Nexpress Solutions, Inc.

Eastman-kodak Company

Festo Ag & Co. Kg

Buro-und Datentechnik Gmbh & Co., Kg

Festo Se &co. Kg

Andreas Dickhoff

Martin Maichl

James Douglas Shifley

Gregory Leo Kowalski

Hannes Wirtl

Charles Herbert Hasenauer

Helmut Domes

Andreas G Nagy

Reinhard Weltz

Donald Saul Rimai

Thomas Nathaniel Tombs

John W May

Christian Compera

Bernd Philipps

Michael N Freund

Andreas Schweizer

Andrew Peter Kittleson

David J Quesnel

Jakob Brenner

Soenke Schmidt

Wolfgang Heinrich Alberstadt

Michael Bidmon

Martin Meier

Karlheinz Groeninger

A fluid control device including a valve arrangement, the valve arrangement including an air supply valve, and an air outlet valve, and a control means, wherein the control means is electrically connected to the air supply valve and to the air outlet valve, and further includes a sensor input for processing a sensor signal and is connected to a sensor which is configured for determining a functional state of the fluid consumer, wherein the control means is configured for implementing a valve diagnostic process such that a first control signal for the air supply valve and a second control signal for the air outlet valve are each varied between a lower interval limit and an upper interval limit while maintaining a pre-definable sensor signal level of a sensor signal provided by the sensor, and the control means is configured for recording value pairs for the first and second control signals.

Fluid control device and method for operating a fluid control device

A fluid valve for influencing a fluid flow, including a valve housing in which an actuator is accommodated which can be moved between a first and a second functional position, further including a fluid passage which extends through some regions of the valve housing and terminates at a valve seat in the valve housing, and further including a sealing means which is motion-coupled to the actuator and designed for temporarily sealing the valve seat as a function of the functional position of the actuator, wherein a plastically deformable adjustment means is assigned to and designed to act on the actuator in order to allow a position of the sealing means to be adjusted in at least one of the functional positions of the actuator, the adjustment means being designed as a positionable abutment for the actuator or for a coupling element arranged between the actuator and the sealing means for the purpose of motion-coupling.

Fluid valve

A valve device for influencing a fluid supply of fluid-operated loads, includes a valve module with a valve housing in which valve shafts are formed to accommodate valve cartridges, and further includes valve cartridges located in the valve shafts, wherein each of the valve shafts together with the valve cartridges accommodated therein bounds a pressure chamber connected to an assigned inlet port in a fluidically communicating manner, and wherein each of the valve cartridges includes two electrically selectable valve means which are designed to influence a free flow cross-section between the pressure chamber and an outlet port assigned to the respective valve means.

Piezoelectric actuated fluid valve

A valve device including a valve housing which bounds a valve chamber in which a valve member is accommodated for movement between a blocking position and a release position in order to influence a free flow cross-section for a fluid in a flow path between an inlet passage terminating into the valve chamber and an outlet passage leading from the valve chamber, further including a first absolute pressure sensor for providing a first pressure signal as a function of an operating pressure in the flow path, and further including an evaluation circuit for processing the first pressure signal. It is provided that a second absolute pressure sensor is located outside the flow path, which is designed to provide a second pressure signal as a function of an operating pressure outside the flow path and which is connected to the evaluation circuit for enabling a differential pressure between the first and second pressure signals to be determined.

Valve device, valve assembly and method for calibrating a valve assembly

Valve module for influencing a fluid supply of a fluid-operated load, comprising a valve housing with a valve chamber being connected to an inlet port and an outlet port and a pilot chamber being connected to an operating port, comprising a valve member which is movably adjustable between a blocking position and a release position and further comprising an actuator which is motion-coupled to the valve member, wherein a position of the actuator and the valve member can be set as a function of a pressure applied to the pilot chamber, and further comprising a sensor device for detecting a position of the valve member and/or the actuator along a movement axis, and the sensor device comprises an electric coil arrangement which forms a ring around at least one fluid port from the group comprising the operating port, the inlet port and the outlet port.

Valve module

An apparatus and method for powering opposing corona chargers for discharging moving receiver sheets. The discharging capacity of the chargers is expanded by adding a high voltage DC offset to a current regulated, AC voltage limited power supply.

Current regulated, voltage limited, AC power supply with DC offset for corona chargers

A method and apparatus for provision of a power supply that combines the advantages of current regulation with voltage limitation to enable corona chargers that can be run at higher current regulated set points for lower resistance sheets. The voltage limit will protect against arcing when high resistance media is used. This wider operation window can be provided without the need to track sheet types in the process and shift the operating set points, which would result in much more complicated machine control algorithms. The regulation and limit reference controls retain the ability of changing the operating set points of the power supply, such that it can be adapted to alternate physical configurations of the discharging system and the printing system.

Current regulated voltage limited high voltage power supply for corona charger

In a reproduction apparatus having a rotatable imaging roller upon which an image is formed, and a rotatable transfer roller for transferring an image from the imaging roller to a receiver member, a device for mounting the transfer roller to substantially compensate for changes in engagement between the imaging roller and the transfer roller during image transfer. The mounting device includes a bearing assembly for supporting the transfer roller for rotation. A flexible member is associated with the bearing assembly. The flexible member provides movement of the bearing assembly by urging the bearing assembly in a direction to maintain, at least over a limited distance, the transfer roller in constant force engagement with the imaging roller so as to substantially prevent any change in the angular speed relationship therebetween.

Compliant intermediate transfer roller with flexible mount

A device ( ) for charging and/or discharging of printing media ( ) in printing presses and copiers, with at least one corona wire ( &prime;), as well as a guiding device ( ) for printing media ( ) with bridging members ( ), which bridge the interior of the discharging device and/or charging device ( ) in the transport direction ( ), whereby the guiding device ( ) has, below the bridging members ( ) on the side turned toward at least one corona wire ( &prime;), slim guide fingers ( &prime;), which extend into the border areas ( &prime;) of the device ( ) parallel to at least one corona wire ( &prime;) and from the side outside the surfaces covered by the printing media suppress the thickest ion flow, which is directed to the printing media ( ) for discharging of the printing media ( ).

Device for charging and discharging of printing media in printing presses and copiers

A cantilever drum-mounting apparatus adapted for use in a document printer/copier having a housing having: an opening therein; a carriage movably mounted within the opening and adapted to receive, retain and rotatably support an axle of a drum; and a plurality of guide mechanisms, rotatably mounted on the carriage and engageable with opposing outer surface of the housing, for limiting movement of the carriage to a direction substantially normal to the axis for drum rotation. Preferably, movement of the carriage is controlled by the actuator of an air cylinder that cooperates with one or more reference surfaces within the housing opening to locate the drum axle at a desired position.

Cantilever drum mount for document printer/copier

A cylinder with a functional layer ( ) and with a supporting body ( ), which passes through the cylinder. On the supporting body ( ), a sleeve that accommodates the functional layer ( ) is supported at ends ( ). The supporting body ( ) is for its part accommodated on supporting elements ( ) provided on the frame side. The cylinder sleeve ( ) that accommodates the functional layer ( ) can be centered in relation to the axis of rotation ( ) by centering faces ( ) formed at the ends ( ). One end of the cylinder can be exposed at the supporting element ( ).

Replaceable cylinder element including cylindrical sleeve and end members having complementary centering faces

Controlling image defects related to transfer or fusing of toner images in an electrostatographic machine, wherein engagement between an operational surface of a toner image bearing member or fusing member and an operational surface of another member forming a nip is adjusted using an engagement adjustment device in order to reduce or eliminate image defects relating to an overdrive or underdrive associated with the nip. The engagement adjustment device provides a preselected amount of overdrive or underdrive between a toner image bearing member or fusing member and a receiver member, which preselected amount includes zero.

Method and apparatus for controlling overdrive in a frictionally driven system including a conformable member

An apparatus for transporting and delivering individual sheets ( ) within a final processing unit ( ) downstream from a printing or copying unit ( ). In the final processing unit ( ) an input transport roller pair ( ) is followed by a sheet transport track ( ) having a stop surface ( ) for lateral registration of the sheets ( ) passing through, a working delivery surface ( ) having a stop surface ( ) for end-surface registration of the sheets ( ) being arranged at the end of the sheet transport track ( ). Arranged after the working delivery surface ( ) is a final delivery container for the individual sheets or sheet stacks, which extends at a 90&deg; angle to the sheet transport track ( ).

Apparatus for transporting and delivering individual sheets

An apparatus for mounting corona wires in a corona charger comprises a wire dispenser pen with an inner wall forming a hollow shaft adapted to receive the wire; and a support structure attached to the wire dispenser pen. The support structure is adapted to receive a spool of wire.

Method of mounting corona wire a corona charger housing of an electrophotographic apparatus and an apparatus for mounting corona wires

An apparatus comprising: (i) a corona charger housing including at least two cavities; (ii) a corona wire strung across the housing, the corona wire having at least one end located in one of the cavities; and (iii) a pin at least partially located inside one of the cavities, the pin fixedly securing the end of corona wire inside the cavity. A preferred embodiment of the present invention includes (i) a corona charger housing including at least two cavities; (ii) a corona wire having two ends, the corona wire being strung across the housing, the corona wire having each of its ends located in one of the cavities; (iii) pins at least partially located inside the cavities. The pins fixedly secure the ends of corona wire inside the cavities.

Growing community of inventors

Kirchheim/Teck, Germany

Andreas Dickhoff