EP1424606A3 - Electrophotographic positively charged toner and manufacturing method thereof - Google Patents

Electrophotographic positively charged toner and manufacturing method thereof Download PDF

Info

Publication number
EP1424606A3
EP1424606A3 EP03026952A EP03026952A EP1424606A3 EP 1424606 A3 EP1424606 A3 EP 1424606A3 EP 03026952 A EP03026952 A EP 03026952A EP 03026952 A EP03026952 A EP 03026952A EP 1424606 A3 EP1424606 A3 EP 1424606A3
Authority
EP
European Patent Office
Prior art keywords
toner
positively charged
control agent
charge control
charged toner
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP03026952A
Other languages
German (de)
French (fr)
Other versions
EP1424606A2 (en
Inventor
Manabu Sawada
Kei Yamaguchi
Shinichiro Nishimaki
Hiroshi Emori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Imaging Device Co Ltd
Original Assignee
Fuji Electric Imaging Device Co Ltd
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 Fuji Electric Imaging Device Co Ltd filed Critical Fuji Electric Imaging Device Co Ltd
Publication of EP1424606A2 publication Critical patent/EP1424606A2/en
Publication of EP1424606A3 publication Critical patent/EP1424606A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G03G9/087—Binders for toner particles
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
    • Y10T428/2956—Glass or silicic fiber or filament with metal coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2984—Microcapsule with fluid core [includes liposome]
    • Y10T428/2985—Solid-walled microcapsule from synthetic polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

[Problem] To provide an electrophotographic positively charged toner and a manufacturing method thereof, according to which even if after kneading, pulverization and classification the toner is made spherical by melting the surfaces of the particles in a hot air current, the charge control agent is not coated and hence the charging ability thereof is not reduced, and thus the toner has sufficient tribo-charging ability for good image formation, excellent transfer efficiency, and excellent charge build-up performance and excellent charge stability upon continuous printing.
[Means of Solution] In the case of an electrophotographic positively charged toner comprising a core toner that has a binder resin, a wax, a colorant and a charge control agent as principal component materials thereof and has been spherified through heat treatment, and at least fine silica particles as an external additive, the charge control agent is made to contain a resin having a quaternary ammonium salt group as a functional group and a nigrosine dye.
EP03026952A 2002-11-28 2003-11-25 Electrophotographic positively charged toner and manufacturing method thereof Withdrawn EP1424606A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2002345636 2002-11-28
JP2002345636 2002-11-28
JP2003350356A JP2004191934A (en) 2002-11-28 2003-10-09 Electrophotographic positively charged toner and manufacturing method thereof
JP2003350356 2003-10-09

Publications (2)

Publication Number Publication Date
EP1424606A2 EP1424606A2 (en) 2004-06-02
EP1424606A3 true EP1424606A3 (en) 2005-01-19

Family

ID=32301861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03026952A Withdrawn EP1424606A3 (en) 2002-11-28 2003-11-25 Electrophotographic positively charged toner and manufacturing method thereof

Country Status (4)

Country Link
US (1) US20050074608A1 (en)
EP (1) EP1424606A3 (en)
JP (1) JP2004191934A (en)
CN (1) CN1514310A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008096969A (en) * 2006-09-15 2008-04-24 Ricoh Co Ltd Toner, image forming apparatus and image forming method
US20090246675A1 (en) * 2008-02-01 2009-10-01 Canon Kabushiki Kaisha Two-component developer, replenishing developer, and image-forming method using the developers
JP5538301B2 (en) * 2011-05-12 2014-07-02 京セラドキュメントソリューションズ株式会社 Positively chargeable magnetic black one-component toner
CN103608731B (en) * 2011-06-13 2016-10-12 佳能株式会社 The Equipment for Heating Processing of powder particle and the production method of toner
JP6033049B2 (en) * 2011-12-15 2016-11-30 花王株式会社 Method for producing toner for developing electrostatic image
JP5696126B2 (en) * 2012-11-15 2015-04-08 京セラドキュメントソリューションズ株式会社 Two component developer
CN103869643B (en) * 2012-12-13 2016-09-28 周拯 The preparation method of chromatic ceramics carbon dust
KR20190040465A (en) * 2017-10-10 2019-04-18 도다 고교 가부시끼가이샤 Aniline black, and resin composition and dispersion using the aniline black

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212837A (en) * 1977-05-04 1980-07-15 Tokyo Shibaura Electric Co., Ltd. Method and apparatus for forming spherical particles of thermoplastic material
US4840863A (en) * 1986-04-17 1989-06-20 Fujikura Kasei Co., Ltd. Positively chargeable toner for use in dry electrophotography
US5759728A (en) * 1996-02-20 1998-06-02 Minolta Co. Ltd. Black toner for developing electrostatic latent images with carbon black dispersed in specific distribution

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5110977A (en) * 1990-02-14 1992-05-05 Eastman Kodak Company Ester-containing quaternary ammonium salts as adhesion improving toner charge agents
JPH04328758A (en) * 1991-04-30 1992-11-17 Mitsubishi Kasei Corp Developer for developing electrostatic charge image
US6383706B1 (en) * 2000-07-13 2002-05-07 Xerox Corporation Particulate smoothing process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4212837A (en) * 1977-05-04 1980-07-15 Tokyo Shibaura Electric Co., Ltd. Method and apparatus for forming spherical particles of thermoplastic material
US4840863A (en) * 1986-04-17 1989-06-20 Fujikura Kasei Co., Ltd. Positively chargeable toner for use in dry electrophotography
US5759728A (en) * 1996-02-20 1998-06-02 Minolta Co. Ltd. Black toner for developing electrostatic latent images with carbon black dispersed in specific distribution

Also Published As

Publication number Publication date
JP2004191934A (en) 2004-07-08
EP1424606A2 (en) 2004-06-02
CN1514310A (en) 2004-07-21
US20050074608A1 (en) 2005-04-07

Similar Documents

Publication Publication Date Title
JP3505993B2 (en) Chargeable powder for circuit formation and multilayer wiring board using the same
JP4076681B2 (en) Method for producing toner for developing electrostatic latent image
EP1128224A3 (en) Developer, image-forming method, and process cartridge
US8497055B2 (en) Electrostatic charge developing toner, electrostatic charge developing developer, and image forming apparatus
EP1426828A3 (en) Dry toner and process cartridge, image forming process and apparatus using the same
EP1286225A3 (en) Developing assembly, process cartridge and image-forming method
EP0241160B1 (en) Developing method
EP1207429A3 (en) Image forming method and apparatus
CN100394319C (en) Development apparatus, its unit and picture formation method thereof
EP1424606A3 (en) Electrophotographic positively charged toner and manufacturing method thereof
EP1220043A3 (en) Toner and image forming apparatus using the same
JP4136171B2 (en) Toner for electrophotography, method for producing the same, and image forming method
KR100942676B1 (en) Toner particle having excellent charging characteristics, long term credibility and transfering property, method for producing the same and toner containing said toner particle
JP3644208B2 (en) Electrostatic latent image developing toner, electrostatic latent image developer, and image forming method
CA1148787A (en) Process for preparing electrostatographic carrier particles by spray drying thereon a thixotropic coating of fumed silica particles
JP2008083617A (en) Developer and image forming method
KR101065197B1 (en) Toner composition having excellent durability and method for producing the same
JP2007072395A5 (en)
JP5879908B2 (en) Method for producing carrier for electrostatic charge image two-component developer
JP2009223153A5 (en)
JP4809068B2 (en) Coated carrier
JP2007322939A (en) Electrophotographic toner and method of manufacturing same
CN109507856A (en) A kind of environmental protection carbon dust and preparation method thereof
KR101125788B1 (en) Magnetic toner composition having superior long term image density
JP6497141B2 (en) Method for producing carrier for two-component development

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20050214

17Q First examination report despatched

Effective date: 20050613

AKX Designation fees paid

Designated state(s): DE GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20051025