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    INK JET PRINTING PROCESS
    11.
    发明专利
    INK JET PRINTING PROCESS 未知

    公开(公告)号：CA2472726C

    公开(公告)日：2007-10-16

    申请号：CA2472726

    申请日：1999-08-05

    Applicant: XEROX CORP

    Inventor： LUCA DAVID J ,  MCGRANE KATHLEEN M ,  SMITH THOMAS W ,  LIMBURG WILLIAM W

    IPC: B41J2/21 ,  B41J2/04 ,  C09D11/02

    Abstract: A process which comprises: a) incorporating into an ink jet printing apparatus: a color forming composition comprising a liquid vehicle and at least one color forming agent, and a reacting composition comprising a liquid vehicle and at least one material capable of reacting with the color forming agent to cause a desired color to form; b) causing droplets of the color forming composition to be ejected in an imagewise pattern onto the substrate; and c) causing droplets of the reacting composition to be ejected in an imagewise pattern onto the substrate; wherein the process results in at least some portions of the substrate bearing images comprising both the color forming composition and the reacting composition, said portions forming a printed image, wherein at time T1, the color forming composition has formed an image on the substrate, at time T2, the reacting composition is deposited onto a first portion P1 of the image, and at time T3, the reacting composition is deposited onto a second portion P2 of the image, wherein time period T1 to T2 is less than time period T1 to T3, thereby resulting in second portion P2 having a different color intensity from first portion P1.

    INK JET PRINTING PROCESS
    13.
    发明专利
    INK JET PRINTING PROCESS 未知

    公开(公告)号：CA2279695A1

    公开(公告)日：2000-03-11

    申请号：CA2279695

    申请日：1999-08-05

    Applicant: XEROX CORP

    Inventor： SMITH THOMAS W ,  LIMBURG WILLIAM W ,  LUCA DAVID J ,  MCGRANE KATHLEEN M

    IPC: B41J2/01 ,  B41J2/14 ,  B41J2/155 ,  B41J2/175 ,  B41J2/21 ,  B41M5/00 ,  C09D11/00

    Abstract: A process comprising (a) incorporating into an ink jet printing apparatus (1) a developing composition comprising a liquid vehicle and a color developer, (2) an oxidizing composition comprising a liquid vehicle and an oxidizing agent; (3) a coloring composition comprising a liquid vehicle and a dye coupler; and (4) a fixing composition comprising a liquid vehicle and a fixative; (b) causing droplets of the developing composition to be ejected in an imagewise pattern onto the substrate; (c) causing droplets of the oxidizing composition to be ejected in an imagewise pattern onto the substrate; (d) causing droplets of the coloring composition to be ejected in an imagewise pattern onto the substrate; and (e) causing droplets of the fixing composition to be ejected in an imagewise pattern onto the substrate; wherein the process results in at least some portions of the substrate bearing images comprising all four of the developing composition, the oxidizing composition, the coloring composition, and the fixing composition, said portions forming a printed image. Specific embodiments of the present invention are directed to the realization of continuous tone and gray scale in images by (1) control of the time at which color forming reactions are quenched by controlling the time period between deposition of the color forming liquids and deposition of the fixing liquid; (2) control of the extent of color forming reactions by limitation of the quantity of one of the color forming liquids; or (3) control of pixel size by drop placement control over the overlap areas of drops of color forming liquids.

    15.
    发明专利
    未知

    公开(公告)号：DE3381992D1

    公开(公告)日：1990-12-20

    申请号：DE3381992

    申请日：1983-08-01

    Applicant: XEROX CORP

    Inventor： BADESHA SANTOKH S ,  SMITH THOMAS W

    IPC: C07D345/00 ,  C01B19/00 ,  C01B19/02 ,  C01B19/04 ,  C07C67/00 ,  C07C325/00 ,  C07C391/00 ,  C07C395/00 ,  C07D517/10 ,  C07F9/68 ,  C07F9/72 ,  C22C1/00

    Abstract: This invention is generally directed to a process for the preparation of chalcogenide alloys of the elements of Groups VA to VIA of the Periodic Table, in high purity, (99.999 percent) which comprises providing pure esters of the alloys desired, and subsequently simultaneously subjecting the esters to a coreduction reaction. The esters can be obtained by treating the corresponding oxides with an alcohol or diol. Examples of alloys produced in accordance with the process of the present invention include selenium arsenic, selenium sulfur selenium tellurium, selenium tellurium arsenic, selenium sulfur tellurium, and the like.

    PREPARATION OF COLLOIDAL IRON DISPERSIONS BY THE POLYMER-CATALYZED DECOMPOSITION OF IRON CARBONYL AND IRON ORGANOCARBONYL COMPOUNDS
    17.
    发明专利
    PREPARATION OF COLLOIDAL IRON DISPERSIONS BY THE POLYMER-CATALYZED DECOMPOSITION OF IRON CARBONYL AND IRON ORGANOCARBONYL COMPOUNDS 未知

    公开(公告)号：CA1152970A

    公开(公告)日：1983-08-30

    申请号：CA363609

    申请日：1980-10-30

    Applicant: XEROX CORP

    Inventor： SMITH THOMAS W

    IPC: B01J23/745 ,  B01J31/06 ,  B01J35/00 ,  B22F1/00 ,  C09D17/00 ,  G03G9/083 ,  G11B7/251 ,  B01J31/28

    Abstract: There is disclosed a method for the preparation of a homogeneous, physically stable colloidal elemental iron dispersion of colloidal iron particles having a size in the range of from about 10 Angstrom units to about 200 Angstrom units. The method comprises preparing a solution of an active polymer in an inert solvent, and incrementally adding thereto an iron precursor, at a temperature at which the iron precursor will become bound to the active polymer and thermally decompose to produce elemental iron particles, the process being carried out in an inert atmosphere. Such dispersions may be used per se as catalysts, or may be used for the preparation of supported colloidal iron catalysts. The dispersions may also be used for the preparation of ablative optical recording media, and for the preparation of magnetic xerographic developer materials.

    18.
    发明专利
    未知

    公开(公告)号：DE60100914D1

    公开(公告)日：2003-11-13

    申请号：DE60100914

    申请日：2001-03-28

    Applicant: XEROX CORP

    Inventor： CLARK SHAN C ,  SMITH THOMAS W

    IPC: B41J2/05 ,  B41J2/16 ,  C08G59/04 ,  B41J2/14

    Abstract: Disclosed is a thermal ink jet printhead (10) which comprises: (i) an upper substrate (24), and (ii) a lower substrate (14) in which one surface thereof has an array of heating elements (34) and addressing electrodes formed thereon, said lower substrate having an insulative layer (16) deposited on the surface thereof and over the heating elements and addressing electrodes (33) and patterned to form recesses therethrough to expose the heating elements and terminal ends of the addressing electrodes, said upper and lower substrates being bonded together to form a thermal ink jet printhead having droplet emitting nozzles (27) defined by the upper substrate, the insulative layer on the lower substrate, and the heating elements in the lower substrate, wherein at least one of said upper substrate and said insulative layer comprises a crosslinked polymer formed by crosslinking a precursor polymer which is a phenolic novolac resin having glycidyl ether functional groups on the monomer repeat units thereof.

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