公开(公告)号：DE69122156T2

公开(公告)日：1997-01-30

申请号：DE69122156

申请日：1991-03-19

Applicant: XEROX CORP

Inventor： BERKES JOHN S ,  BONSIGNORE FRANK J ,  MAMMINO JOSEPH ,  ABRAMSOHN DENNIS A ,  SYPULA DONALD S

IPC: G03G7/00 ,  G03G15/16

公开(公告)号：DE69025872T2

公开(公告)日：1996-10-02

申请号：DE69025872

申请日：1990-12-12

Applicant: XEROX CORP

Inventor： MAMMINO JOSEPH ,  ZIOLO RONALD F ,  SYPULA DONALD S

IPC: G03G5/047 ,  G03G5/087 ,  G03G5/147

公开(公告)号：DE69015141T2

公开(公告)日：1995-07-27

申请号：DE69015141

申请日：1990-12-21

Applicant: XEROX CORP

Inventor： ABRAMSOHN DENNIS A ,  NICHOL-LANDRY DEBORAH ,  SYPULA DONALD S ,  SCHMIDLIN FRED W ,  CHASKO JEROME P ,  FRANK JOHN A ,  MAMMINO JOSEPH ,  GARY WILLIAM L ,  SPRINGETT BRIAN E ,  MURTI KRISHNA D

IPC: B41J2/415 ,  G03G5/02 ,  G03G15/05 ,  G03G15/22 ,  G03G15/32

Abstract: An ionographic imaging member containing a conductive layer (67) and a uniform and continuous dielectric imaging layer (66) 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.

公开(公告)号：GB2246722B

公开(公告)日：1994-01-12

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 ,  G03G5/00

Abstract: An ionographic imaging member has a conductive layer overcoated by a charge accepting layer. Overcoating layers of acrylate, polycarbonate, polyester, polyurethane, acrylic homopolymer or copolymer and the like are provided. Blocking layers may be provided for preventing charge injection and reducing surface charge decay and bulk charge trapping. The charge accepting layer may be doped with a charge clocking material for preventing charge injection. The overcoating and blocking layers may be one and the same.

公开(公告)号：DE3786282D1

公开(公告)日：1993-07-29

申请号：DE3786282

申请日：1987-03-24

Applicant: XEROX CORP

Inventor： MCANENEY THOMAS BRIAN ,  LOUTFY RAFIK OMAR ,  MAMMINO JOSEPH ,  NICHOL-LANDRY DEBORAH J ,  SYPULA DONALD STANLEY

IPC: B05D1/06 ,  B05D7/24 ,  B29C41/00 ,  B29C41/08 ,  B29C41/22 ,  G03G5/04 ,  G03G5/043 ,  G03G5/05 ,  G03G5/10 ,  G03G5/14

Abstract: A process for the fabrication of seamless substrates which comprises: providing a substrate (9) with a release coating composition thereover; depositing a polymer thereon by electrostatic powder spraying; melting the polymer, and permitting the melt to cool. Thereafter, layered photoconductive imaging members can be prepared by the application, for example, of a ground plane, a photogenerating layer, and a charge-transport layer.

公开(公告)号：GB2206846A

公开(公告)日：1989-01-18

申请号：GB8814791

申请日：1988-06-22

Applicant: XEROX CORP

Inventor： GOORAY ARTHUR M ,  ABRAMSOHN DENNIS ALAN ,  BOROSTYAN STEPHEN M ,  MAMMINO JOSEPH

IPC: G03G21/10 ,  G03G15/00 ,  G03G15/16 ,  G03G21/00

公开(公告)号：AU534467B2

公开(公告)日：1984-02-02

申请号：AU5608580

申请日：1980-03-03

Applicant: XEROX CORP

Inventor： MAMMINO JOSEPH ,  JOHNSON TIMOTHY F ,  PEREZ STEVEN R ,  WALTERS DAVID W

IPC: G03G9/10 ,  G03G9/113 ,  G03G9/14

Abstract: A process of preparing coated carrier particles for electrostatographic developer coated carrier particles for use in the development of electrostatic latent images are provided by mixing carrier core materials with powdered thermoplastic resin particles having a size of between 0.1 micron and 30 microns, and comprising between 0.05 and 3 percent by weight of the coated carrier particles. The carrier core materials are mixed with the resin particles until the resin particles mechanically and/or electrostatically adhere to the core materials and the mixture is heated to a temperature of between 160 DEG C and 345 DEG C for between 120 minutes and 20 minutes so that the resin particles melt and fuse to the carrier core materials. The coated carrier particles are cooled, classified to the desired particle size, and mixed with finely-divided toner particles to form a developer mixture. The process is especially advantageous for coating carrier particles with resin materials having poor solubility characteristics.

公开(公告)号：DE3064081D1

公开(公告)日：1983-08-18

申请号：DE3064081

申请日：1980-03-05

Applicant: XEROX CORP

Inventor： JOHNSON TIMOTHY F ,  MAMMINO JOSEPH ,  PEREZ STEVEN R ,  WALTERS DAVID W

IPC: G03G9/10 ,  G03G9/113 ,  G03G9/00

Abstract: A process of preparing coated carrier particles for electrostatographic developer coated carrier particles for use in the development of electrostatic latent images are provided by mixing carrier core materials with powdered thermoplastic resin particles having a size of between 0.1 micron and 30 microns, and comprising between 0.05 and 3 percent by weight of the coated carrier particles. The carrier core materials are mixed with the resin particles until the resin particles mechanically and/or electrostatically adhere to the core materials and the mixture is heated to a temperature of between 160 DEG C and 345 DEG C for between 120 minutes and 20 minutes so that the resin particles melt and fuse to the carrier core materials. The coated carrier particles are cooled, classified to the desired particle size, and mixed with finely-divided toner particles to form a developer mixture. The process is especially advantageous for coating carrier particles with resin materials having poor solubility characteristics.

公开(公告)号：CA1140784A

公开(公告)日：1983-02-08

申请号：CA349309

申请日：1980-04-08

Applicant: XEROX CORP

Inventor： MAMMINO JOSEPH ,  WALTERS DAVID W

IPC: G03G9/10 ,  G03G9/09 ,  G03G9/107 ,  G03G9/113

Abstract: Electrostatographic conductive coated carrier particles for use in the development of electrostatic latent images are provided by preparing a fluid mixture of insulating resinous material and an electrically conductive agent, converting the fluid mixture to a solid state, and comminuting the solid mixture to dry, powdered particles having a particle size of 1 to 100 microns. The powdered particles are mechanically or electrostatically applied to the surface of carrier cores having aparticle size of 30 to 1,000 microns. The resultant aggregation is heated to melt and fuse the powdered particles to the surface of the carrier cores. The conductive carrier particles are mixed with finely-divided toner particles to form developer mixtures.

公开(公告)号：CA1107557A

公开(公告)日：1981-08-25

申请号：CA277043

申请日：1977-04-26

Applicant: XEROX CORP

Inventor： WEIGL JOHN W ,  MAMMINO JOSEPH

IPC: G03G5/14 ,  G03G5/16 ,  G03G19/00

Abstract: A magnetographic imaging member is provided which includes a photoconductive layer sandwiched between a transparent conductive substrate and an overcoating of magnetic particles dispersed in a dielectric material. A magnetic latent image is formed in the member by first producing an electrostatic latent image on the premagnetized dielectric coating and developing it with a thermal radiation reflective toner. The surface is then subjected to thermal radiation which demagnetizes the pigment in the overcoating by raising it to a temperature above its Curie point except in the areas where the developed electrostatic image reflects the heat. The latent magnetic image can be repetitively developed with magnetic toner.