中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

167 records (took 0.023 seconds)

    101.
    发明专利
    未知

    公开(公告)号：DE69023322T2

    公开(公告)日：1996-06-13

    申请号：DE69023322

    申请日：1990-12-21

    Applicant: XEROX CORP

    Inventor： SPIEWAK JOHN W ,  NICHOL-LANDRY DEBORAH ,  YUH HUOY-JEN ,  MAMMINO JOSEPH ,  THORNTON CONSTANCE J ,  ABRAMSOHN DENNIS A

    IPC: G03G5/00 ,  G03G5/02 ,  G03G5/05 ,  G03G5/10 ,  G03G5/14

    Abstract: An electrophotographic imaging member including a supporting substrate, an electrically conductive layer including at least a partially cross-linked 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.

    102.
    发明专利
    未知

    公开(公告)号：DE69023322D1

    公开(公告)日：1995-12-07

    申请号：DE69023322

    申请日：1990-12-21

    Applicant: XEROX CORP

    Inventor： SPIEWAK JOHN W ,  NICHOL-LANDRY DEBORAH ,  YUH HUOY-JEN ,  MAMMINO JOSEPH ,  THORNTON CONSTANCE J ,  ABRAMSOHN DENNIS A

    IPC: G03G5/00 ,  G03G5/02 ,  G03G5/05 ,  G03G5/10 ,  G03G5/14

    Abstract: An electrophotographic imaging member including a supporting substrate, an electrically conductive layer including at least a partially cross-linked 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.

    POLYMER ELECTRODEPOSITION PROCESS
    105.
    发明专利
    POLYMER ELECTRODEPOSITION PROCESS 未知

    公开(公告)号：GB2239461B

    公开(公告)日：1993-08-25

    申请号：GB9027841

    申请日：1990-12-21

    Applicant: XEROX CORP

    Inventor： SYPULA DONALD S ,  MAMMINO JOSEPH

    IPC: C08J7/04 ,  B29C67/02 ,  B29L29/00 ,  C08J5/18 ,  C25D1/18 ,  C25D13/00

    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 solubilize the polymer particles in the residual organic liquid dispersion medium to form a coalesced, continuous viscous sol coating of the solubilized polymer particles, continuing the heating to evaporate the residual organic liquid dispersion medium and form a continuous, solidified, cylindrical, dry polymer film, and removing the dry polymer film from the interior surface of the sleeve electrode. This dry polymer film may subsequently be coated with various layers.

    ELECTROPHOTOGRAPHIC IMAGING MEMBER
    106.
    发明专利
    ELECTROPHOTOGRAPHIC IMAGING MEMBER 未知

    公开(公告)号：GB2262994A

    公开(公告)日：1993-07-07

    申请号：GB9300019

    申请日：1993-01-04

    Applicant: XEROX CORP

    Inventor： SPIEWAK JOHN W ,  YUH HUOY-JEN ,  MAMMINO JOSEPH ,  YU ROBERT C U ,  CHEN CINDY ,  CRANDALL RAYMOND K ,  GRAMMATICA STEVEN J

    IPC: G03G5/14

    Abstract: An electrophotographic imaging member including a supporting substrate, a charge blocking layer and at least one photoconductive layer wherein the blocking layer including an uncrosslinked copolymer derived from vinyl hydroxy ester or vinyl hydroxy amide repeat units some of these units chemically modified at a nucleophilic hydroxyl group by a monofunctional electrophile such as an acid anhydride, acid chloride, a sulphonyl chloride, or a halide, the copolymer having a number average molecular weight of at least about 10,000. The use of this copolymer improves adhesion between substrate and photoconductive layer.

    Ionographic imaging members
    108.
    发明专利
    Ionographic imaging members 未知

    公开(公告)号：GB2246722A

    公开(公告)日：1992-02-12

    申请号：GB9111561

    申请日：1991-05-30

    Applicant: XEROX CORP

    Inventor： MAMMINO JOSEPH ,  HAUSER OSCAR G ,  ABRAMSOHN DENNIS ALAN ,  NICHOL-LANDRY DEBORAH

    IPC: G03G5/02 ,  G03G5/14 ,  G03G5/147 ,  G03G15/05

    Abstract: An ionographic imaging member, comprising an electroconductive layer and a charge accepting (dielectric imaging) layer, wherein at least one layer of a charge blocking material and an overcoat material are present, the charge blocking material being present as either a layer or incorporated in the charge accepting layer and the overcoat material which may also function as the charge blocking material is in a separate layer which is electrically compatable with the sub-systems of an ionographic imaging machine.

    PROCESS FOR FABRICATING A BELT
    110.
    发明专利
    PROCESS FOR FABRICATING A BELT 未知

    公开(公告)号：CA1289328C

    公开(公告)日：1991-09-24

    申请号：CA531241

    申请日：1987-03-05

    Applicant: XEROX CORP

    Inventor： SYPULA DONALD S ,  SCHARFE MERLIN E ,  ABRAMSOHN DENNIS A ,  BRACH PAUL J ,  GRIFFITHS CLIFFORD H ,  NICHOL-LANDRY DEBORAH J ,  MELNYK ANDREW R ,  SPIEWAK JOHN W ,  MAMMINO JOSEPH ,  WILLIAMS EDWARD C ,  LEE LIENG-HUANG ,  TARNAWSKYJ CHRISTINE J

    IPC: B29C41/12 ,  B29C37/00 ,  B29C41/08 ,  B29C41/40 ,  B29C41/42 ,  B29C41/46 ,  B29D29/00 ,  B29L29/00

    Abstract: A process is disclosed for forming at least one thin substantially uniform fluid coating comprising polymeric film forming material on a cylindrical mandrel, solidifying the fluid coating to form a uniform solid coating and separating theuniform solid coating from the mandrel. The process may comprise forming at least one thin substantially uniform fluid coating comprising polymeric film forming material around a cylindrical mandrel, the mandrel having a larger mass or lowerthermal conductivity than the polymeric film forming material and a critical surface tension greater than the surface tension of the fluid coating, solidifying the fluid coating to form at least one thin substantially uniform solid coating comprising the polymeric film forming material around the cylindrical mandrel, heating both theuniform solid coating and the mandrel to a temperature at least above the apparent Tg of the solid coating to expand the coating and the mandrel while maintaining contact between the coating and the mandrel, cooling the coating to below the apparent Tg of the solid coating prior to substantial cooling of the mandrel, and cooling the mandrel whereby the mandrel contracts at a greater ratethan the polymeric coating until separation occurs between the mandrel and the coating, and removing the coating from the mandrel.

Patent Agency Ranking