Xerox Corporation

Other

Robert Alan Clark

William J Nowak

Paul J McConville

Linn C Hoover

Chu-Heng Liu

Michael F Zona

Jorge Antonio Alvarez

Barry Paul Mandel

Peter John Knausdorf

Thomas Jay Wyble

Kathleen A Feinberg

David Allen Mantell

Peter Johan Nystrom

Bruce Earl Thayer

Robert Michael Lofthus

Ali Rafic Dergham

Kenneth Paul Moore

Christopher G Lynn

Jess Robert Gentner

Richard Alan Campbell

Thomas C Hollar

Glenn David Batchelor

William Joseph Hannaway

Senthil Sivaraman

William W Nowak

Douglas K Herrmann

Zhigang Fan

Reiner Eschbach

Jason Mathew LeFevre

Steven Robert Moore

Seemit Praharaj

Lloyd A Williams

Michael Jon Levy

James Edward Williams

David A VanKouwenberg

Timothy Gordon Shelhart

Ming Yang

Brian Roy Ford

David Alan Vankouwenberg

Arthur Harold Kahn

Frank Michael Goetz

John T Newell

Ernest L DiNatale

Bruce Allen Thompson

John Parnall

Robert A Austin

Willam J Nowak

Printing devices include a printing engine and a media tray connected to a frame. The media tray is adapted to hold a stack of media supplied to the printing engine for printing. A magnetic trailing edge guide that is shaped to contact a corner of the stack of media is connected to a tether that is connected to the frame. A storage device is connected to the frame, and the storage device is shaped to accommodate the magnetic trailing edge guide. The length of the tether allows the magnetic trailing edge guide to reach the corner of the stack of media and to reach the storage device. The magnetic trailing edge guide includes a magnetic element adapted to magnetically hold to at least the media tray and the storage device.

Tethered trailing edge media guide

A method of operating an additive manufacturing system feeds solid extrusion material into a heater using a slip clutch coupled to an actuator of a mechanical driver to supply thermoplastic material into a manifold in an extruder head. The method sets a speed of the actuator so the actuator operates at a rotational speed that is slightly greater than the rotational speed of the mechanical mover. This method helps maintain the pressure of the thermoplastic material in the manifold of the extruder head in a predetermined range no matter how many nozzles are opened in the extruder head.

Method for operating a constant pressure filament driver to an extruder head in a three-dimensional object printer

A cap is positioned to contact a printhead when the printhead is not ejecting liquid ink. The cap and the printhead create a sealed space adjacent printhead nozzles when contacting each other. A flexible blade is positioned to contact the printhead when the printhead is not in contact with the cap. The flexible blade is adapted to fold over to spread a liquid solution on the nozzles in a first direction, and the flexible blade is adapted to remove excess amounts of the liquid solution from the nozzles in a second direction. A humidifier is connected to the cap and adapted to supply a moisture form of the liquid solution to the sealed space. A moisture sensor is connected to the cap. The humidifier is adapted to vary supply of the moisture to the sealed space based on the amount of moisture detected by the moisture sensor.

Cap and application devices stabilizing ink in nozzles of inkjet printheads

A three-dimensional (3-D) printer includes build and support material development stations positioned to transfer layers of build and support materials to an intermediate transfer surface. The intermediate transfer surface transfers a layer of the build and support materials to a platen each time the platen contacts the intermediate transfer surface. A sensor detects the thickness of the layer on the platen, and a mechanical planer is positioned to contact and level the layer on the platen as the platen moves past the mechanical planer. Additionally, a feedback loop is electrically connected to the sensor and the mechanical planer. The mechanical planer adjusts the amount of the build material and the support material removed from the layer based on the thickness of the layer on the platen, as determined by the sensor.

Electrostatic 3-D printer using layer and mechanical planer

Devices include one or more inkjet printheads, a reusable jetting sheet that is adjacent to nozzles of the printheads, support structures (e.g., drive rollers) contacting the sheet, and a cleaning station contacting the sheet. The reusable jetting sheet includes an opening, that is at least as large as the sets of nozzles, and a jetting area spaced from the opening. The support structures are adapted to move the reusable jetting sheet relative to the sets of nozzles. The inkjet printheads are adapted to eject ink from at least some of the nozzles, through the opening, to print media when the opening is positioned adjacent to the sets of nozzles, to print on print media. The inkjet printhead is further adapted to eject ink from at least some of the nozzles to the jetting area when the jetting area is positioned adjacent to the sets of nozzles to perform maintenance jetting.

Inkjet reusable jetting sheet with cleaning station

A 3-D printer includes build and support material development stations that electrostatically transfer build material and support material to an ITB. The ITB transfers a layer of build and support material to a platen each time the platen contacts one of the layers on the ITB, to successively form a freestanding stack of the layers on the platen. A sensor is positioned to generate a topographic measurement of the layer on the platen, and an aerosol applicator is positioned to propel build and support material on to the layer on the platen. The aerosol applicator controls the build and support material being propelled, based on the topographic measurement from the sensor through a feedback loop, to adjust the amount and location of the build material and the support material propelled on to the layer, and thereby control the flatness of surface topology of the layers in the freestanding stack on the platen.

Electrostatic 3-D printer controlling layer topography using aerosol applicator

An additive manufacturing system includes a slip clutch coupled to an actuator of a mechanical driver that feeds solid extrusion material into a heater for supplying thermoplastic material to a manifold in an extruder head. A speed of the actuator can be set to enable the actuator to operate at a rotational speed that is slightly greater than the rotational speed of the mechanical mover. This configuration enables the pressure of the thermoplastic material in the manifold of the extruder head to be in a predetermined range no matter how many nozzles are opened in the extruder head.

Constant pressure filament driver for extruder heads in three-dimensional object printers

An apparatus is disclosed that includes a computer operated cutting and creasing tool configured to move only in an X direction during use, a cutting and creasing platform having an elastically deformable creasing portion configured to support a sheet of media during contact with a creasing tip and a non-deformable cutting portion configured to support the sheet during contact with a cutting blade, and a positioner configured to draw the sheet of media along the cutting and creasing platform during cutting and creasing. Methods of making and using the apparatus also are disclosed.

Apparatus, system and method for cutting and creasing media

3-D printers include an intermediate transfer surface that transfers a layer of material to a platen each time the platen contacts the intermediate transfer surface to successively form a freestanding stack of layers of the material on the platen. A sensor detects the thickness of the layer on the platen after a fusing station fuses the layer. A feedback loop is electrically connected to the sensor and a development station (that includes a photoreceptor, a charging station providing a static charge to the photoreceptor, a laser device exposing the photoreceptor, and a development device supplying the material to the photoreceptor). The development station adjusts the development bias of the development device, based on a layer thickness measurement from the sensor through the feedback loop, to control the thickness of subsequent ones of the layers transferred from the intermediate transfer surface to the freestanding stack on the platen.

Electrostatic 3-D printer controlling layer thickness using feedback loop to development device

A system and method are provided for implementing a unique electrophotographic layered manufacturing scheme for creating higher fidelity electrophotographic composite laminate layers using tri-level electrophotography or electrostatic imaging scheme as a process for rendering individual laminate layers to be built up to form and/or manufacture three-dimensional objects, parts and components as 3D objects. A multi-stage 3D object forming scheme is described involving steps of multi-component laminate forming in a particularized electrophotographic layer forming process. This process renders a part component and a support component precisely next to one another with a single exposure by an exposing device to form a latent image of variable discharge voltages. Multiple toner product sources are used to dispose part component toner and support component toner in the forming of the multi-component laminate layer.

Systems and methods for implementing electrophotographic layered manufacturing of three dimensional (3D) objects, parts and components using tri-level electrophotography

A personalized packaging production system includes an in-feed tray, an out-feed tray, a cutting table disposed intermediate the in-feed tray and the out-feed tray and an interchangeable cutting/creasing assembly. A sheet feeder is positioned between the in-feed tray and the cutting table to feed media sheets from the in-feed tray to the cutting table, and an exit nip is positioned between the out-feed tray and the cutting table to remove media sheets from the cutting table to the out-feed tray.

Personalized packaging production system

Method and apparatus useful for the construction of exterior wall systems of buildings. The apparatus has an outer U-channel having a front formed lip thereon along with an inner wall together forming a base portion of the U-channel within which the bottom of the outer piece of siding is placed. The apparatus also includes a rear wall for supporting the inner piece of siding in an upright position along with a ledge upon which the bottom of the inner piece of siding rests. The rear wall of the apparatus may have apertures herein for receiving fasteners along with weep holes in the base of the U-channel.

Method and apparatus for construction of exterior wall system

A three-dimensional (3-D) printer includes build and support material development stations positioned to transfer layers of build and support materials to an intermediate transfer surface. A platen having a flat surface is positioned to contact the intermediate transfer surface. The intermediate transfer surface transfers a layer of the build and support materials to the flat surface of the platen as the platen contacts one of the layers on the intermediate transfer surface. A dispenser is positioned to deposit a leveling material on the layer on the platen, and a mechanical planer is positioned to contact and level the leveling material on the layer on the platen to make the top of the leveling material parallel to the flat surface of the platen.

Electrostatic 3-D printer using leveling material and mechanical planer

Growing community of inventors

Williamson, NY, United States of America

Robert Alan Clark