公开(公告)号：DE69207839D1

公开(公告)日：1996-03-07

申请号：DE69207839

申请日：1992-07-17

Applicant: XEROX CORP

Inventor： CREATURA JOHN A ,  BUDNY THOMAS J

IPC: G03G9/113 ,  B01F13/08 ,  H01F7/02

Abstract: An apparatus for treating magnetisable particles (3), such as electrophotographic carrier particles, which comprises in operative relationship a rotatable container (1), a rotating means (9), a moving transporting means (5) in contact with the container means and the rotating means, and magnets (7) attached to the transporting means (5). In operation of the apparatus the particles are successively attracted towards the magnets, lifted, and released within the container.

公开(公告)号：DE69816139T2

公开(公告)日：2004-01-08

申请号：DE69816139

申请日：1998-01-16

Applicant: XEROX CORP

Inventor： SILENCE SCOTT M ,  CREATURA JOHN A ,  HSIEH BING R ,  ZIOLO RONALD F ,  ELLIS RICHARD W

IPC: G03G9/113

Abstract: A composition comprised of a core and thereover a mixture of a first and second polymer, and wherein said first polymer contains a conductive component, and said second polymer contains copper iodide.

公开(公告)号：DE69613252D1

公开(公告)日：2001-07-19

申请号：DE69613252

申请日：1996-01-15

Applicant: XEROX CORP

Inventor： CREATURA JOHN A ,  MCKNIGHT CATHERINE A ,  DUGGAN MICHAEL J ,  DOMBROSKI THOMAS C ,  KELLY BERNARD A ,  MAHABADI HADI K ,  CUNNINGHAM MICHAEL F

IPC: G03G9/107 ,  G03G9/113

公开(公告)号：CA2143889C

公开(公告)日：1999-03-23

申请号：CA2143889

申请日：1995-03-03

Applicant: XEROX CORP

Inventor： MAHABADI HADI K ,  WRIGHT DENISE Y ,  CUNNINGHAM MICHAEL F ,  CREATURA JOHN A

IPC: C08F2/44 ,  C08F292/00 ,  C08J3/03 ,  C08J3/12 ,  G03G9/113 ,  H01B1/20

Abstract: A process for the preparation of conductive polymeric particles with linear and crosslinked portions, which comprises mixing a monomer with at least one conductive filler, solvent, at least one polymerization initiator, and a chain transfer component; effecting solution polymerization by heating until from about 80 to about 100 weight percent of the monomer has been polymerized; drying the mixture by removing the solvent to yield an intimate blend of polymer with conductive filler; dispersing the aforementioned blend of polymer and conductive filler in at least one monomer with at least one polymerization initiator, a crosslinking agent and a chain transfer agent to form an organic phase; dispersing the resulting organic phase mixture in water containing a stabilizing component to obtain a suspension of particles with an average volume diameter of from about 0.05 to about 5 microns in water; polymerizing the resulting suspension by heating; and subsequently optionally washing and drying the polymeric product.

公开(公告)号：DE69500277D1

公开(公告)日：1997-06-12

申请号：DE69500277

申请日：1995-04-11

Applicant: XEROX CORP

Inventor： MAHABADI HADI K ,  WRIGHT DENISE Y ,  CUNNINGHAM MICHAEL F ,  CREATURA JOHN A

IPC: C08F2/44 ,  C08F292/00 ,  C08J3/03 ,  C08J3/12 ,  G03G9/113 ,  G03G9/10

Abstract: A process for the preparation of conductive polymeric particles with linear and crosslinked portions, which comprises mixing a monomer with at least one conductive filler, solvent, at least one polymerization initiator, and a chain transfer component; effecting solution polymerization by heating until from about 80 to about 100 weight percent of the monomer has been polymerized; drying the mixture by removing the solvent to yield an intimate blend of polymer with conductive filler; dispersing the aforementioned blend of polymer and conductive filler in at least one monomer with at least one polymerization initiator, a crosslinking agent and a chain transfer agent to form an organic phase; dispersing the resulting organic phase mixture in water containing a stabilizing component to obtain a suspension of particles with an average volume diameter of from about 0.05 to about 5 microns in water; polymerizing the resulting suspension by heating; and subsequently optionally washing and drying the polymeric product.

公开(公告)号：CA2164015C

公开(公告)日：2002-01-15

申请号：CA2164015

申请日：1995-11-29

Applicant: XEROX CORP

Inventor： CREATURA JOHN A ,  MCKNIGHT CATHERINE A ,  DUGGAN MICHAEL J ,  DOMBROSKI THOMAS C ,  KELLY BERNARD A ,  CUNNINGHAM MICHAEL F ,  MAHABADI HADI KHAN

IPC: G03G9/107 ,  G03G9/113

Abstract: A process for the preparation of conductive carrier particles which comprises mixing carrier core with a first polymer pair and a second polymer pair, heating the mixture, and cooling the mixture; and wherein the first and second polymer pair each contain an insulating polymer and a conductive polymer and wherein the carrier conductivity thereof is from about 10-6 to about 10-14 (ohm-cm)-1.

公开(公告)号：DE69613252T2

公开(公告)日：2001-09-27

申请号：DE69613252

申请日：1996-01-15

Applicant: XEROX CORP

Inventor： CREATURA JOHN A ,  MCKNIGHT CATHERINE A ,  DUGGAN MICHAEL J ,  DOMBROSKI THOMAS C ,  KELLY BERNARD A ,  MAHABADI HADI K ,  CUNNINGHAM MICHAEL F

IPC: G03G9/107 ,  G03G9/113

公开(公告)号：ES2158240T3

公开(公告)日：2001-09-01

申请号：ES96300277

申请日：1996-01-15

Applicant: XEROX CORP

Inventor： CREATURA JOHN A ,  MCKNIGHT CATHERINE A ,  DUGGAN MICHAEL J ,  DOMBROSKI THOMAS C ,  KELLY BERNARD A ,  MAHABADI HADI K

IPC: G03G9/107 ,  G03G9/113

公开(公告)号：CA2143889A1

公开(公告)日：1995-10-12

申请号：CA2143889

申请日：1995-03-03

Applicant: XEROX CORP

Inventor： MAHABADI HADI K ,  WRIGHT DENISE Y ,  CUNNINGHAM MICHAEL F ,  CREATURA JOHN A

IPC: C08F2/44 ,  C08F292/00 ,  C08J3/03 ,  C08J3/12 ,  G03G9/113 ,  C08F2/00 ,  H01B1/20

Abstract: A process for the preparation of conductive polymeric particles with linear and crosslinked portions, which comprises mixing a monomer with at least one conductive filler, solvent, at least one polymerization initiator, and a chain transfer component; effecting solution polymerization by heating until from about 80 to about 100 weight percent of the monomer has been polymerized; drying the mixture by removing the solvent to yield an intimate blend of polymer with conductive filler; dispersing the aforementioned blend of polymer and conductive filler in at least one monomer with at least one polymerization initiator, a crosslinking agent and a chain transfer agent to form an organic phase; dispersing the resulting organic phase mixture in water containing a stabilizing component to obtain a suspension of particles with an average volume diameter of from about 0.05 to about 5 microns in water; polymerizing the resulting suspension by heating; and subsequently optionally washing and drying the polymeric product.

公开(公告)号：CA1103079A

公开(公告)日：1981-06-16

申请号：CA272453

申请日：1977-02-23

Applicant: XEROX CORP

Inventor： CREATURA JOHN A ,  BURROWS LOUIS H JR

IPC: G03G9/10

Abstract: SEMI-CONDUCTIVE STEEL CARRIER PARTICLES Magnetically-responsive electrostatographic carrier particles having semi-conductive properties are prepared by firing steel shot particles in an oxygen deficient atmosphere as to provide the carrier particles with an oxide coating. More particularly, commercially available steel shot is placed in a furnace wherein the atmosphere has an oxygen content of less than about 18 percent oxygen and the steel shot is fired at a temperature of between about 900.degree.F and about 1600.degree.F for a period of time of between about 10 minutes and up to about 2 hours. When employed with finely-divided toner particles to develop electrostatic latent images in a magneticbrush development apparatus, the carriers have been found to provide developed images having lower background densities and higher resolution than prior known carrier materials.