Amy A Grillo

US Patent:

7476480, Jan 13, 2009

Filed:

Jan 9, 2007

Appl. No.:

11/651738

Inventors:

Steven M. Malachowski - East Rochester NY, US
Amy A. Grillo - Rochester NY, US
Eugene F. Young - Rochester NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 9/08

US Classification:

4301081, 4301371, 43013714

Abstract:

Herein is disclosed a process for producing emulsion aggregation toner including (i) adding a base to an emulsion aggregation toner to increase the pH of the toner to from about 7 to about 12; (ii) sieving and filtering the toner; (iii) washing the toner with an enzyme selected from the group consisting of carboxylic ester hydrolase and sulfuric ester hydrolase; (iv) filtering the toner; (v) washing the toner with reverse osmosis or deionized water; and (vi) adding an acid to reduce the pH of the toner to from about 3 to about 8.

US Patent:

7736831, Jun 15, 2010

Filed:

Sep 8, 2006

Appl. No.:

11/530079

Inventors:

Zhen Lai - Webster NY, US
Richard Fong - Webster NY, US
Yuhua Tong - Webster NY, US
Chieh-Min Cheng - Rochester NY, US
Amy A. Grillo - Rochester NY, US
Paul F. Smith - Oakville, CA
Paul J. Gerroir - Oakville, CA
Beng S. Ong - Mississauga, CA

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 9/087

US Classification:

43013714, 4301081

Abstract:

A process for preparing a toner includes mixing a polymeric resin emulsion, a colorant dispersion, and a wax to form a mixture; optionally adding a coagulant to the mixture; heating the mixture at a temperature below a glass transition temperature of the polymeric resin to aggregate the polymeric resin, colorant, and wax, to form aggregated particles; adding a coalescent agent to the aggregated particles; heating the aggregated particles and coalescent agent at a temperature above the glass transition temperature of the polymeric resin, to coalesce the aggregated particles to form toner particles, optionally cooling the mixture, and isolating the tone particles.

US Patent:

7291437, Nov 6, 2007

Filed:

Apr 14, 2003

Appl. No.:

10/413633

Inventors:

Amy A. Grillo - Rochester NY, US
Peter V. Nguyen - Webster NY, US
Donald Riley - Rochester NY, US
Allan K. Chen - Oakville, CA
Emily L. Moore - Mississauga, CA
Tie Hwee Ng - Mississauga, CA
Chieh-Min Cheng - Rochester NY, US

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 9/08
C08J 3/215

US Classification:

43013714, 523335

Abstract:

A toner process comprising mixing a colorant dispersion with a latex, a wax dispersion, and a coagulant, and wherein the polymer latex selected possesses a weight average molecular weight of from about 20,000 to about 55,000, a number average molecular weight of from about 5,000 to about 18,000, an onset glass transition temperature Tg of from about 40 C. to about 80 C. , and a particle size distribution PSD of from about 50 to about 500 nanometers.

US Patent:

20160139520, May 19, 2016

Filed:

Nov 13, 2014

Appl. No.:

14/540284

Inventors:

- Norwalk CT, US
Peter V. Nguyen - Webster NY, US
Judith M. Vandewinckel - Livonia NY, US
Amy A. Grillo - Rochester NY, US
Chieh-Min Cheng - Rochester NY, US

International Classification:

G03G 9/08
B01F 1/00
B01F 3/08

Abstract:

A process for making colored polyester latex by phase inversion emulsification is described.

US Patent:

20160004175, Jan 7, 2016

Filed:

Jul 1, 2014

Appl. No.:

14/321785

Inventors:

- Norwalk CT, US
Christopher M. Wolfe - Rochester NY, US
Randy P Tin - Rochester NY, US
Eric Godshall - Macedon NY, US
Shigang Qiu - Toronto, CA
Peter V Nguyen - Webster NY, US
Jay L Schneider - Canandaigua NY, US
Linda S Schriever - Penfield NY, US
Steven M Malachowski - East Rochester NY, US
Amy A Grillo - Rochester NY, US
Chieh-Min Cheng - Rochester NY, US

International Classification:

G03G 9/08

Abstract:

A process for making a latex emulsion where distillation occurs at an elevated temperature is used to make resin particles with a conditioned surface which can be used to make magenta toner with increased efficiency.

US Patent:

20150168858, Jun 18, 2015

Filed:

Dec 16, 2013

Appl. No.:

14/107930

Inventors:

- Norwalk CT, US
Shigang Qiu - Toronto, CA
Peter V. Nguyen - Webster NY, US
Linda S. Schriever - Penfield NY, US
Amy A. Grillo - Rochester NY, US
Chieh-Min Cheng - Rochester NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 9/08
C08L 67/02

Abstract:

A process for making a latex emulsion suitable for use in a toner composition which applies the model of Brinkman to predict phase inversion point (PIP) during phase invention emulsification (PIE), including using this model to calculate the amount of water needed to complete the phase inversion for solvent reuse formulation.

US Patent:

20140370434, Dec 18, 2014

Filed:

Jun 13, 2013

Appl. No.:

13/917114

Inventors:

- Norwalk CT, US
Amy GRILLO - Rochester NY, US
Chieh-Min CHENG - Rochester NY, US
Tie Hwee NG - Mississauga, CA

International Classification:

G03G 9/087
G03G 9/08
C08L 67/02

US Classification:

4301094, 525437, 4301371

Abstract:

A method for reclaiming an out-of-spec emulsion material includes recovering the out-of-spec emulsion material from a scrap manufacturing batch; distilling the out-of-spec emulsion material to raise a solids content of the out-of-spec emulsion material to about 45 wt % or more based on a total weight of the emulsion material; dissolving the distilled emulsion material in a solvent to form a first mixture; adding a base to the first mixture to neutralize acid groups present in the distilled emulsion material, forming a second mixture; emulsifying the second mixture by adding water to the second mixture; and forming particles having an average particle diameter (D50v) within a target range, wherein the out-of-spec emulsion material has an average particle diameter falling outside of the target range.

US Patent:

20140370438, Dec 18, 2014

Filed:

Jun 17, 2013

Appl. No.:

13/919989

Inventors:

- Norwalk CT, US
Chieh-Min Cheng - Rochester NY, US
Amy Grillo - Rochester NY, US
Yulin Wang - Oakville, CA
Rashid Mahmood - Mississauga, CA
David Kurceba - Hamilton, CA

International Classification:

G03G 9/08
G03G 9/093

US Classification:

43013711, 523339, 43013714

Abstract:

A phase inversion emulsification process includes dissolving a polyester resin in a mixture comprising (1) an organic solvent, (2) a first portion of a total amount of neutralizing agent, and (3) a first portion of water, neutralizing the dissolved polyester resin with a second portion of neutralizing agent, the second portion of neutralizing agent including the remaining amount of the total amount neutralizing agent, forming an emulsion by adding a second portion of water after the neutralizing step, and removing a portion of the organic solvent from the emulsion to provide a latex.