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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Wayman; William H.
Address:
Ontario, NY
No. of patents:
70
Patents:


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Patent Number Title Of Patent Date Issued
RE35698 Donor roll for scavengeless development in a xerographic apparatus December 23, 1997
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
8213837 Unidirectional pump auger shaft seal for developer housings July 3, 2012
This is an auger shaft seal used in an electrophotographic marking system. The seal is made up of alternating raised and depressed pie-shaped sections, each having edges that force developer away from auger bearings. The seal of this invention can be used on bi-directional augers and
8200108 Dynamic donor loading control for development system June 12, 2012
A method and apparatus transfer a material from first roller within a container to at least one second roller, and transfer the material from the second roller to at least one third roller. The second roller and the third roller form a loading nip at a location where the second roller is
8199343 Partial electrical discharge system and method June 12, 2012
Methods and systems are presented for detecting partial electrical discharges in a printing machine and for determining the source of the discharge events by detecting radio frequency signals using an antenna located near high voltage components of the printing system and determining
8189197 Optical sensor for characterizing a substrate May 29, 2012
A substrate characterization device is provided which includes an optical sensor module and a processor. The optical sensor module includes a light emitting source and a light receiving detector for communicating with the substrate and providing an indication of the diffusion of light th
8050595 Replenishment carrier injection system November 1, 2011
A replenishment carrier injection system is provided for adding carrier particles to a developer housing in a two-component developer toner imaging machine. The replenishment system includes (i) a carrier-only hopper for receiving and containing a first quantity of carrier particles;
7974557 Carrier replenishment and image mottle reduction system July 5, 2011
A replenishment and image mottle reduction system for adding carrier particles to a developer housing in a two-component developer toner imaging machine. The replenishment system includes (i) a carrier-only hopper for receiving and containing a first quantity of carrier particles; (i
7912386 Systems and methods for determining a charge-to-mass ratio, and a concentration, of one componen March 22, 2011
Systems and methods are provided for using a sensor to determine a charge-to-mass ratio, and a concentration, of a mixture including a first component and a second component. A base resonance frequency of the sensor in an unloaded state is measured. A surface of a vibrating element o
7855565 Substrate characterization device and method for characterizing a substrate December 21, 2010
A substrate characterization device is provided which includes a sensor module and a processor. The sensor module has at least one contact surface configured to contact the substrate, the sensor module configured to measure a variance of capacitance in at least two dimensions of the
7813678 Toner image reproduction machine including a ball valve device having a pressure release assembl October 12, 2010
A ball valve device for filling pressurized hoppers includes (a) a valve housing having a wall defining a chamber, a first port and a second port; (b) a valve ball rotatable within the chamber and including a through-bore for material flow from a refill container through the second p
7811737 Release fluid additives October 12, 2010
The presently disclosed embodiments are directed to release fluids or agents that are useful in release coating in toner-based technologies. More particularly, the embodiments pertain to the addition of metal chelating agents to release fluids to prevent byproduct reactions from the
7805099 Teeter-totter valve for carrier replenishment system September 28, 2010
A teeter-totter valve device for metering magnetic particles from a hopper includes (i) a tube connected to the hopper for flow of magnetic particles out of the hopper; (ii) a teeter-totter member having a first arm including a first distal end, and a second adjustable arm including a
7787812 Transfer Di-chorotron (Dicor) cover with constant paper current density August 31, 2010
A sliding cover of a Di-chorotron includes an electrode connected to an external circuit that simulates the impedance of media on a photoreceptor to maintain constant current density through media on the photoreceptor while blocking transfer current from passing to uncovered portions of
7462661 Release fluid additives December 9, 2008
The presently disclosed embodiments are directed to release fluids or agents that are useful in release coating in toner-based technologies. More particularly, the embodiments pertain to the addition of metal chelating agents to release fluids to prevent byproduct reactions from the
7447449 Cleaner subsystem fault detection November 4, 2008
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
7444104 Variable energy development station using a magnet to restrict developer material flow in the de October 28, 2008
An improved development station extends the useful life of toner in the housing and increases the number of images developed by the developer supply. The improved development station includes a development station housing having a developer sump, a toner supply for providing toner ma
7374855 Photoreceptors May 20, 2008
Methods for texturing the surface of photoreceptors are provided.
7362996 Cleaning and spots blade lubricating method and apparatus April 22, 2008
A cleaning and spots blade lubricating apparatus and method, the apparatus for the method includes (a) a pre-clean charging device including a first bias having a first polarity; (b) a cleaning device having (1) a cleaning mode including a second bias having a second polarity opposite th
7263316 Variable energy development station August 28, 2007
An improved development station extends the useful life of toner in the housing and increases the number of images developed by the developer supply. The improved development station includes a toner supply for providing toner to a developer sump; a mixing auger for uniformly blendin
7257362 Photoreceptor abrader for LCM August 14, 2007
A cleaning system for cleaning an imaging surface moving in a process direction, including: an abrading brush for uniformly abrading the imaging surface to remove laterally conductive deposits that lead to lateral charge migration therefrom, the abrading brush includes a core definin
7224929 AC biased conductive brush for eliminating VOC induced LCM May 29, 2007
A cleaning system including: a cleaning device for cleaning laterally conductive deposits from the imaging surface; an AC bias member, adjacent to the imaging surface and positioned downstream from the cleaning device; and a power supply for biasing the AC bias member to generate cor
7171136 Power supply for hybrid scavengeless development type image forming system January 30, 2007
A power supply for a hybrid scavengeless development (HSD) image forming system which generates three voltages, a mag voltage, a donor voltage and a wire electrode voltage. The power supply outputs square waveforms for generating toner clouds to maximize the voltage push-pull on toner
6980751 Developer humidifier December 27, 2005
An apparatus for developing a latent image recorded on a movable imaging surface, including: a reservoir for storing a supply of developer material including toner particles; a donor member being arranged to receive toner particles from the reservoir and to deliver toner particles to the
6941089 Heating system for a developer housing September 6, 2005
An apparatus for developing a latent image recorded on a movable imaging surface, including: a reservoir for storing a supply of developer material including toner particles, said reservoir including a developer material mixing and transport area; a donor member being arranged to receive
6759125 Development system coatings July 6, 2004
A coated transport roll comprised of a core with a coating comprised of a charge transporting polymer and an oxidizing agent.
6711363 METHOD OF DETERMINING A CHARGING DEVICE PRE-FAULT STATUS, A PRINTING MACHINE ARRANGED WITH THE S March 23, 2004
A printing machine comprises a charging device that forms a variable operating voltage. A charging device pre-fault status condition is determined by sampling the charging device operating voltage, forming a slope value based on a charging device operating voltage rate of change per
6668146 Hybrid scavengeless development using direct current voltage shift to remove wire history December 23, 2003
An image transfer apparatus with the capacity to reduce or clean wire history. The cleaning is performed by supplying a voltage burst to shift, relative to nominal, the D.C. component of the electrode bias relative to the electrical bias of the donor member during the movement of the
6640061 Sensing system for detecting a full condition within a waste developer system October 28, 2003
A sensing system for detecting a full condition within a waste developer system, the sensing system including a developer waste container for receiving and holding waste developer material comprising toner and carrier deposited therein from a developer system; a sensor assembly mount
6580882 Low cost trim-gap-conductivity TC sensor June 17, 2003
A toner maintenance system for an electrophotographic developer unit, including a sump for storing a quantity of developer material comprised of carrier and toner material; a first member for transporting a mixture of developer material and toner particles from the sump, the first member
6548154 Electrical charge relaxable wear resistant coating for bias charging or transfer member April 15, 2003
A bias transfer member or bias charging member for a xerographic device includes a support substrate, and a multi-layer conductive surface coating over the support substrate. The multi-layer coating includes a base layer of metal-containing particles in a polymer binder, an intermediate
6498913 Static charge controlling system and a reproduction machine having same December 24, 2002
A static controlling system is provided for effectively and economically controlling static charge build up on a driven web member moving in contact with support structures. The static controlling system includes (a) at least one resistive contact member for contacting the surface of
6456812 Coating compositions for development electrodes September 24, 2002
An improved apparatus and process for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus by providing a composition coating comprising a water-emulsified polymer, lubricant and inorganic material on
6340528 Crosslinkable polymer compositions for donor roll coatings January 22, 2002
A donor member, useful in ionographic or electrophotographic apparatuses and preferably useful in hybrid scavengeless development units, has a substrate and an oxidized transport coating thereover. The oxidized transport coating includes a polymer binder, charge transporting molecules
6289196 Oxidized transport donor roll coatings September 11, 2001
A donor member useful in ionographic or electrophotographic apparatuses and preferably useful in hybrid scavengeless development units, having a substrate and an oxidized transport coating including charge transport molecules, polymer binder, and an oxidized oligo arylamine salt comprisi
6148157 Hybrid scavengeless development using a failure mode detection system November 14, 2000
An apparatus for developing a latent image recorded on a surface, including a housing defining a chamber storing a supply of developer material comprising toner; a toner donor member spaced from the surface and being adapted to transport toner to a region opposed from the surface; an
6101357 Hybrid scavengeless development using a method for preventing power supply induced banding August 8, 2000
A developer unit for developing a latent image recorded on an image receiving member with marking particles, to form a developed image, including: a donor member spaced from the image receiving member and adapted to transport marking particles to a development zone adjacent the image
6049686 Hybrid scavengeless development using an apparatus and a method for preventing wire contaminatio April 11, 2000
A developer unit for developing a latent image recorded on an image receiving member with marking particles, to form a developed image. A donor member is spaced from the image receiving member and adapted to transport marking particles to a development zone adjacent the image receivi
5995780 Electrostatic filtering system for removing toner from a development housing November 30, 1999
An electrostatic filtering system which allows a steady flow of air into a development housing and prevent toner emission therefrom. The system is used in an apparatus for developing a latent image recorded on a surface includes the housing having a supply of toner therein; a donor membe
5978641 Coaxial integral heating fusing belt November 2, 1999
A rapid warm-up fuser belt (and fusers and marking machines that use such a fuser belt) comprised of a conductive substrate having a resistive heating layer on one side and a release layer on the other side. The fuser belt further enables an electrical contact to the conductive substrate
5966575 Pneumatic spring for SED resistance brush commutator October 12, 1999
An apparatus for developing a latent image recorded on a surface, including; a housing defining a chamber storing at least a supply of toner therein; a donor member spaced from the surface and adapted to transport toner from the chamber of the housing to a development zone adjacent the
5920750 Connection between a compact electrical circuit and a segmented electrode development roll July 6, 1999
A compact design for the electronic circuits to provide electrical contact to a SED roll of a segmented electrode development unit is provided. In this invention, the required high voltage and low voltage circuitry is placed on a printed flexible circuit which is folded and rolled into a
5892303 Compact design for combination of an electrical circuit with a segmented electrode development r April 6, 1999
A compact design for the electronic circuits to provide electrical contact to a SED roll of a segmented electrode development unit is provided. In this invention, all the required high voltage and low voltage circuitry is placed on a printed flexible circuit which is folded and rolled in
5887235 Variable gloss fuser March 23, 1999
Three fuser rollers cooperate with a pressure roller to form an extended fusing zone through which a substrate carrying toner images passes with the toner images contacting a fusing belt. Electrical power is applied to the three fuser rolls in such a manner that the portions of the belt
5864734 Development system producing reduced airborne toner contamination January 26, 1999
An apparatus for powder cloud development of an electrostatic image in which a donor roll advances toner to a development zone adjacent the image, and in which precipitating electric fields are provided at the entrance and exit of the development zone to redeposit undeveloped toner o
5822652 Compact design for combination of an electrical circuit with a segmented electrode development r October 13, 1998
There is disclosed a compact design for the electronic circuits required to provide electrical contact to a SED roll of a segmented electrode development unit. In this invention, all the required high voltage and low voltage circuitry is placed on a printed flexible circuit which is fold
5752143 Liquid immersion development apparatus having efficient charge dissipating development electrode May 12, 1998
In an electrostatographic liquid immersion development (LID) reproduction machine having an image bearing member having an image bearing surface, a development apparatus having a development electrode for forming a development nip with the image bearing surface and for effectively di
5742885 Development system employing acoustic toner fluidization for donor roll April 21, 1998
An apparatus for developing a latent image recorded on a surface including a housing defining a chamber storing a supply of toner. A toner donor member is spaced from the image bearing surface and adapted to transport toner to a region opposed from the surface. A charging device is dispo
5708950 Transfuser January 13, 1998
Printing machines which incorporate a transfusing station having a transfusing member with a resistive heater layer, a substrate, and a release layer. The transfusing station is entrained between at least two electrically conductive contact members, such as rollers, which electricall
5652648 Negative wrap back up roll adjacent the transfer nip July 29, 1997
An apparatus for developing a latent image recorded in a surface of a flexible photoconductive member. The apparatus includes a developer unit having a developer roll and a backing member. The roll is positioned opposed from the surface of the flexible photoconductive member and is u
5483331 Textured contact rollers and the method of using them for improving electrical contact with a fu January 9, 1996
Three fuser rollers cooperate with a pressure roller to form an extended fusing zone through which an electrically resistive substrate carrying toner images passes with the toner images contacting fusing belt. Electrical power is applied to the three fuser rolls in such a manner that
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