Patents Represented by Attorney J. J. Ralabate
  • Patent number: 4251612
    Abstract: This invention relates to an electrophotographic imaging member or device and an imaging method using this imaging member, which member or device is comprised of a substrate, a layer of a charge carrier injecting material comprised of carbon or graphite dispersed in a polymer, a layer of a charge carrier transport material, a layer of a photoconductive charge carrier generating material and an electrically insulating overcoating layer.
    Type: Grant
    Filed: May 12, 1978
    Date of Patent: February 17, 1981
    Assignee: Xerox Corporation
    Inventors: Joseph Y. C. Chu, Simpei Tutihasi
  • Patent number: 4227795
    Abstract: An optical system in which a movable photosensitive member is exposed to a light image of an original document. The optical system includes a light source which illuminates a screen having at least two adjacent spaced rows of opaque dots. Movement of the photosensitive member controls activation of the light source. The light source is activated periodically and responds to the photosensitive member moving a distance corresponding to the distance between adjacent rows of opaque dots on the screen.
    Type: Grant
    Filed: January 12, 1977
    Date of Patent: October 14, 1980
    Assignee: Xerox Corporation
    Inventors: Richard M. Bobbe, John A. Durbin, Richard F. Lehman, Frederick A. Seedhouse
  • Patent number: 4220325
    Abstract: An apparatus in which a sheet advancing along a pre-determined path is collected in one of a plurality of movable sheet receiving stations. One of the receiving stations is aligned with the sheet path. A guide moves from an inoperative position spaced from the receiving stations to an operative position coupling the aligned sheet receiving station with the sheet path. This enables the sheet to advance into the receiving station.
    Type: Grant
    Filed: January 15, 1979
    Date of Patent: September 2, 1980
    Assignee: Xerox Corporation
    Inventors: Donald W. Tates, Gary A. Nobles
  • Patent number: 4218530
    Abstract: A toner and process of its manufacture for use in electrostatic development processes involving a magnetic toner without carrier are disclosed. The toner of the invention is semiconductive and effectively transferred from photoreceptors to plain paper after development. The preferred process of formation involves spray drying from a slurry solution.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: August 19, 1980
    Assignee: Xerox Corporation
    Inventor: Chin H. Lu
  • Patent number: 4214746
    Abstract: A sorting apparatus in which a sheet loading station is arranged to advance sheets into individual sheet receiving members of one of at least two groups of sheet receiving members. The other group of sheet receiving members is positioned at one of two sheet unloading stations. After loading and unloading sheets from the respective groups of sheet receiving members, the loaded group of sheet receiving members moves to the other sheet unloading station as the unloaded group of sheet receiving members returns to the sheet loading station.
    Type: Grant
    Filed: January 15, 1979
    Date of Patent: July 29, 1980
    Assignee: Xerox Corporation
    Inventors: Thomas P. Redding, Glenn M. Herbert, Alistair J. Caldwell
  • Patent number: 4206994
    Abstract: An apparatus in which an endless belt is supported for movement in a recirculating path. A pressurized fluid flows between a support post and the belt to reduce friction therebetween. The post is urged resiliently toward the belt to maintain the belt under substantially uniform tension.
    Type: Grant
    Filed: September 20, 1978
    Date of Patent: June 10, 1980
    Assignee: Xerox Corporation
    Inventors: Morton Silverberg, Ralph A. Hamaker
  • Patent number: 4198155
    Abstract: A belt assembly in which a sub-belt has a photoconductive belt secured releasably thereto. The sub-belt and photoconductive belt move in unison with one another about a defined path.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: April 15, 1980
    Assignee: Xerox Corporation
    Inventor: Morton Silverberg
  • Patent number: 4197002
    Abstract: An apparatus in which a belt is supported for movement in a pre-determined path. The lateral movement of the belt relative to the pre-determined path is controlled. A pneumatic system provides pressurized fluid to at least partially support the belt and control the lateral movement thereof.
    Type: Grant
    Filed: November 15, 1978
    Date of Patent: April 8, 1980
    Assignee: Xerox Corporation
    Inventors: Ralph A. Hamaker, Morton Silverberg
  • Patent number: 4197242
    Abstract: The invention of this application is directed to dipotassium phthalocyanine glyme and crown ether complexes, such as for example dipotassium phthalocyanine bis (methoxy ethyl) ether and dipotassium phthalocyanine bis (18-crown-6) ether. Methods for obtaining these complexes by reacting metal free phthalocyanine with potassium hydroxide and the appropriate glyme or crown ethers in the presence of water is also described. Further methods for obtaining purified metal free phthalocyanines from the glyme and crown ether complexes are disclosed. These materials have many uses including pigments, electrophotographic photoreceptors and photoreceptor devices.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: April 8, 1980
    Assignee: Xerox Corporation
    Inventor: Wolfgang H. H. Gunther
  • Patent number: 4194666
    Abstract: An apparatus in which articles are stapled to one another. A staple is driven through the article so that a portion thereof protrudes therefrom. The staple legs protruding through the articles are bent into substantial contact therewith so as to clinch the staples. In the clinched position, the staple legs are closely adjacent to one another and may be overlapping. During the clinching operation, the staple legs are guided by a groove in the surface affecting bending. Initially, the stapled leg is received in the central region of the groove. The central region of the groove has a greater cross-sectional area than the end region thereof.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: March 25, 1980
    Assignee: Xerox Corporation
    Inventors: Charles W. Spehrley, Jr., Brian F. Walsh
  • Patent number: 4192603
    Abstract: A photoconductor belt assembly employs a sub-belt having a photoconductive belt secured releasably thereto. The photoconductive belt is advanced from storage and positioned in contact with the sub-belt so as to be readily attached thereto. As the sub-belt advances, the photoconductive belt is positioned thereon in a substantially wrinkle-free condition.
    Type: Grant
    Filed: September 27, 1978
    Date of Patent: March 11, 1980
    Assignee: Xerox Corporation
    Inventor: Kenneth J. Buck
  • Patent number: 4192902
    Abstract: A method of toner formation wherein a dispersion of magnetic pigment, resin, solvent and surfactant is spray dried to form the toner particles. Two preferred processes are disclosed: (1) A dispersion of magnetite, resin, fatty acid, and solvent is prepared by high speed agitation. The dispersion is then spray dried to form toner particles. (2) A dispersion of magnetite, fatty acid and solvent is subject to reflux heating, followed by addition of resin solution prior to spray drying to form toner particles.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: March 11, 1980
    Assignee: Xerox Corporation
    Inventor: Chin H. Lu
  • Patent number: 4189223
    Abstract: An apparatus in which an endless belt is at least partially supported on the fluid film in a predetermined path of movement. A pneumatic system, responsive to a deviation of the belt from the path of movement, restrains the movement of the belt to the pre-determined path of movement.
    Type: Grant
    Filed: July 7, 1978
    Date of Patent: February 19, 1980
    Assignee: Xerox Corporation
    Inventor: Morton Silverberg
  • Patent number: 4188907
    Abstract: An apparatus in which particles are dispensed from an open-ended chamber. An oscillatory magnetic field vibrates a magnetic member at least partially immersed in the particles. This prevents bridging and caking of the particles to facilitate flow of the particles from the open end of the chamber.
    Type: Grant
    Filed: August 11, 1977
    Date of Patent: February 19, 1980
    Assignee: Xerox Corporation
    Inventor: Anthony F. Lipani
  • Patent number: 4187969
    Abstract: An apparatus in which a stack of sheets is brought into contact with the clamping surface of a fixed stapler head. After the stack is secured against the clamping surface, a staple is driven therethrough.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: February 12, 1980
    Assignee: Xerox Corporation
    Inventor: Charles W. Spehrley, Jr.
  • Patent number: 4188213
    Abstract: A color process in which color copies of an original document containing color information are reproduced. In this process, successive single color electrostatic latent images are recorded on an image bearing member. Each successive single color electrostatic image is developed with particles containing a predetermined colorant therein. These particles are transferred from the single color electrostatic latent images in a prescribed sequence. The sequence of transfer is such that the colorant of each successive layer of transferred particles corrects for the impurities contained in the colorant of the previously transferred layer of particles. The final color rendition of the copy is, thereby, color corrected so as to substantially approximate that of the original document.
    Type: Grant
    Filed: March 28, 1975
    Date of Patent: February 12, 1980
    Assignee: Xerox Corporation
    Inventor: Richard F. Lehman
  • Patent number: 4185916
    Abstract: A composite particle comprising a conductive portion and an insulating portion. The insulating portion is integral and contiguous with the conductive portion.
    Type: Grant
    Filed: April 8, 1977
    Date of Patent: January 29, 1980
    Assignee: Xerox Corporation
    Inventors: Roger L. Miller, Lloyd F. Bean
  • Patent number: 4184622
    Abstract: A stapling apparatus in which a staple is supported laterally as it is being driven into an article to prevent tilting thereof. The staple lateral support is retractable to facilitate removal of a jammed staple.
    Type: Grant
    Filed: July 7, 1978
    Date of Patent: January 22, 1980
    Assignee: Xerox Corporation
    Inventor: Charles W. Spehrley, Jr.
  • Patent number: 4181248
    Abstract: An apparatus in which a plurality of sheets are stapled to one another. The stapling frequency is dependent upon the number of sheets being stapled together.The foregoing abstract is neither intended to define the invention disclosed in the specification, nor is it intended to be limiting as to the scope of the invention in any way.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: January 1, 1980
    Assignee: Xerox Corporation
    Inventor: C. W. Spehrley, Jr.
  • Patent number: D256976
    Type: Grant
    Filed: December 5, 1978
    Date of Patent: September 23, 1980
    Assignee: Xerox Corporation
    Inventor: William B. Webster