WO2001088617A3 - Electrographic methods using hard magnetic carrier particles - Google Patents

Electrographic methods using hard magnetic carrier particles Download PDF

Info

Publication number
WO2001088617A3
WO2001088617A3 PCT/US2001/015420 US0115420W WO0188617A3 WO 2001088617 A3 WO2001088617 A3 WO 2001088617A3 US 0115420 W US0115420 W US 0115420W WO 0188617 A3 WO0188617 A3 WO 0188617A3
Authority
WO
WIPO (PCT)
Prior art keywords
shell
methods
hard magnetic
carrier particles
magnetic carrier
Prior art date
Application number
PCT/US2001/015420
Other languages
French (fr)
Other versions
WO2001088617A2 (en
Inventor
Eric C Stelter
Robert D Fields
Thomas A Jadwin
Original Assignee
Heidelberg Digital Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heidelberg Digital Llc filed Critical Heidelberg Digital Llc
Priority to JP2001584950A priority Critical patent/JP2003533740A/en
Priority to AU2001261520A priority patent/AU2001261520A1/en
Priority to CA002375298A priority patent/CA2375298C/en
Publication of WO2001088617A2 publication Critical patent/WO2001088617A2/en
Publication of WO2001088617A3 publication Critical patent/WO2001088617A3/en

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
    • G03G15/0921—Details concerning the magnetic brush roller structure, e.g. magnet configuration
    • G03G15/0928—Details concerning the magnetic brush roller structure, e.g. magnet configuration relating to the shell, e.g. structure, composition
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09708—Inorganic compounds
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09708—Inorganic compounds
    • G03G9/09716—Inorganic compounds treated with organic compounds
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09708—Inorganic compounds
    • G03G9/09725—Silicon-oxides; Silicates
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09733—Organic compounds
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/108—Ferrite carrier, e.g. magnetite
    • G03G9/1085—Ferrite carrier, e.g. magnetite with non-ferrous metal oxide, e.g. MgO-Fe2O3

Abstract

Disclosed are methods and apparatus for electrographic development which utilize a rotating magnetic core, a toner shell disposed around the rotating magnetic core, and developer compositions disposed on the toner shell which include a hard magnetic material, such as a strontium ferrite. The shell in embodiments has an outer surface with a surface roughness Ra of less than 32 microinches. The methods and apparatus do not require special manufacturing steps to place surface roughness or irregularities on the shell, and, thus, can provide the same or better image quality with relatively less complex manufacturing steps and at reduced cost.
PCT/US2001/015420 2000-05-17 2001-05-11 Electrographic methods using hard magnetic carrier particles WO2001088617A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2001584950A JP2003533740A (en) 2000-05-17 2001-05-11 Electrographic method using hard magnetic carrier particles
AU2001261520A AU2001261520A1 (en) 2000-05-17 2001-05-11 Electrographic methods using hard magnetic carrier particles
CA002375298A CA2375298C (en) 2000-05-17 2001-05-11 Electrographic methods using hard magnetic carrier particles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20494200P 2000-05-17 2000-05-17
US60/204,942 2000-05-17

Publications (2)

Publication Number Publication Date
WO2001088617A2 WO2001088617A2 (en) 2001-11-22
WO2001088617A3 true WO2001088617A3 (en) 2009-06-11

Family

ID=22760109

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2001/015420 WO2001088617A2 (en) 2000-05-17 2001-05-11 Electrographic methods using hard magnetic carrier particles
PCT/US2001/015357 WO2001088620A1 (en) 2000-05-17 2001-05-14 Electrographic developer compositions and method for development of an electrostatic image

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/US2001/015357 WO2001088620A1 (en) 2000-05-17 2001-05-14 Electrographic developer compositions and method for development of an electrostatic image

Country Status (7)

Country Link
US (2) US20010046635A1 (en)
EP (2) EP1156373A1 (en)
JP (2) JP2003533740A (en)
AU (2) AU2001261520A1 (en)
CA (2) CA2375298C (en)
DE (1) DE60126015T2 (en)
WO (2) WO2001088617A2 (en)

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US6610451B2 (en) * 2000-12-26 2003-08-26 Heidelberger Druckmaschinen Ag Development systems for magnetic toners having reduced magnetic loadings
US6797448B2 (en) * 2001-05-14 2004-09-28 Eastman Kodak Company Electrophotographic toner and development process with improved image and fusing quality
JP2004252402A (en) * 2002-06-24 2004-09-09 Heidelberger Druckmas Ag Electrophotographic toner and development process using chemically prepared toner
US7157202B1 (en) 2003-09-23 2007-01-02 Eastman Kodak Company Method and apparatus for reducing densification of multiple component electrographic developer
US20050095522A1 (en) * 2003-10-30 2005-05-05 Eastman Kodak Company Control of charge-to-mass of toner using silica blends
US20050271961A1 (en) * 2004-03-05 2005-12-08 Jadwin Thomas A Substrate and near infrared absorbing toner
US20060150902A1 (en) * 2004-03-09 2006-07-13 Eastman Kodak Company Powder coating apparatus and method of powder coating using an electromagnetic brush
US7481884B2 (en) * 2004-03-09 2009-01-27 Eastman Kodak Company Powder coating apparatus and method of powder coating using an electromagnetic brush
US7426361B2 (en) * 2005-09-01 2008-09-16 Eastman Kodak Company Developer mixing apparatus having four ribbon blenders
CN104649282B (en) * 2006-06-09 2017-06-13 株式会社德山 Dry-process fine silica particle
US8435474B2 (en) 2006-09-15 2013-05-07 Cabot Corporation Surface-treated metal oxide particles
US8455165B2 (en) 2006-09-15 2013-06-04 Cabot Corporation Cyclic-treated metal oxide
US8202502B2 (en) 2006-09-15 2012-06-19 Cabot Corporation Method of preparing hydrophobic silica
US20080070146A1 (en) 2006-09-15 2008-03-20 Cabot Corporation Hydrophobic-treated metal oxide
US7885584B2 (en) * 2007-06-29 2011-02-08 Eastman Kodak Company Self-cleaning electrophotographic toning roller system
JP2012208473A (en) * 2011-03-11 2012-10-25 Ricoh Co Ltd Developing device, image forming apparatus, image forming method, and process cartridge
JP2013092748A (en) 2011-10-26 2013-05-16 Cabot Corp Toner additives comprising composite particles
JP6363202B2 (en) 2013-12-20 2018-07-25 キャボット コーポレイションＣａｂｏｔ Ｃｏｒｐｏｒａｔｉｏｎ Metal oxide-polymer composite particles for chemical mechanical planarization
JP6376688B2 (en) * 2014-07-24 2018-08-22 住友ゴム工業株式会社 Semi-conductive roller

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US6210551B1 (en) * 1995-08-01 2001-04-03 Australian Membrane And Biotechnology Research Institute Composite membrane sensor

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Also Published As

Publication number Publication date
AU2001261520A8 (en) 2009-07-30
US20010055723A1 (en) 2001-12-27
WO2001088617A2 (en) 2001-11-22
EP1156391B1 (en) 2007-01-17
DE60126015T2 (en) 2007-07-19
CA2375255A1 (en) 2001-11-22
JP2003533742A (en) 2003-11-11
EP1156373A1 (en) 2001-11-21
CA2375298A1 (en) 2001-11-22
US20010046635A1 (en) 2001-11-29
AU2001261520A1 (en) 2001-11-26
US6589703B2 (en) 2003-07-08
DE60126015D1 (en) 2007-03-08
EP1156391A1 (en) 2001-11-21
WO2001088620A1 (en) 2001-11-22
JP2003533740A (en) 2003-11-11
AU2001261492A1 (en) 2001-11-26
CA2375298C (en) 2005-07-12

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