Joseph G Schram

Author:

Joseph M. Schram

ISBN #:

0684871378

Author:

Joseph F. Schram

ISBN #:

0376013222

Author:

Joseph F. Schram

ISBN #:

0824961021

Author:

Joseph F. Schram

ISBN #:

0824961102

Author:

Joseph F. Schram

ISBN #:

0824961137

Author:

Joseph F. Schram

ISBN #:

0824961196

Author:

Joseph F. Schram

ISBN #:

0915799073

Author:

Joseph F. Schram

ISBN #:

0915799081

US Patent:

50638750, Nov 12, 1991

Filed:

Mar 19, 1990

Appl. No.:

7/495178

Inventors:

Jeffrey J. Folkins - Rochester NY
Joseph G. Schram - Liverpool NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 1506

US Classification:

118651

Abstract:

An apparatus which develops an electrostatic latent image. A transport roll advances developer material from a chamber to a donor roll. The donor roll advances the toner particles to the latent image. The latent image attracts toner particles from the donor roll. In order to improve the speed with which toner particles removed from the donor roll are replaced, an alternating voltage is applied between the two rolls. The magnetic transport roll is driven to rotate at a surface velocity at least 2, but not more than 5 times that of the rotational surface velocity of the donor roll. Also, the compression pile height (CPH) vs the spacing between the spacing between the donor roll and the transport roller (DRS) is found to be optimal when meeting the ratio CPH:DRS=2:3.

US Patent:

54203759, May 30, 1995

Filed:

May 17, 1994

Appl. No.:

8/245108

Inventors:

Jeffrey J. Folkins - Rochester NY
Thomas J. Behe - Webster NY
Joseph G. Schram - Liverpool NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 1506

US Classification:

118652

Abstract:

A method and apparatus involving the stopping and starting of the development of images, using hybrid development, to insure proper charging of the donor toner layer. A second (e. g. magnetic brush) roll is used to place toner on the donor roll or remove toner from the donor roll depending upon whether the development of images is stopped or started.

US Patent:

51536471, Oct 6, 1992

Filed:

Jun 27, 1991

Appl. No.:

7/722427

Inventors:

Laurence S. Barker - Fairport NY
Thomas J. Behe - Webster NY
Daniel M. Bray - Rochester NY
James R. Davidson - Rochester NY
Jeffrey J. Folkins - Rochester NY
Gerald M. Kryk - Webster NY
Joseph G. Schram - Liverpool NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 1506

US Classification:

355245

Abstract:

An apparatus which develops an electrostatic latent image recorded on a photoconductive member with toner particles. A donor member is spaced from the photoconductive member and transports toner particles to a development zone adjacent the photoconductive member. Electrode wires are positioned in the development zone between the photoconductive member and the donor member. The electrode wires are electrically biased to detach toner particles from the donor member to form a cloud of toner particles in the development zone. Toner particles detached from the toner particle cloud develop the latent image. The electrode wires are adjustably supported in tension adjacent the donor member.

US Patent:

55723020, Nov 5, 1996

Filed:

Dec 6, 1995

Appl. No.:

8/568105

Inventors:

Thomas J. Behe - Webster NY
Daniel M. Bray - Rochester NY
Jeffrey J. Folkins - Rochester NY
Steven C. Hart - Webster NY
Joseph G. Schram - Liverpool NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 1508

US Classification:

399235

Abstract:

An apparatus for supporting wires in a wire module for use in a scavengeless development system using wire maintaining members that longitudinally support the wires. The tops of the wire maintaining members have grooves that positively position the wires and set a desired wire to wire spacing. The wire maintaining members are integral with the wire module and are part of a wire tensioning system. The wire maintaining members are part of an assembly that allow the wires to be pretensioned to the operable development tension prior to the wire module being mounted to the developer housing. The wire maintaining members also have a unique mounting system which allows the wire module to be rotatably mounted to the developer housing.

US Patent:

48750816, Oct 17, 1989

Filed:

Oct 24, 1988

Appl. No.:

7/261869

Inventors:

William L. Goffe - Webster NY
Joseph G. Schram - Liverpool NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 1508
G03G 1500

US Classification:

355303

Abstract:

In a cleaning arrangement for the removal of residual toner from a charge retentive surface, such as a photoreceptor surface in a reproduction machine, after a transfer step, a conductive cleaning member is arranged closely adjacent the surface. An A. C. voltage is applied to the member. In such an arrangement, toner in the vicinity of the blade is observed to jump from the surface in response to the electric field created at the member, forming an oscillating toner cloud. The agitated toner further aids in removal of toner from the surface by causing a large number of toner/toner impacts that jar toner held on the surface into movement. Toner held on the surface is thus removed electrostatically and mechanically. Toner in the cloud configuration may be easily removed from the area adjacent the surface by an airstream through the area, a biased collecting surface, or a traveling electrostatic wave arrangement, among other methods.

US Patent:

44962347, Jan 29, 1985

Filed:

May 2, 1983

Appl. No.:

6/490616

Inventors:

Joseph G. Schram - Liverpool NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 1520

US Classification:

355 3FU

Abstract:

A release agent management (RAM) system for use with a heat and pressure fuser. The system is characterized by the use of a simple reciprocating, positive displacement pump for delivering silicone oil to the heated roll of the fuser. The pump is actuated in response to the fuser rolls being engaged and disengaged, such movement being adapted to act against one or the other of a pair of springs which in cooperation with the oil being pumped forms a damper system which is utilized to control the quantity of oil delivered. The springs and oil cause the velocity of the pump's piston to decay with time which results in more oil being pumped initially.

US Patent:

RE356980, Dec 23, 1997

Filed:

Sep 14, 1995

Appl. No.:

8/527987

Inventors:

Thomas J. Behe - Webster NY
Jeffrey J. Folkins - Rochester NY
Gerald T. Lioy - Rochester NY
Grace T. Brewington - Fairport NY
Joseph G. Schram - Liverpool NY
William H. Wayman - Ontario NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 1506

US Classification:

399286

Abstract:

A donor roll for the conveyance of toner in a development system for an electrophotographic printer includes an outer surface of phenolic resin. The resin is doped to a suitable conductivity to facilitate a discharge time constant thereon of less than 300 microseconds. The donor roll is used in conjunction with an electrode structure as used in scavengeless development.

US Patent:

52453928, Sep 14, 1993

Filed:

Oct 2, 1992

Appl. No.:

7/955965

Inventors:

Thomas J. Behe - Webster NY
Jeffrey J. Folkins - Rochester NY
Gerald T. Lioy - Webster NY
Grace T. Brewington - Fairport NY
Joseph G. Schram - Liverpool NY
William H. Wayman - Ontario NY

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 1506

US Classification:

355259

Abstract:

A donor roll for the conveyance of toner in a development system for an electrophotographic printer includes an outer surface of phenolic resin. The resin is doped to a suitable conductivity to facilitate a discharge time constant thereon of less than 300 microseconds. The donor roll is used in conjunction with an electrode structure as used in scavengeless development.