Michael Y Lu

US Patent:

7231170, Jun 12, 2007

Filed:

Feb 28, 2005

Appl. No.:

11/068027

Inventors:

Douglas A. Lundy - Webster NY, US
Anthony L. Paolini - Rochester NY, US
D Clay Johnson - Rochester NY, US
Michael Q. Lu - Fairport NY, US

Assignee:

Xerox Corporation - Stamford CT

International Classification:

G03G 21/00

US Classification:

399350, 399351

Abstract:

A surface-treating apparatus has a dual-purpose surface-treating blade assembly that includes a blade holder for holding and loading a blade member, and a one-piece blade member having a first edge mounted to the blade holder and a second edge for contacting and treating a surface. The one-piece blade member has a mid-portion for applying a first edge-loading force to lightly contact and remove random spots from a central imaging region of the surface, a first end portion, and a second end portion. The dual-purpose blade assembly also includes a first shim device and a second shim device assembled respectively to the first end portion and to the second end portion of the blade member for stiffening such end portions and increasing a magnitude of each of a second and a third different edge-loading forces at such end portions relative to the first edge-loading force.

US Patent:

7382996, Jun 3, 2008

Filed:

Dec 19, 2005

Appl. No.:

11/311464

Inventors:

Michael Q. Lu - Fairport NY, US
Douglas A. Lundy - Webster NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 15/00

US Classification:

399 71, 399123, 399343

Abstract:

A method for operating a cleaning device having a preclean charging device for improved cleaning latitude on an imageable surface, including: moving imageable surface in a process direction through a cleaning zone, selecting a portion of the imageable surface moving through the cleaning zone; providing an initial pre-clean current to the selected portion of the imageable surface; and during the moving step, changing, the preclean current to the selected portion of the imageable surface.

US Patent:

7433644, Oct 7, 2008

Filed:

Jan 24, 2006

Appl. No.:

11/338547

Inventors:

Douglas Lundy - Webster NY, US
D. Clay Johnson - Rochester NY, US
Bruce J. Parks - Bloomfield NY, US
Michael Lu - Fairport NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 21/00

US Classification:

399349, 399355

Abstract:

A photoconductor belt cleaning system is described. This system can utilize in one embodiment one cleaning brush and a cleaning blade, and in a second embodiment, two cleaning brushes, brush and brush , with a cleaning blade. In the second embodiment, the cleaning blade is located in the system before brush , and adjacent to brush. The brushes are charged in an opposite polarity to the charge of the toner to be removed from the photoconductor belt.

US Patent:

7447449, Nov 4, 2008

Filed:

Jun 20, 2006

Appl. No.:

11/455970

Inventors:

Michael Quoc Lu - Fairport NY, US
William H. Wayman - Ontario NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 21/00
G03G 15/00

US Classification:

399 34, 399 71

Abstract:

A method for detecting a stress condition in a cleaning system of an imaging device is provided. The method comprises receiving a pulse-width modulated (PWM) signal. The PWM signal has a duty cycle for driving a PWM servo motor of a cleaning system. A determination is then made whether the duty cycle of the PWM signal indicates that the servo motor is working within design limits. If the duty cycle is within design limits, characteristic adjustments of the duty cycle of the PWM are detected that indicate an occurrence of a non-catastrophic stress condition in the cleaning system. Once a characteristic adjustment of the duty cycle is detected, an alert signal is generated.

US Patent:

7457578, Nov 25, 2008

Filed:

Nov 20, 2006

Appl. No.:

11/601881

Inventors:

Douglas A. Lundy - Webster NY, US
D Clay Johnson - Rochester NY, US
Bruce J. Parks - Bloomfield NY, US
Michael Quoc Lu - Fairport NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 21/00

US Classification:

399349, 399350, 399353, 399354, 399355

Abstract:

There is disclosed a system for cleaning marking material from a surface portion of a movable photoconductive member. The system includes a first rotatable brush, a blade and a second rotatable brush arranged in sequential order along the movable photoconductive member. The first rotatable brush is for removing a first amount of marking material from the surface portion of the movable photoconductive member as the surface portion of the movable photoconductive member moves past said first rotatable electrostatic brush. The blade, in engaging contact with the movable photoconductive member, is for removing a second amount of marking material from the surface portion of the movable photoconductive member. The second rotatable brush, positioned in interference contact with the movable photoconductive member, is for removing substantially all residual marking material that was not removed by the first rotatable brush and the blade.

US Patent:

7469121, Dec 23, 2008

Filed:

Nov 6, 2006

Appl. No.:

11/556851

Inventors:

Douglas A Lundy - Webster NY, US
Anthony L Paolini - Rochester NY, US
Michael Quoc Lu - Fairport NY, US
Michael J Turan - Walworth NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 21/00

US Classification:

399353

Abstract:

In order to prevent built up crusts on the flicker assembly from being detrimentally dislodged due to the cleaning fibers impacting the flicker bar assembly, there is provided a soft contact portion flicker bar assembly for mounting in a machine to contact and flick the cleaning fibers moving along a fiber path. The soft contact portion flicker bar assembly includes (a) a base portion for mounting to a frame portion of the machine; (b) a body portion including a distal, first end, and an opposite, second end connected to the base portion; and (c) a tip portion connected to the first, distal end for contacting and interfering with cleaning fibers moving along the fiber path. The tip portion is made of a material having a Shore A durometer hardness of less than 85 for reducing a jarring effect of impact forces between such tip portion and the moving cleaning fibers, thereby preventing detrimental dislodging of built up crusts of particles from any part of the flicker bar assembly.

US Patent:

7587163, Sep 8, 2009

Filed:

Mar 21, 2007

Appl. No.:

11/726256

Inventors:

Bruce J. Parks - Bloomfield NY, US
Michael Q. Lu - Penfield NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 21/00

US Classification:

399350

Abstract:

This is a cleaning blade useful in an electrophotographic marking system. Under certain conditions, cleaning blades will tuck when the blade continuously contacts a photoconductive surface of this marking system. This tucking causes abrading and damage to the moving photoconductive surface. To prevent or minimize tucking, a blade stiffener is used in this invention in either an add-on or as a part of the originally-manufactured elastomeric blade.

US Patent:

8023852, Sep 20, 2011

Filed:

Aug 20, 2008

Appl. No.:

12/194868

Inventors:

Robert Arnold Gross - Penfield NY, US
Michael Nicholas Soures - Webster NY, US
Robert Steven Pozniakas - Rochester NY, US
Michael Lu - Penfield NY, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G03G 15/00
G03G 21/00

US Classification:

399 71, 399346, 399349, 399350, 399353

Abstract:

Systems and methods are provided for controlling cleaning devices in image forming apparatus electrostatic image forming apparatus. Such systems may include a charge receptor, movable in a process direction, defining a main surface. A toner application device applies toner to the charge receptor, and is configured to place a lubrication stripe including the toner on a portion of the main surface of the charge receptor at a selected time. An influence of at least one corotron on the charge receptor is modified, during the designated rotations of the charge receptor, while the portion of the surface on which the lubrication stripe is formed, or will be formed, is passing the at least one corotron. The lubrication stripe is delivered to a secondary cleaning device including a blade engaging with the photoreceptor surface to lubricate the blade.