Patents Represented by Attorney R. Zibelli

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  • Liquid ink transfer system
    Patent number: 4736227
    Abstract: An apparatus in which a liquid image is transferred from a surface to a substantially electrically non-conductive, flexible copy sheet with the liquid image being charged to one polarity and the surface being charged to a polarity opposite to the polarity of the charge of the liquid image. A first charge is applied on the copy sheet. The first charge is of the same polarity as the polarity of the charge of the liquid image. This causes the copy sheet to adhere releasably to the surface with the liquid image being interposed therebetween. A second charge is applied on the copy sheet after the first charge has been applied thereon. The second charge is of an opposite polarity to the polarity of the charge of the liquid image. This causes the liquid image to be attracted to the copy sheet.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: April 5, 1988
    Assignee: Xerox Corporation
    Inventors: Henry R. Till, Fredrick A. Warner, Charles A. Radulski
  • Editing copying machine
    Patent number: 4734789
    Abstract: An apparatus in which an altered copy of an original document is produced. An editing device associated with an electrophotographic printing machine changes the information in the original document and generates a signal indicative of the changes therein. A liquid crystal display overlays the original document. The areas selected for editing are indicated on the liquid crystal display.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: March 29, 1988
    Assignee: Xerox Corporation
    Inventors: Craig A. Smith, Thomas B. Wall, Robert L. Kurtz, Ruediger W. Knodt
  • Filter regeneration in an electrophotographic printing machine
    Patent number: 4733272
    Abstract: A reproducing machine in which a liquid image including a liquid carrier having pigmented particles dispersed therein is transferred to a sheet of support material. In the operative mode, when the sheet of support material having the liquid image thereon is present, a fuser applies heat thereto to remove liquid carrier therefrom so as to dry the sheet of support material, and fuse the pigmented particles thereto in image configuration. In the standby mode, when the sheet of support material is not present, the fuser still generates heat. The liquid carrier removed from the sheet of support material by the fuser is collected in a condenser. Air flowing from the condenser passes through a filter to remove residual liquid carrier therefrom, in the standby mode, heated air from the fuser is directed to the filter to regenerate the filter.
    Type: Grant
    Filed: July 17, 1986
    Date of Patent: March 22, 1988
    Assignee: Xerox Corporation
    Inventors: William C. Howe, Dexter A. Dyer
  • Vertically oriented photoconductive drum
    Patent number: 4731631
    Abstract: A printing machine including a drum adapted to have a latent image recorded on the surface thereof. The drum is positioned with the longitudinal axis thereof extending in a direction substantially transverse to the horizontal. The latent image is developed with a liquid developer to form a liquid image on the surface of the drum. The liquid image is transferred to a copy sheet. Residual liquid developer removed from the surface of the drum by the cleaning unit, flows in a downwardly direction under the influence of gravity to a liquid collector housing located at the bottom of the cleaning unit.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: March 15, 1988
    Assignee: Xerox Corporation
    Inventors: Edwin R. Monkelbaan, Joseph Fantuzzo
  • Liquid carrier recovery system
    Patent number: 4731636
    Abstract: An apparatus in which a developing liquid used in an electrophotographic printing machine to develop an electrostatic latent image on a photoconductive surface is reclaimed. The developing liquid is vaporized to dry the wet copy sheet. The developing liquid vapor enters the chamber of a housing and condenses on the surface of a cooling fluid as it passes therethrough. The developer liquid is immiscible in the cooling fluid and floats on the surface thereof so as to exit from the outlet port of the chamber of the housing for recirculation to the development system.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: March 15, 1988
    Assignee: Xerox Corporation
    Inventors: William C. Howe, Thomas C. Hsu
  • Liquid ink fusing and carrier removal system
    Patent number: 4731635
    Abstract: A reproducing machine in which an electrostatic latent image recorded on a photoconductive member is developed with a liquid developer material comprising at least a liquid carrier having pigmented particles dispersed therein. The developed image is transferred from the photoconductive member to a sheet of support material. A pair of rollers cooperate with one another to define a nip through which the sheet of support material having the developed image thereon passes. The pair of rollers apply heat and pressure to the sheet of support material having the developed image thereon. The pigmented particles are fused to the sheet of support material in image configuration and the vaporized liquid carrier removed therefrom.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: March 15, 1988
    Assignee: Xerox Corporation
    Inventors: Thomas F. Szlucha, Dexter A. Dyer, Michael J. Langdon
  • Timing pulse generator for an electrophotographic printing machine
    Patent number: 4731638
    Abstract: An apparatus which generates timing pulses in an electrophotographic printing machine. A flexible member having spaced, marks formed photographically thereon is mounted on the shaft of the photoconductive member to rotate in unison therewith. As the flexible member rotates, the spaced marks are detected to generate a timing pulse output in response thereto. The detector prevents the member from deflecting to control the axial motion of the flexible member during the rotation thereof.
    Type: Grant
    Filed: November 26, 1986
    Date of Patent: March 15, 1988
    Assignee: Xerox Corporation
    Inventor: Abraham Cherian
  • Roll fusing for liquid images
    Patent number: 4727394
    Abstract: An electrophotographic printing machine in which an electrostatic latent image recorded on a photoconductive member is developed with a liquid developer material having at least a liquid carrier with pigmented particles dispersed therein. The developed image is transferred from a photoconductive member to a sheet of support, material. Heat and pressure are applied to the developed image on the sheet of support material to vaporize substantially all of the liquid carrier transferred to the sheet of support material and to substantially permanently fuse pigmented particles to the sheet of support material in image configuration.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: February 23, 1988
    Assignee: Xerox Corporation
    Inventors: Raphael F. Bov, Jr., Dexter A. Dyer
  • Developer unit using three angers in three chambers
    Patent number: 4724457
    Abstract: An apparatus in which a latent image recorded on a member is developed with a developer material comprising at least carrier granules and toner particles. Toner particles are dispensed into the developer housing and mixed with unused developer material. The toner particles and developer material are advanced along an extended path so that the toner particles are gently mixed and triboelectrically charged to substantially the nominal level prior to contacting the latent image. A system of this type is particularly useful for toner particles requiring extensive gentle mixing to achieve the desired triboelectric charge.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: February 9, 1988
    Assignee: Xerox Corporation
    Inventors: Christian O. Abreu, Cyril G. Edmunds, Mark A. Scheuer
  • Apparatus for drying a web of sheet material having a fused image thereon
    Patent number: 4723147
    Abstract: A reproducing machine in which a latent image recorded on a member is developed with a liquid developer material including at least a liquid carrier having pigmented particles dispersed therein. The developed image is transferred from the member to a portion of a moving web of sheet material. The pigmented particles are fused to the web of sheet material in image configuration. A flow of heated air is directed over an extended region of the web of sheet material in a direction parallel to the direction of the movement of the web and in a direction opposed to the direction of movement of the web to vaporize liquid carrier therefrom so as dry the web of sheet material.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: February 2, 1988
    Assignee: Xerox Corporation
    Inventor: Dexter A. Dyer
  • Developing or cleaning unit for an electrophotographic printing machine
    Patent number: 4723144
    Abstract: A processing station for use in electrophotographic printing machines to clean the photoconductive belt or develop the electrostatic latent image recorded thereon. A roller transports single component magnetic particles into contact with the photoconductive belt. The belt is deflected around the exterior circumferential surface of the roller to form an extended cleaning or development zone.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: February 2, 1988
    Assignee: Xerox Corporation
    Inventor: Morton Silverberg
  • Color toner concentration control system
    Patent number: 4721978
    Abstract: An apparatus in which the concentration of toner particles used to form a highlight color document is controlled. The percentage of the document arranged to have highlight color portions thereon is determined and a first signal corresponding thereto generated. A second signal corresponding to the rate of toner particle usage per document is transmitted. A third signal corresponding to the total number of documents being reproduced is produced. The first, second and third signals are multiplied to generate a control signal corresponding to the required dispense rate for the toner particles forming the highlight color portions of the document.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: January 26, 1988
    Assignee: Xerox Corporation
    Inventor: James A. Herley
  • Half-mode copying machine
    Patent number: 4716439
    Abstract: An electrophotographic printing machine in which two original documents are supported on the platen of an exposure station. Both original documents are flash illuminated to record an electrostatic latent image on a photoconductive surface. One-half of the electrostatic latent image is erased. In this way, one of the original documents is reproduced on a copy sheet. During the next successive machine cycle, a second electrostatic latent image corresponding to both original documents is recorded on the photoconductive member. The other half of the electrostatic latent image is erased and a copy formed corresponding to the other original document.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: December 29, 1987
    Assignee: Xerox Corporation
    Inventor: Thomas Acquaviva
  • Simultaneous transfer and fusing in electrophotography
    Patent number: 4708460
    Abstract: An apparatus in which a copy of an original document is formed. A liquid image is transferred from a photoconductive member to an intermediate member positioned closely adjacent thereto. The liquid image is subsequently simultaneously transferred and fused onto a copy sheet to form a copy of the original document.
    Type: Grant
    Filed: July 25, 1986
    Date of Patent: November 24, 1987
    Assignee: Xerox Corporation
    Inventor: Michael J. Langdon
  • Device for cleaning a charging member
    Patent number: 4707115
    Abstract: An apparatus in which a latent image is developed with marking particles. The marking particles are transported to the latent image. As the marking particles are being moved to the latent image, they are electrically charged by a plate in contact with the transport. The plate, charging the marking particles, is periodically cleaned to remove particles adhering thereto.
    Type: Grant
    Filed: August 28, 1986
    Date of Patent: November 17, 1987
    Assignee: Xerox Corporation
    Inventor: Jan Bares
  • Sheet binding cartridge
    Patent number: 4707215
    Abstract: The present invention is an operator replaceable cartridge which is used in an apparatus for binding together a plurality of sheets to form a bound booklet. The flow of adhesive stored in the chamber of the housing is regulated to control the distribution of the adhesive on an applicator blade. The applicator blade is mounted on the housing and is of the length at least equal to the length of the marginal region of the sheet. In operation, the applicator blade reciprocates into and out of contact with the marginal region of the sheet to form a line of adhesive thereon.
    Type: Grant
    Filed: November 4, 1985
    Date of Patent: November 17, 1987
    Assignee: Xerox Corporation
    Inventor: Richard F. Scarlata
  • Liquid development system
    Patent number: 4707112
    Abstract: An electrophotographic printing machine in which an electrostatic latent image recorded on a photoconductive surface is developed with a liquid developer material comprising at least a liquid carrier having marking particles therein. The liquid developer material is furnished to the electrostatic latent image recorded on the photoconductive surface in a development zone to develop the latent image. Marking particles are substantially uniformly dispersed in the liquid carrier of the liquid developer material at the entrance to the development zone so as deflocculate the marking particles.
    Type: Grant
    Filed: May 16, 1986
    Date of Patent: November 17, 1987
    Assignee: Xerox Corporation
    Inventor: George C. Hartmann
  • Transfer apparatus
    Patent number: 4690539
    Abstract: An apparatus in which a plurality of liquid images are transferred from a photoconductive member to a copy sheet. The liquid images, which include a liquid carrier having toner particles dispersed therein, are attracted from the photoconductive member to an intermediate web. A substantial amount of the liquid carrier is removed from the intermediate web and the toner particles are secured thereon. Thereafter, another liquid image having toner particles of a different color from the toner particles of the first liquid image, is attracted to the intermediate member. Once again, the liquid carrier material is removed from the web and the toner particles of the second liquid image are secured thereon. Thereafter, all of the toner particles are transferred from the intermediate member to the copy sheet, in image configuration.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: September 1, 1987
    Assignee: Xerox Corporation
    Inventors: Charles A. Radulski, Henry R. Till
  • Liquid carrier reclaiming apparatus
    Patent number: 4687319
    Abstract: An apparatus in which a developing liquid used in an electrophotographic printing machine to develop an electrostatic latent image on a photoconductive surface is reclaimed. The developing liquid is vaporized to dry the wet copy sheet. The developing liquid vapor enters the chamber of a housing where it is thermoelectrically cooled. In this way, the developing liquid vapor in the chamber of the housing liquefies. A Peltier heat pump is employed to cool the chamber of the housing so as to liquefy the developing liquid vapor.
    Type: Grant
    Filed: June 18, 1986
    Date of Patent: August 18, 1987
    Assignee: Xerox Corporation
    Inventor: Satchidanand Mishra
  • Liquid development system
    Patent number: 4686936
    Abstract: An electrophotographic printing machine in which an electrostatic latent image recorded on a photoconductive member is developed with a liquid developer material having at least a liquid carrier with marking particles dispersed therein. The liquid developer material is advanced on a roll from a supply thereof to the latent image at a development zone. Marking particles are moved through the liquid carrier onto the surface of the roll and a resilient blade removes excessive liquid developer material from the roll prior to the development zone.
    Type: Grant
    Filed: May 22, 1986
    Date of Patent: August 18, 1987
    Assignee: Xerox Corporation
    Inventor: Che C. Chow