William J. Royer

US Patent 7088941 Image forming apparatus having a transfer-exposure device, and image forming method thereof

US Patent 7103292 Heat indicating system

US Patent 7106989 Method and apparatus for controlling high-voltage output in image forming system

US Patent 7110685 Transfer power supply apparatus of an image forming machine

US Patent 7110702 Developing apparatus including a plurality of two-chamber developer containers wherein a ceiling height of the second chamber is higher near a discharge opening

US Patent 7113712 Image forming apparatus

US Patent 7113716 Wrinkle prevented thermal fixing device and image forming apparatus

US Patent 7113731 Toner supplying container with shutter position/detection portion sensor feature and image forming apparatus including the same

US Patent 7116929 Developer supply container including plate-like member which can be easily and solidly fixed to interior of the container

US Patent 7123858 Two-station type color image forming apparatus with separately replaceable components

US Patent 7123871 Neutralizing apparatus and image forming apparatus having the neutralizing apparatus

US Patent 7130555 Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensor

US Patent 7133628 Image forming apparatus using an image carrier and rotary developer unit

US Patent 11175602 Electroconductive member, process cartridge, and electrophotographic image forming apparatus

US Patent 11175609 Belt rotating device with cleaning device and image forming apparatus

US Patent 11175615 Image forming apparatus, image forming method, and computer readable storage medium storing program capable of setting a target temperature for a page for which image information is not acquired

US Patent 7139494 Image forming apparatus, part detachable device and image forming apparatus main body that switches operation mode based part used

US Patent 7149445 Detection of background toner particles

US Patent 7149452 Discharge method for electrophotographic process unit detachable from imaging apparatus and image forming apparatus thereof

US Patent 7151904 Conductive member and process cartridge and image forming apparatus using the same

US Patent 7155142 Tension control for a belt fuser/finisher

US Patent 7158743 Developing apparatus, configured to prevent splashing of toner and carrier

US Patent 7162177 Back of the belt cleaner in an imaging system

US Patent 7162179 Image forming apparatus

US Patent 7162181 Remanufacturing method for process cartridge

US Patent 7162191 Buffed toner metering blade for use with an imaging apparatus

US Patent 7171136 Power supply for hybrid scavengeless development type image forming system

US Patent 7174117 Image forming device and detachably loaded process unit

US Patent 7177551 Apparatus for managing consumables of image forming apparatus

US Patent 7177562 Transfer power supply apparatus of an image forming machine

US Patent 7177571 Image forming apparatus using a belt-like intermediate transfer member

US Patent 7184674 Detecting device for an image forming apparatus

US Patent 7184699 Cleaning blade for image formation apparatus

US Patent 7190927 Image forming apparatus with intermediate transfer belt rollers disposed on an imaginary plane through a plurality of toner containers

US Patent 7194221 Image forming apparatus with heat dissipation unit and method of dissipating heat in same

US Patent 7209677 Detachable process unit including a charge elimination mechanism

US Patent 7221884 Image forming apparatus and method of controlling apparatus having control sections for permitting use of different functions

US Patent 7224922 Image fixing apparatus capable of changing surface condition of fixing rotary member and fixing rotary member for use therein

US Patent 7228094 Nano-size powder coatings for donor members

US Patent 7228095 Transfer apparatus, image forming apparatus, and method of correcting moving speed of belt

US Patent 7236716 Image formation device having a fixing apparatus placed on a heat-shielding member

US Patent 7239815 Image forming apparatus that performs different control operation modes with exchange unit mounted therein

US Patent 7245861 Developing device, image forming apparatus and process cartridge including the developing device, and developing method

US Patent 7251437 Image formation apparatus having a body to be charged with specified properties and including the use of a protective material

US Patent 7254353 Image forming apparatus and method of controlling commercial power supply to fusing means

US Patent 7257341 Image forming apparatus with power supply control for fusing control circuit

US Patent 7257343 Image forming apparatus performing post treatment accompanied with perforation

US Patent 7257347 Developer containing device, image forming apparatus, and image forming system with housing sections welded together by vibration welding

US Patent 7257350 Cleaning unit with a light beam path for the passage of a light beam

US Patent 7260337 Image forming apparatus with control of commercial and battery power supplies to fusing device

US Patent 7266315 Image forming apparatus and image stabilization processing method

US Patent 7266326 Process cartridge remanufacturing method

US Patent 7272348 Developing method using a developer with a specified degree of compression and shearing stress

US Patent 7277651 Image forming apparatus and control method with power controlled in accordance with remaining amount of rechargeable battery power

US Patent 7280776 Method and apparatus to control waste toner collection in an image forming apparatus

US Patent 7283781 High load low load cleaning blade assembly

US Patent 7292795 Image forming apparatus with carbon based fixing material

US Patent 7295786 System for managing a digital printer having active and inactive operational modes

US Patent 7295791 Discharge method for electrophotographic process unit detachable from imaging apparatus and image forming apparatus thereof

US Patent 7299000 Image forming apparatus having a recording material transporting path

US Patent 7305193 Image forming apparatus with operation modes

US Patent 7305203 Image forming apparatus including a process cartridge formed with a hole

US Patent 7308223 Method, device and image forming apparatus for developing an image using a two-component developing agent

US Patent 7310485 Temperature control of a fixing roller in an image forming apparatus

US Patent 7310493 Multi-unit glossing subsystem for a printing device

US Patent 7315708 Systems and methods for remanufacturing imaging components

US Patent 7315711 Image forming apparatus, process cartridge and cleaningless system

US Patent 7317883 Color image forming apparatus with at least two stages of image forming units

US Patent 7319831 Waste-sludge discharging unit and image forming apparatus having the same

US Patent 7324778 Fixing device including heating roller and pressure roller

US Patent 7324779 Printing system with primary and secondary fusing devices

US Patent 7330682 Apparatus capable of applying a high fixing-nip pressure which is easily released when a recording sheet is stuck in a fixing mechanism

US Patent 7333755 Developing device having developer supply unit and image forming apparatus

US Patent 7333756 Method and device for the transport of toner material from a reservoir

US Patent 7333760 Fixing device with temperature control

US Patent 7340195 Image forming apparatus having a scattered toner sucking port

US Patent 7340206 Image forming apparatus with a loop belt transferring a recording medium

US Patent 7343105 Image forming apparatus and control method of image forming apparatus with operation based upon down event occurrences

US Patent 7346285 Image forming apparatus, content measurement method, and method of controlling rotation of rotating member in image forming apparatus

US Patent 7346291 Toner sealing elements for developing device and image forming apparatus having the same

US Patent 7366429 Image forming apparatus with a toner image forming device

US Patent 7366432 Fixing device for fixing an image, image forming apparatus including the fixing device, and fixing method

US Patent 7366453 Xerographic developer unit having multiple magnetic brush rolls rotating against the photoreceptor

US Patent 7369791 Image forming device and detachably loaded process unit

US Patent 7373094 Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensor

US Patent 7373097 Printer engine and color image forming device using this printer engine for preventing deviation of transfer positions and overlap deviation

US Patent 7376366 Image-forming device with power supplying unit

US Patent 7379683 Mark detector, drive controller, belt drive unit, and image forming apparatus

US Patent 7389076 Belt transfer device and image forming apparatus having the same

US Patent 7391990 Waste developer collecting container for color image forming apparatus

US Patent 7391995 Developing apparatus for preventing powder scattering

US Patent 7394999 Image forming apparatus and image control method for controlling image density

US Patent 7395010 Image forming apparatus that permits adjustment of a distance between a light source and a photoconductor

US Patent 7398028 Image heating apparatus including a cooling unit adapted to cool a heating member

US Patent 7398031 Image forming apparatus with heat control of image bearing member

US Patent 7406274 Controlling apparatus for developing roller, image forming device having the same, and developer controlling method thereof

US Patent 7406290 Waste toner transporting apparatus and toner cartridge having the same

US Patent 7412183 Image forming apparatus including a billing unit, a method for controlling the image forming apparatus, a control program, and a computer-readable store medium

US Patent 7412187 Apparatus and method for cleaning the transfer roller of image forming apparatus

US Patent 7412195 Image forming apparatus having means to prevent image quality degradation

US Patent 7418215 Developing device with toner and magnetic carrier, and image forming apparatus using the developing device

US Patent 7421238 Used developer cleaning system and image forming apparatus having the same

US Patent 7424247 Image forming apparatus having a separable coupling set

US Patent 7424258 Transfer device and image forming device that include a transfer assisting blade having a slant portion for abutting a recording medium

US Patent 7428397 Circulation system for developing solution for a wet type image forming apparatus

US Patent 7430378 Image forming apparatus setting an image forming condition based on characteristics of a cartridge, cartridge used in the image forming apparatus, and storage medium mounted on the cartridge

US Patent 7430391 Image forming apparatus featuring a cleaning device including a conductive support member provided between a developing member and a charging member

US Patent 7437099 Image forming apparatus having gear mechanism for rotating image bearing member

US Patent 7440714 Method and apparatus for image forming capable of effectively adjusting respective phases of image bearing members

US Patent 7440718 Developing apparatus featuring image defect supression

US Patent 7447467 Image-forming device with holding unit having multiple positions

US Patent 7450866 Image forming apparatus and method for forming images for carrying out development using a light toner and a dark toner having substantially the same hue

US Patent 7450887 Roller device including driving gear integrally including gear unit and bushing unit for an image forming apparatus

US Patent 7454151 Image forming apparatus, fixing unit having a selectively controlled power supply and associated methodology

US Patent 7460797 Belt type fixing device including a contact and a non-contact temperature sensor and a reflection type sheet sensor

US Patent 7463841 Heating device, fuser device, and image forming apparatus including power supply devices for supplying power to a heating unit

US Patent 7463849 Image forming apparatus including static pre-eliminator

US Patent 7466955 Toner delivery mechanism made in simple construction and image forming device

US Patent 7469114 Image forming apparatus and sheet feeding device in which weight exerted on lifting handles is equalized

US Patent 7486905 Developer cartridge including developer filling port cap and recycling method thereof

US Patent 7486919 Transfer apparatus and image forming apparatus

US Patent 7489888 Image-forming apparatus including a cartridge loading section in communication with a cartridge opening

US Patent 7493062 Image-forming device having switchback conveying path

US Patent 7496306 Cleaning method for transfer device of image forming apparatus

US Patent 7496311 Fixing device with a magnetic flux generating section and a control section

US Patent 7499665 Belt device including an annular belt, and an image forming apparatus for detection of rotational angular speed or rotational angular displacement

US Patent 7499667 Endless belt drive controlling apparatus including angular displacement error calculation and associated image forming apparatus

US Patent 7502570 Image forming apparatus capable of detecting and/or locating a fault, image forming system, and method of controlling the image forming apparatus

US Patent 7502575 Image forming apparatus and method of transferring image to intermediate transfer body by controlling the drive of a photosensitive body

US Patent 7505701 Thermostat and non-contact type temperature sensor arrangement in an image forming apparatus

US Patent 7505704 Lubrication-stripe system for a xerographic printer using an electrostatic cleaning brush and spots blade

US Patent 7505719 Composite trim bar for developer system

US Patent 7505727 Fixing roller including a pressing pipe having a cut away portion for an image forming apparatus

US Patent 7509085 Image forming apparatus, fixing apparatus and toner

US Patent 7512361 Process cartridge whose developing roller and drum contact and separate from each other and image forming apparatus using such cartridge

US Patent 11188020 Method of producing blade, blade, image forming apparatus, and image forming method

US Patent 11188021 Cartridge including an image bearing member and developer bearing member that can be easily separated

US Patent 7532830 Environmental controls for operation of an electrostatographic developer unit having multiple magnetic brush rolls

US Patent 7532849 Cleaning device for removing toner from an image bearing member

US Patent 7536117 Image-forming device and developing cartridge with information member for use therein

US Patent 7539437 Image forming apparatus including a toner stain removal device for removing a toner stain adhering to a rear surface of a sheet

US Patent 7539445 Developer supply container and image forming apparatus

US Patent 7542695 Image forming apparatus with cleaning device that does not cause excessive cutting and cleaning method

US Patent 7546065 Sheet feeding apparatus and image forming apparatus with sheet separating unit

US Patent 7546073 Image forming apparatus having an intermediate transfer member wrapped around and driven by a photoconductor drum

US Patent 7551880 Image forming apparatus featuring a cleaning device including a conductive support member provided so as to intersect a line segment connected between rotational centers of a charge member of a first image forming unit and a developing member of a second image forming unit

US Patent 7555234 Scheduling system for placing test patches in a printing apparatus

US Patent 7555241 Image forming device using a single-layer-type electrophotographic photoconductor and image forming method using the same

US Patent 7555242 Image forming apparatus having drive system according to loads

US Patent 7558500 Image forming device having division counters associated with each division and an undefined counter which is not associated with the division

US Patent 7561815 Image forming apparatus that controls development conditions based on paper type

US Patent 7561817 Toner cartridges, development cartridges, and image forming apparatus including such cartridges

US Patent 7565100 Electrophotographic apparatus and intermediate transfer member partitioned by multiple slits

US Patent 7567763 Image forming apparatus and image forming method capable of detecting a resistance value of an intermediate transferring member

US Patent 7567766 Fixing device with temperature control and image forming apparatus

US Patent 7574157 Image formation device with auxiliary roller

US Patent 7577371 Image forming apparatus featuring correlation of toner concentration control and image parameter control

US Patent 7577380 Image forming apparatus including a belt unit

US Patent 7587147 Fixing apparatus and image forming apparatus with temperature control

US Patent 7590375 Image-forming apparatus having movable tensioner and electrode member that reduce toner scatter

US Patent 7599632 Image forming apparatus and method for forming images for carrying out development using a light toner and a dark toner having substantially the same hue

US Patent 7599644 Process cartridge and image forming apparatus that eliminates charge from the surface of a photosensitive member upstream of a sealing member contact portion

US Patent 7603046 Image forming apparatus including toner supply controlling unit

US Patent 7603052 Cleaning device and image forming apparatus

US Patent 7606520 Shutter for a toner cartridge for use with an image forming device

US Patent 7613416 Toner container with grippable recesses and image forming apparatus having such a toner container

US Patent 7613419 Image forming apparatus and image forming method characterized by a particular nip time

US Patent 7616922 Cleaning device for cleaning a surface of an image forming apparatus, image forming apparatus, and process cartridge

US Patent 7623810 Electrophotographic photosensitive member and image forming apparatus provided with the same

US Patent 7627271 Image forming apparatus including drive transmission member including gears and shafts

US Patent 7630662 Image forming apparatus for fixing an image on a recording material and a current detection circuit therefor

US Patent 7639959 Image forming apparatus including movable belt unit and movable detecting member

US Patent 7639974 Color image forming apparatus with pre-secondary transfer charge eliminating section

US Patent 7639975 Image forming apparatus including two development devices and transfer members

US Patent 7647006 Image forming apparatus having endless belt

US Patent 7647013 Image forming apparatus including developer electric field transport apparatus

US Patent 7650089 System for measuring and controlling total color of a mixture of colorants such as toner

US Patent 7650104 Developing apparatus including developer carrying member and developer regulating member with surface roughness parameters

US Patent 7653333 Paddle, developing device and image forming apparatus

US Patent 7657215 Image forming apparatus with a cleaning mechanism to collect toner for a fixing device

US Patent 7664413 Image forming device including a toner pattern forming unit

US Patent 7664439 Image forming apparatus, and carrier, toner and developer used therein for reducing foggy images

US Patent 7668470 Toner supplying method, toner supplying device, developing device, and image forming apparatus with controlled toner supply

US Patent 7668477 Cleaning device, process cartridge, and image forming device

US Patent 7680431 Image reading apparatus and image composite apparatus having a document reader openably and closably attached to an upper part of the apparatus

US Patent 7684715 Image forming apparatus capable of stably maintaining an image density

US Patent 7684733 Electrophotographic photosensitive member rotatably supported in an image forming apparatus

US Patent 7689135 Image forming apparatus with a drive motor that can rotate a rotary developing unit

US Patent 7693472 Image forming apparatus with pressing roller

US Patent 7697872 Developing cartridge including an improved developer regulating member and image forming apparatus having the same

US Patent 7702263 Toner cartridge including feed opening and return opening and image forming device

US Patent 7706703 Changing the charging applied voltage control in an image forming apparatus based on an increase in the cumulative number of times of execution of image forming

US Patent 7706708 Image forming apparatus which reduces the warm-up time of a fixing device, and control method thereof

US Patent 7706729 Developing device with paddle member and image forming apparatus

US Patent 7711286 Leakage prevention member and cleaning device

US Patent 7720413 Image-forming device with holding unit having multiple positions

US Patent 7729633 Printer dynamically monitoring printer environment contamination

US Patent 7734225 Tri-level tandem xerographic architecture using reduced strength toner

US Patent 7734227 Developing device and image-forming apparatus using multiple-component developer

US Patent 7738814 Development apparatus, image-forming apparatus and developing method using reverse polarity particles

US Patent 7742712 Transfer bias voltage controlling apparatus

US Patent 7742715 Charging system, image forming apparatus, information processing device, charging method, and program for managing charge adjustment according to contents of a trouble

US Patent 7747186 Image forming apparatus including a cooling mechanism configured to apply cooling processing to a transfer belt

US Patent 7773890 Toner supplier, toner supply method, image forming apparatus and toner supply system

US Patent 7773908 Image forming apparatus with cleaning device that does not cause excessive cutting and cleaning method

US Patent 7778579 Color image forming apparatus which executes color misregistration correction processing

US Patent 7792459 Image forming device and detachably loaded process unit

US Patent 7796927 Color image forming apparatus capable of suppressing mixture of colors and scattering of toner

US Patent 7796930 Anti-toner-adhesion mechanism and sheet conveying apparatus and method thereof

US Patent 7801453 Adaptive toner gas gauge

US Patent 7809307 Image forming apparatus with cleaner having member in contact with a surface of an image carrier

US Patent 7813664 Power control method and apparatus to control a heating roller

US Patent 7822375 Image forming apparatus that may correct the positional alignment of images

US Patent 7826785 Fixing device having an induction heating control member

US Patent 7831187 Fusing unit having a high thermal efficiency and image forming apparatus including the same

US Patent 7840147 Image forming apparatus and method for controlling image density thereof

US Patent 7848663 Image forming apparatus configured to determine the position of an image carrier

US Patent 7848693 Endless belt type fusing device and image forming apparatus employing the same

US Patent 7853178 Methods and devices for selectively driving developer members within an image forming device

US Patent 7860442 Image fixing device having carbon lamp and reflector

US Patent 7881637 Method and apparatus for controlling multiple color developers using a camming mechanism

US Patent 7890040 Fusing unit and image forming apparatus using the same

US Patent 7890043 Pressure-controlled steam oven for asymptotic temperature control of continuous feed media

US Patent 7894749 Image forming apparatus capable of resetting and decreasing a surface potential of a photosensitive member

US Patent 7899348 Image forming apparatus with developing bias correcting portion that changes a developing density adjustment pattern

US Patent 7912400 Devices and methods for removing toner from a belt within an image forming apparatus

US Patent 7912414 Microwave and electromagnetic printing agent heating device

US Patent 7917064 Charge roll, process cartridge, image forming apparatus, charging method, and cleaning method of charge roll

US Patent 7925183 Image forming device and detachably loaded process unit

US Patent 7929877 Transfer device and image forming apparatus having at least two contacting members applied with corresponding transfer biases

US Patent 7937005 Image forming apparatus for processing an image in accordance with a sheet size of an image transfer sheet

US Patent 7945178 Image forming apparatus including density control and control method thereof

US Patent 7945199 Fixing device including separation part for separating medium from fixing belt

US Patent 7949281 Process cartridge and image forming apparatus for effectively cleaning a charging roller at predetermined intervals

US Patent 7957683 Color image forming apparatus capable of suppressing mixture of colors and scattering of toner

US Patent 7962056 Method and apparatus for speed change detection based on a latent image pattern

US Patent 7962073 Image forming apparatus with developing unit having a magnetic brush

US Patent 7970292 Consumable unit and image forming apparatus including memory storing consumable item information

US Patent 7974558 Toner cartridge locking apparatus, image forming apparatus having the same, toner cartridge, and mounting and dismounting method for a toner cartridge

US Patent 7978998 Image forming apparatus for transferring transfer residual toner onto image bearing member

US Patent 7979009 Developer supplying cartridge including a developer supplying port shutter portion and electrophotographic image forming apparatus using the cartridge

US Patent 7983588 Image forming apparatus with cleaning device that does not cause excessive cutting and cleaning method

US Patent 7983604 Magnetic scavenger for an electrostatographic printer

US Patent 8005391 Methods for determining when to transition between color printing and black-only printing in an image forming device

US Patent 8009996 Image forming apparatus including unit for determining type of developer cartridge