John A Bergfjord

US Patent:

20030067097, Apr 10, 2003

Filed:

Oct 9, 2001

Appl. No.:

09/973351

Inventors:

Robert Yu - Webster NY, US
John Bergfjord - Macedon NY, US

Assignee:

Xerox Corporation

International Classification:

B29B017/00
B29C071/00
G03G005/00

US Classification:

264/345000, 430/130000

Abstract:

A method of treating a flexible multi-layer member exhibiting a glass transition temperature and including a surface layer, the method composed of: moving the member through a member path including: a contact zone defined by contact of the member with an arcuate surface including a curved contact zone region; a pre-contact member path before the contact zone; and a post-contact member path after the contact zone; heating sequentially each portion of the surface layer such that each of the heated surface layer portions has a temperature above the glass transition temperature while in the curved contact zone region; and cooling sequentially each of the heated surface layer portions while in the contact zone such that the temperature of each of the heated surface layer portions falls to below the glass transition temperature prior to each of the heated surface layer portions exiting the curved contact zone region, thereby defining a cooling region, wherein the heating is accomplished in a heating region encompassing any part or all of the contact zone outside the cooling region and a portion of the pre-contact member path adjacent the contact zone.

US Patent:

20030152855, Aug 14, 2003

Filed:

Jan 25, 2002

Appl. No.:

10/055639

Inventors:

Stephan Drappel - Toronto, CA
Kathleen Carmichael - Williamson NY, US
David Maty - Ontario NY, US
John Bergfjord - Macedon NY, US

Assignee:

Xerox Corporation

International Classification:

G03G005/14

US Classification:

430/060000, 430/131000

Abstract:

An imaging member including at least a support, a charge blocking layer, a charge imaging layer, and an interfacial adhesive layer including at least a copolyester-polycarbonate resin. A process for fabricating the imaging member is also disclosed.

US Patent:

20040115543, Jun 17, 2004

Filed:

Dec 16, 2002

Appl. No.:

10/320827

Inventors:

David Maty - Ontario NY, US
John Bergfjord - Macedon NY, US
Stephan Drappel - Toronto, CA

Assignee:

Xerox Corporation

International Classification:

G03G005/00

US Classification:

430/056000, 430/066000

Abstract:

A flexible electrophotographic imaging member comprising a supporting substrate, at least one imaging layer on one side of the supporting substrate, a charge blocking layer, an optional adhesive layer, a charge-generating layer, a charge transporting layer, a seam overcoat layer comprising a coating solution of a co-polyester resin and having a thickness of from about 2 to about 4 micrometers and having a width of from about 2 to about 10 millimeters and wherein said co-polyester resin is present in an amount of from about 2 to about 40 percent by weight based on the total weight of said overcoat layer, and a binder. The imaging member exhibits an excellent life cycle; excellent wear resistance, excellent electrical performance, and outstanding print quality.

US Patent:

20040173943, Sep 9, 2004

Filed:

Mar 7, 2003

Appl. No.:

10/385409

Inventors:

Robert Yu - Webster NY, US
Satchidanand Mishra - Webster NY, US
Anthony Horgan - Pittsford NY, US
Richard Post - Penfield NY, US
Edward Grabowski - Webster NY, US
John Bergfjord - Macedon NY, US
Miguel Boscan - Macedon NY, US
John Darcy - Webster NY, US
Michael Roetker - Webster NY, US
Scott Griffin - Fairport NY, US

Assignee:

Xerox Corporation

International Classification:

B29C053/00

US Classification:

264/493000, 264/285000

Abstract:

Multilayered web stock is directed toward a curved surface and at least one layer of the web stock is heated to a temperature above a glass transition temperature of the at least one layer of the web stock. The heating can occur just before or upon engaging the curved surface. The temperature of the at least one layer remains above the glass transition temperature while engaging the curved surface, allowing reshaping and/or realignment of the at least one layer relative to other layers of the web stock according to conformance to the curved surface. The web stock is cooled before it disengages from the curved surface. The heating can be done with a high power infrared lamp focused into a line across the web stock, and the cooling can be done with a cooled fluid jet. Additionally, a preheater can be employed, and a supplemental cooler can be used.

US Patent:

20060014089, Jan 19, 2006

Filed:

Jul 13, 2004

Appl. No.:

10/889054

Inventors:

Yuhua Tong - Webster NY, US
Markus Silvestri - Fairport NY, US
Michael Zak - Canandaigue NY, US
John Yanus - Webster NY, US
Min-Hong Fu - Webster NY, US
David Skinner - Rochester NY, US
Kathleen Carmichael - Williamson NY, US
Colleen Helbig - Penfield NY, US
Dale Renfer - Webster NY, US
John Bergfjord - Macedon NY, US
Susan Van Dusen - Williamson NY, US

Assignee:

XEROX CORPORATION - Stamford CT

International Classification:

G03G 5/047

US Classification:

430058800, 430058650, 430970000, 430059600, 430073000

Abstract:

A charge transport layer composition for a photoreceptor includes at least a binder and a charge transport material of about 100% to about 40% by weight of a total of the charge transport layer N,N-dimethylphenyl)-4-biphenylamine and about 0% to about 60% N,N′-bis(3-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine, and wherein the total charge transport material in the composition is 48% or less of the total solids of the composition. The charge transport layer forms a layer of a photoreceptor, which also includes an optional anti-curl layer, a substrate, an optional hole blocking layer, an optional adhesive layer, a charge generating layer, and optionally one or more overcoat or protective layers.

US Patent:

20060063080, Mar 23, 2006

Filed:

Sep 21, 2004

Appl. No.:

10/944914

Inventors:

Yuhua Tong - Webster NY, US
Markus Silvestri - Fairport NY, US
Michael Zak - Canandaigue NY, US
John Yanus - Webster NY, US
Min-Hong Fu - Webster NY, US
David Skinner - Rochester NY, US
Kathleen Carmichael - Williamson NY, US
Colleen Helbig - Penfield NY, US
Dale Renfer - Webster NY, US
John Bergfjord - Macedon NY, US
Susan Van Dusen - Williamson NY, US
Anthony Horgan - Pittsford NY, US
Jin Wu - Webster NY, US
Steven Sterling - Walworth NY, US

Assignee:

XEROX CORPORATION - Stamford CT

International Classification:

G03G 5/06

US Classification:

430072000, 430073000, 430079000, 430970000, 399159000, 430058650, 430096000

Abstract:

A charge transport layer composition for a photoreceptor includes at least a binder, at least one arylamine charge transport material, e.g., N,N′-diphenyl-N,N′-bis(3-methylphenyl)-(2,2′-biphenyl)-4,4′-diamine, and at least one polymer containing carboxylic acid groups or groups capable of forming carboxylic acid groups. The charge transport layer forms a layer of photoreceptor, which also includes an optional anti-curl layer, a substrate, an optional hole blocking layer, an optional adhesive layer, a charge generating layer, and optionally one or more overcoat or protective layers.

US Patent:

20060110669, May 25, 2006

Filed:

Nov 23, 2004

Appl. No.:

10/996089

Inventors:

David Maty - Ontario NY, US
John Bergfjord - Macedon NY, US
Kathleen Carmichael - Williamson NY, US

International Classification:

G03G 5/047
G03G 5/06

US Classification:

430059600, 430133000, 430058800

Abstract:

An electrophotographic imaging member is disclosed which is provided with a charge transport layer comprising at least one polycarbonate polymer binder having a weight average molecular weight based on polystyrene units of from about 150,000 to about 190,000 and at least one polycarbonate binder having a weight average molecular weight based on polystyrene units of from about 230,000 to about 300,000 and a hole transport material.

US Patent:

20060257770, Nov 16, 2006

Filed:

May 10, 2005

Appl. No.:

11/125484

Inventors:

Kent Evans - Lima NY, US
David Skinner - Rochester NY, US
Min-Hong Fu - Webster NY, US
Kathleen Carmichael - Williamson NY, US
June Schneider - Honeoye Falls NY, US
John Bergfjord - Macedon NY, US
Susan VanDusen - Williamson NY, US

International Classification:

G03G 5/047

US Classification:

430059400, 430056000, 430096000, 430059100, 430058650

Abstract:

Dispersions for producing photogenerator layers of photoreceptors are provided. The dispersions include a resin, a photogenerating component, and an adhesive.