Patents Represented by Attorney, Agent or Law Firm Peter H. Kondo
  • Patent number: 6312522
    Abstract: Coating apparatus including a coating vessel including a vertical wall having a vertical interior surface having a circular cross section and an imaginary vertical axis, an open top and a bottom, a vertical shaft supported on the bottom of the coating vessel, the shaft having an axis aligned coaxially with the imaginary vertical axis of the interior surface having the circular cross section, and a coating liquid inlet/outlet adjacent to the bottom of the coating vessel.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: November 6, 2001
    Assignee: Xerox Corporation
    Inventors: Kenny-tuan T. Dinh, Richard H. Nealey, John G. Matta
  • Patent number: 6214514
    Abstract: A process for fabricating electrophotographic imaging members including providing an imaging member including a substrate coated with a charge generating layer having an exposed surface, applying a first solution including a charge transporting small molecule and film forming binder to the exposed surface to form a first charge transporting layer having a thickness of greater than about 13 micrometers and less than about 20 micrometers in the dried state and an exposed surface, and applying at least a second solution having a composition substantially identical to the first solution to the exposed surface of the first charge transporting layer to form at least a second continuous charge transporting layer, the at least second charge transporting layer having a thickness in the dried state less than about 20 micrometers in the dried state, the at least second charge transporting layer, and any subsequent applied solution having a composition substantially identical to the first solution.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: April 10, 2001
    Assignee: Xerox Corporation
    Inventors: Kent J. Evans, David A. DeHollander, Michael S. Roetker
  • Patent number: 6214419
    Abstract: A process for immersion coating of a substrate including positioning a substrate having a top and bottom within a coating vessel having an inner surface to define a space between the inner surface and the substrate, filling at least a portion of the space with a coating mixture; stopping the filling slightly below the top of the substrate, initiating removal of the coating mixture at a gradually increasing rate to a predetermined maximum flow rate in a short predetermined distance, and continuing removal of the coating mixture at substantially the predetermined maximum flow rate to deposit a layer of the coating mixture on the substrate.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: April 10, 2001
    Assignee: Xerox Corporation
    Inventors: Kenny-tuan T. Dinh, Richard H. Nealey, John G. Matta
  • Patent number: 6207337
    Abstract: A material handling system for dip coating at least a first drum having a first predetermined length in a first coating cycle and a second drum of a second different predetermined length in a different coating cycle including a carrier device for carrying at least one drum, a coating bath container for depositing a layer of coating material onto at least one drum, a mechanism for raising and lowering the coating bath container between at least a first position and a second position higher than the first position, and a transport device for vertically transporting the carrier device a first predetermined distance from a home position for the first drum and a second predetermined different distance from the home position for the second drum, the first predetermined distance from a home position for the first drum and the second predetermined different distance from the home position for the second drum being sufficient to at least partially insert the first drum and second drum, respectively, into the coating b
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: March 27, 2001
    Assignee: Xerox Corporation
    Inventor: Eugene A. Swain
  • Patent number: 6198889
    Abstract: A process including: providing an electrically powered imaging system including a flexible electrostatographic imaging member belt including at least one layer including a thermoplastic polymer matrix, an imaging surface and a back surface, and at least two rotatable belt support members, each support member having an arcuate contacting surface in contact with the back surface of the imaging belt; providing electrical power to the imaging system, the imaging system having operating modes including a copying mode and at least one non-copying mode; and cycling the belt at low speed around the belt support members after the imaging system has continuously been in the at least one non-copying mode for at least about 1.5 hours.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: March 6, 2001
    Assignee: Xerox Corporation
    Inventors: Robert C. U. Yu, Satchidanand Mishra
  • Patent number: 6157038
    Abstract: Apparatus and process for fabricating an electrostatographic imaging member assembly including providing a hollow electrostatographic drum having a first end and a second end, the first end having a surface selected from the group consisting of an uncoated surface, a surface coated with only a first component of a multiple component adhesive, a surface coated with only a second component for the multiple component adhesive, the second component containing a fluorescent tracer which fluoresces when irradiated with activating radiation, and a surface coated with a mixture of the first component and the second component containing the fluorescent tracer, directing activating radiation at the surface of the first end, detecting the amount of fluorescence emitted from the surface of the first end, and generating a signal which is substantially proportional to the intensity of fluorescence emitted from the surface of the first end, the signal ranging through at least three levels of strength, the first level repres
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: December 5, 2000
    Assignee: Xerox Corporation
    Inventors: Eugene A. Swain, John J. Darcy, III
  • Patent number: 5614260
    Abstract: A process is disclosed for applying to a surface of a support member at least one ribbon-like stream of a first coating composition side-by-side with at least one ribbon-like stream of a second coating composition comprising providing an extrusion die source for the ribbon-like stream of the first coating composition, providing a slide die source for the ribbon-like stream of the second coating composition, establishing relative motion between the surface of the support member and the source of the ribbon-like streams, simultaneously and continuously applying the ribbon-like streams to the surface of the support member whereby the ribbon-like streams extend in the direction of relative movement of the surface of the support member and the sources of the ribbon-like streams to form a continuous unitary layer having a boundary between the side-by-side ribbon-like streams on the surface of the support member and drying the continuous unitary layer to form a dried coating of the first coating composition side-by-
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: March 25, 1997
    Assignee: Xerox Corporation
    Inventor: John J. Darcy
  • Patent number: 5552005
    Abstract: A flexible imaging sheet and a method of constructing a flexible imaging sheet is disclosed. The method of constructing a flexible imaging sheet comprises a step of overlapping, a step of joining, and a step of shaping. In the step of overlapping, a first marginal end region and a second marginal end region of a sheet are overlapped to form an overlap region and a non-overlap region. In the step of joining, the first marginal end region and the second marginal end region of the sheet are joined to one another by a seam in the overlap region. In the step of shaping, the overlap region is shaped to form a generally planar surface co-planar with a surface of the non-overlap region. The flexible imaging sheet comprises a first marginal end region and a second marginal end region The first marginal end region and the second marginal end region are secured by a seam to one another in the overlap region.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: September 3, 1996
    Assignee: Xerox Corporation
    Inventors: Joseph Mammino, Satchidanand Mishra, Shyshung S. Hwang, Edward A. Domm
  • Patent number: 5273583
    Abstract: Apparatus for the continuous coating of charge transport solutions onto a substrate to form an electrophotographic imaging member, including a pump to a flow of a first highly doped charge transport solution and a pump to a flow of a second undoped or lowly doped charge transport solution at predetermined rates to a common junction at which the flows intermix into a common flow upon contacting each other; piping connecting the pumping means to the common junction; and mixing device associated with the junction for continuously mixing the common flow during its movement through the mixing device, the mixing device having a short spiral flow path of less than about 200 cm for the solutions sufficient to substantially complete mix the common flow during its movement through the mixing means.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: December 28, 1993
    Assignee: Xerox Corporation
    Inventors: Edouard E. Langlois, Kathryn T. Kehoe, Warren R. Smith, Mark Muscato, Barbara D. Ceglinski, Alan C. Kirchoff, Robert F. Dunham, Michael D. Stair
  • Patent number: 5215841
    Abstract: An electrophotographic imaging system utilizing a member comprising at least one photoconductive layer and an overcoating layer comprising a film forming continuous phase comprising charge transport molecules and charge injection enabling sites comprising finely divided fullerene particles, the insulating overcoating layer being substantially transparent to activating radiation to which the photoconductive layer is sensitive and substantially electrically insulating at low electrical fields.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: June 1, 1993
    Assignee: Xerox Corporation
    Inventors: Merlin E. Scharfe, Ronald F. Ziolo, Joseph Mammino, Donald S. Sypula
  • Patent number: 5167987
    Abstract: A process for fabricating an electrostatographic imaging member including providing a flexible substrate comprising a solid thermoplastic polymer, forming an imaging layer coating including a film forming polymer on the substrate, heating the coating and substrate, cooling the coating and substrate, and applying sufficient predetermined biaxial tensions to the substrate while the imaging layer coating and substrate are at a temperature greater than the glass transition temperature of the imaging layer coating to substantially compensate for all dimensional thermal contraction mismatches between the substrate and the imaging layer coating during cooling of the imaging layer coating and the substrate, removing application of the biaxial tension to the substrate, and cooling the substrate whereby the final hardened and cooled imaging layer coating and substrate are substantially free of internal stress and strain.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: December 1, 1992
    Assignee: Xerox Corporation
    Inventor: Robert C. U. Yu
  • Patent number: 5167984
    Abstract: A vacuum evaporation container including a resistively heatable cylindrical crucible having at least one open end and having an axially aligned slot and a hollow cylindrical insert concentrically located within the cylindrical crucible, the insert having a slot aligned with the slot of the crucible, closed ends and an electrical conductivity less than the electrical conductivity of the electrically conductive cylindrical crucible. This vacuum evaporation container is employed in a vacuum deposition process.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: December 1, 1992
    Assignee: Xerox Corporation
    Inventors: Andrew R. Melnyk, Michael G. Swales, Donald Teney
  • Patent number: 5153759
    Abstract: A light valve comprising a first transparent electrically insulating layer, a first transparent electrically conductive layer, an electro-optic imaging medium layer, a dielectric mirror, a light blocking layer comprising an organic dye or organic pigment, a photoconductor layer comprising selenium, a second transparent electrically conductive layer and a second transparent layer. This light valve may be utilized in systems which include an imaging light source and a read-out light source.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: October 6, 1992
    Assignee: Xerox Corporation
    Inventors: Werner E. Haas, Merlin E. Scharfe
  • Patent number: 5153618
    Abstract: An ionographic imaging member containing a conductive layer and a uniform and continuous dielectric imaging layer free of voids, the imaging layer having a dielectric constant of from about 1.5 to about 40 and a thickness of at least about 45 micrometers, the thickness divided by the dielectric constant having a value of from about 30 to about 60 micrometers. This member may be used in an ionographic imaging process.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: October 6, 1992
    Assignee: Xerox Corporation
    Inventors: John A. Frank, Joseph Mammino, Dennis A. Abramsohn, Donald S. Sypula, Jerome P. Chasko, William L. Gary, Deborah J. Nichol-Landry, Fred W. Schmidlin, Dasarao K. Murti, Brian E. Springett
  • Patent number: 5149612
    Abstract: Processes and apparatus for fabricating an electrophotographic imaging member in which a web coated with a charge generation layer is coated with a charge transport layer comprising a dopant, the improvement comprising detecting the change in dopant concentration required, determining the amount of highly doped charge transport composition and amount of undoped or lowly doped charge transport composition required to achieve the change in dopant concentration, feeding the determined amounts of highly doped charge transport composition and undoped or lowly doped charge transport composition into a mixing zone, rapidly mixing the amounts of highly doped charge transport composition and undoped or lowly doped charge transport composition to form a uniformly doped charge transport composition, and applying the uniformly doped charge transport composition to the charge generation layer.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: September 22, 1992
    Assignee: Xerox Corporation
    Inventors: Edouard E. Langlois, Kathryn T. Kehoe, Warren R. Smith, Mark Muscato, Barbara D. Ceglinski, Alan C. Kirchoff, Robert F. Dunham, Michael D. Stair
  • Patent number: 5114818
    Abstract: An electrostatographic imaging apparatus including an organic electrostatographic imaging member having at least one arcuate surface, a heat fuser roll spaced from and adjacent to the arcuate surface, and a thin heat shield having at least one, heat reflective metallic surface interposed between the heat fuser roll and the adjacent arcuate surface, the metallic surface of the shield being concentric to and facing the fuser roll. This apparatus may be used in an electrostatographic imaging process which includes cycling the organic electrostatographic imaging member, while maintaining the heated fuser roll spaced from and adjacent to the arcuate surface and while the thin heat shield having at least one, heat reflective metallic surface is interposed between the heat fuser roll and the adjacent arcuate surface.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: May 19, 1992
    Assignee: Xerox Corporation
    Inventor: Robert C. U. Yu
  • Patent number: 5073434
    Abstract: An ionographic imaging member containing a conductive layer and a uniform and continuous dielectric imaging layer free of voids, the imaging layer having a dielectric constant of from about 1.5 to about 40 and a thickness of at least about 45 micrometers, the thickness divided by the dielectric constant having a value of from about 30 to about 60 micrometers. This member may be used in an ionographic imaging process.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: December 17, 1991
    Assignee: Xerox Corporation
    Inventors: John A. Frank, Joseph Mammino, Dennis A. Abramsohm, Donald S. Sypula, Jerome P. Chasko, William L. Gary, Deborah J. Nichol-Landry, Fred W. Schmidlin, Dasarao K. Murti, Brian E. Springett
  • Patent number: 5011939
    Abstract: A hydroxy arylamine compound is disclosed represented by the formula: ##STR1## wherein: m is 0 or 1,Z is selected from the group consisting of: ##STR2## n is 0 or 1, Ar is selected from the group consisting of: ##STR3## R is selected from the group consisting of --CH.sub.3, --CH.sub.2 H.sub.5, --C.sub.3 H.sub.7, and --C.sub.4 H.sub.9,Ar' is selected from the group consisting of: ##STR4## X is selected from the group consisting of: ##STR5## s is 0, 1 or 2, the dihydroxy arylamine compound being free of any direct conjugation between the --OH groups and the nearest nitrogen atom through one or more aromatic rings. The dihydroxy arylamine compound may be employed in an electrophotographic imaging member and the member may be used in an electrophotographic imaging process.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: April 30, 1991
    Assignee: Xerox Corporation
    Inventors: William W. Limburg, John F. Yanus, Dale S. Renfer, Richard L. Schank, Beng S. Ong
  • Patent number: 4988597
    Abstract: An electrophotographic imaging member including a supporting substrate, an electrically conductive layer including at least a partially crosslinked polymer having a backbone derived from an alkyl acrylamidoglycolate alkyl ether, a charge blocking layer including a polymer having a backbone also derived from an alkyl acrylamidoglycolate alkyl ether and at least one photoconductive layer. Preferably, the backbone derived from an alkyl acrylamidoglycolate alkyl ether is a copolymer of methyl acrylamidoglycolate methyl ether and a vinyl hydroxy ester or vinyl hydroxy amide. This imaging member may be prepared by a coating process and employed in an electrostatographic imaging process.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: January 29, 1991
    Assignee: Xerox Corporation
    Inventors: John W. Spiewak, Huoy-Jen Yuh, Constance J. Thornton, Dennis A. Abramsohn, Deborah Nichol-Landry, Joseph Mammino
  • Patent number: 4952293
    Abstract: A process for preparing free standing polymeric belts which includes the steps of providing at least one sleeve electrode coaxially spaced apart from and surrounding at least one other electrode in a bath comprising a dispersion of electrically charged, thermoplastic film forming polymer particles in an organic liquid dispersion medium, the polymer particles having a weight average molecular weight of at least about 35,000 and being substantially insoluble in the organic liquid medium at electrodeposition temperatures and sufficiently soluble in the organic liquid medium at elevated temperatures to coalesce and form a viscous sol coating, applying an electric field across the electrodes until a thick, substantially uniform deposit of polymer particles forms on the interior surface of the sleeve electrode, removing the sleeve electrode bearing the deposit of polymer particles and residual liquid dispersion medium clinging to the deposit of polymer particles from the bath, heating the deposit to initially solub
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: August 28, 1990
    Assignee: Xerox Corporation
    Inventors: Donald Sypula, Joseph Mammino