Christopher T Knapp

US Patent:

6335136, Jan 1, 2002

Filed:

Feb 6, 2001

Appl. No.:

09/777967

Inventors:

David H. Pan - Rochester NY
Christopher M. Knapp - Fairport NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 9135

US Classification:

4301088, 399251

Abstract:

A liquid developer containing a liquid, colorant, and a wax charge acceptance additive. When free of colorant, the developer is considered colorless or slightly colored.

US Patent:

6346357, Feb 12, 2002

Filed:

Feb 6, 2001

Appl. No.:

09/777598

Inventors:

David H. Pan - Rochester NY
Weizhong Zhao - Webster NY
Christopher M. Knapp - Fairport NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 9135

US Classification:

430115

Abstract:

A liquid developer comprised of a nonpolar liquid, thermoplastic resin, optional colorant, and an alumina charge acceptance additive.

US Patent:

6348292, Feb 19, 2002

Filed:

Feb 6, 2001

Appl. No.:

09/777605

Inventors:

David H. Pan - Rochester NY
Christopher M. Knapp - Fairport NY
Weizhong Zhao - Webster NY
Thomas W. Smith - Penfield NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 9135

US Classification:

430115, 399251

Abstract:

A liquid developer comprised of a nonpolar liquid, resin, optional colorant, and an alkaline earth charge acceptance additive.

US Patent:

6372402, Apr 16, 2002

Filed:

Feb 6, 2001

Appl. No.:

09/777469

Inventors:

David H. Pan - Rochester NY
Christopher M. Knapp - Fairport NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 9135

US Classification:

430115, 430114

Abstract:

A liquid developer contains, for example, a nonpolar liquid, thermoplastic resin, optional colorant, and an inorganic filler.

US Patent:

20020136977, Sep 26, 2002

Filed:

Feb 6, 2001

Appl. No.:

09/777423

Inventors:

David Pan - Rochester NY, US
Christopher Knapp - Fairport NY, US
Weizhong Zhao - Webster NY, US

Assignee:

Xerox Corporation

International Classification:

G03G009/135

US Classification:

430/115000

Abstract:

A liquid developer comprised of a nonpolar liquid, thermoplastic resin, colorant, and a silica charge acceptance additive.

US Patent:

61803081, Jan 30, 2001

Filed:

Jan 27, 2000

Appl. No.:

9/492707

Inventors:

David H. Pan - Rochester NY
Weizhong Zhao - Webster NY
John W. Spiewak - Webster NY
Christopher M. Knapp - Fairport NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 9135

US Classification:

430115

Abstract:

A liquid developer comprised of a nonpolar liquid, resin, colorant, and a charge acceptance component comprised of an aluminum complex of the formulas, or mixtures thereof ##STR1## wherein R. sub. 1 is selected from the group consisting of hydrogen and alkyl, and n represents the number of R. sub. 1 substituents.

US Patent:

62180665, Apr 17, 2001

Filed:

Jan 27, 2000

Appl. No.:

9/492706

Inventors:

Weizhong Zhao - Webster NY
David H. Pan - Rochester NY
John W. Spiewak - Webster NY
Christopher M. Knapp - Fairport NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 9135

US Classification:

430115

Abstract:

A liquid developer comprised of a nonpolar liquid, resin, colorant, and a cyclodextrin charge acceptance component.

US Patent:

62123475, Apr 3, 2001

Filed:

Jan 27, 2000

Appl. No.:

9/492429

Inventors:

Weizhong Zhao - Webster NY
David H. Pan - Rochester NY
John W. Spiewak - Webster NY
Christopher M. Knapp - Fairport NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 1510
G03G 1516

US Classification:

399237

Abstract:

An imaging apparatus containing an imaging member with an electrostatic latent image formed thereon, the imaging member containing a surface capable of supporting marking material; an imaging device for generating the electrostatic latent image on the imaging member wherein the electrostatic latent image includes image areas defined by a first charge voltage and nonimage areas defined by a second charge voltage distinguishable from the first charge voltage; a marking material supply apparatus for depositing marking material on the surface of the imaging member to form a marking material layer thereon adjacent the electrostatic latent image on the imaging member; a charging source for selectively delivering charges to the marking material layer in an imagewise manner responsive to the electrostatic latent image on the imaging member to form a secondary latent image in the marking material layer containing image and nonimage areas corresponding to the electrostatic latent image on the imaging member; and a separator member for selectively separating portions of the marking material layer in accordance with the secondary latent image in the marking material layer to create a developed image corresponding to the electrostatic latent image formed on the imaging member, and wherein the marking material is comprised of developer containing an optional liquid, resin, colorant, and a charge acceptance additive of an aluminum complex of the formulas, or mixtures thereof ##STR1## wherein R. sub. 1 is selected from the group consisting of hydrogen and alkyl, and n represents the number of R. sub. 1 groups, and wherein the charge acceptance additive captures and retains negative ions or positive ions.