the preparation of toner including (i) gerating by emulsion polymerization in the presence of an initiator a first resin latex emulsion; (ii) generating by polycondensation a second resin latex optionally in the presence of a catalyst; (iib)...
04/03/2001
6190820Toner processes
A process for the preparation of toner by, for example (i) generating by emulsion polymerization in the presence of an initiator a first resin latex emulsion; (ii) generating in the presence of an oil soluble initiator by solution polymerization a second resin...
02/20/2001
6132924Toner coagulant processes
A process for the preparation of toner comprising mixing a colorant, a latex, and two coagulants, followed by aggregation and coalescence....
10/17/2000
6130021Toner processes
A process involving the mixing of a latex emulsion containing resin and a surfactant with a colorant dispersion containing a nonionic surfactant, and a polymeric additive and adjusting the resulting mixture pH to less than about 4 by the addition of an ac...
10/10/2000
6120967Sequenced addition of coagulant in toner aggregation process
A process for the preparation of a toner composition includes (i) forming a resin latex dispersion of a resin in an aqueous ionic surfactant solution from a latex utilizing an ionic surfactant and optionally a nonionic surfactant; (ii) preparing a pigment...
09/19/2000
5994020Wax containing colorants
A toner process which comprises mixing (i) a colorant dispersion, and a (ii) a nonionic surfactant, an ionic surfactant or mixtures thereof, with (iii) a latex comprised of resin and a mixture of anionic surfactant and a nonionic surfactant; (iv) heating the result...
11/30/1999
5981651Ink processes
A process comprising (1) polymerizing an organic phase of monomer in the presence of a carboxylic acid, an oil soluble chain transfer agent, and a partially water soluble chain transfer agent; and which polymerizing is accomplished in the presence of (2) ...
11/09/1999
5977210Modified emulsion aggregation processes
A process for the preparation of ink compositions comprising the emulsion polymerization of monomer, water, surfactant, and initiator with stirring and heating to provide a latex; mixing therewith a pigment dispersion of pigment particles, water, and cati...
11/02/1999
5936008Ink jet inks containing toner particles as colorants
An ink for ink jet printing includes a liquid vehicle comprising water and toner particles with a colorant dispersed in or associated with the toner particles. The ink composition combines the print quality advantages of xerographic printing with the econ...
08/10/1999
5863698Toner processes
A process for the preparation of toner comprising mixing a colorant containing a surfactant and a latex emulsion, and wherein the latex emulsion contains resin and a nonionic hydrolyzable surfactant, and wherein said surfactant is of the Formulas (I) or (...
01/26/1999
5766818Toner processes with hydrolyzable surfactant
A process for the preparation of toner by mixing a colorant dispersion and a latex emulsion, and wherein the latex emulsion contains resin and a surfactant, wherein the surfactant is, for example, of the Formulas (I) or (II) ##STR1## wherein R
06/16/1998
5744520Aggregation processes
A process for the preparation of polymer compositions which comprises mixing a conductive component with an anionic polymeric latex containing a polymer; adding a cationic surfactant, or flocculant whereby the aggregation of the latex particles and the co...
04/28/1998
5683847Toner aggregation latex processes
A process comprising: (i) preparing a pigment dispersion, which dispersion is comprised of a pigment, a cationic surfactant, and optionally a charge control agent; (ii) shearing said pigment dispersion with a latex comprised of water, resin, a counterionic or ...
11/04/1997
5679724Submicron particles for ink jet inks
An ink for ink jet printing includes an emulsifiable polymer resin and a pigment, and may be made by: (a) combining (1) an emulsion of an emulsifiable polymer resin in an anionic medium with (2) a pigment and a cationic surfactant; and (b) aggregating par...
10/21/1997
5650252Toner grafting processes
A process for the preparation of toner comprising: (i) preparing a pigment dispersion, which dispersion is comprised of a pigment, an ionic surfactant, and optionally a charge control agent; (ii) shearing said pigment dispersion with a latex or emulsion blend ...
07/22/1997
5604076Toner compositions and processes thereof
A process for the preparation of toner compositions comprising: (i) preparing a latex or emulsion resin comprised of a polyester core encapsulated within a styrene based resin shell by heating said polyester emulsion containing an anionic surfactant with a mix...
02/18/1997
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