JPS6433562A - Electrostatic latent image developer - Google Patents

Electrostatic latent image developer

Info

Publication number
JPS6433562A
JPS6433562A JP62189832A JP18983287A JPS6433562A JP S6433562 A JPS6433562 A JP S6433562A JP 62189832 A JP62189832 A JP 62189832A JP 18983287 A JP18983287 A JP 18983287A JP S6433562 A JPS6433562 A JP S6433562A
Authority
JP
Japan
Prior art keywords
fluoroalkyl
meth
developer
triboelectric charge
contg
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.)
Granted
Application number
JP62189832A
Other languages
Japanese (ja)
Other versions
JPH083668B2 (en
Inventor
Masanori Kouno
Kenji Tsujita
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP62189832A priority Critical patent/JPH083668B2/en
Priority to DE3825954A priority patent/DE3825954C2/en
Publication of JPS6433562A publication Critical patent/JPS6433562A/en
Priority to US07/485,844 priority patent/US4965159A/en
Publication of JPH083668B2 publication Critical patent/JPH083668B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
    • G03G9/1132—Macromolecular components of coatings
    • G03G9/1133—Macromolecular components of coatings obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • G03G9/1134—Macromolecular components of coatings obtained by reactions only involving carbon-to-carbon unsaturated bonds containing fluorine atoms
    • 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
    • G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
    • G03G9/1131—Coating methods; Structure of coatings
    • 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
    • G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
    • G03G9/1132—Macromolecular components of coatings
    • G03G9/1133—Macromolecular components of coatings obtained by reactions only involving carbon-to-carbon unsaturated bonds

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To maintain the performance of a developer over a long period by using a carrier having a triboelectric charge controlling layer contg. a specified amt. or more of fluoroalkyl (meth)acrylate repeating units and toner particles contg. polyester-based resin. CONSTITUTION:A carrier obtd. by successively coating a core material with an intermediate layer and a triboelectric charge controlling layer contg. a fluoroalkyl (meth)acrylate-based polymer is mixed with toner particles contg. polyester-based resin to obtain an electrostatic latent image developer. The triboelectric charge controlling layer contains >50wt.% fluoroalkyl (meth) acrylate repeating units. Since the content of fluoroalkyl (meth)acrylate repeating units is >50wt.%, the amt. of initial triboelectric charge of the developer can be regulated to 10-40muc/g and is hardly reduced even by repeated use. Accordingly, clear visible images can be continuously obtd. from the beginning of use of the developer and fogging is hardly caused.
JP62189832A 1987-07-29 1987-07-29 Electrostatic latent image developer Expired - Lifetime JPH083668B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP62189832A JPH083668B2 (en) 1987-07-29 1987-07-29 Electrostatic latent image developer
DE3825954A DE3825954C2 (en) 1987-07-29 1988-07-29 Carrier particles for use in an electrophotographic developer
US07/485,844 US4965159A (en) 1987-07-29 1990-02-20 Carrier for developing electrostatic image, and developer for developing electrostatic latent image containing same carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62189832A JPH083668B2 (en) 1987-07-29 1987-07-29 Electrostatic latent image developer

Publications (2)

Publication Number Publication Date
JPS6433562A true JPS6433562A (en) 1989-02-03
JPH083668B2 JPH083668B2 (en) 1996-01-17

Family

ID=16247957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62189832A Expired - Lifetime JPH083668B2 (en) 1987-07-29 1987-07-29 Electrostatic latent image developer

Country Status (1)

Country Link
JP (1) JPH083668B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61110160A (en) * 1984-11-05 1986-05-28 Fuji Xerox Co Ltd Carrier for electrophotography
JPS61120170A (en) * 1984-11-16 1986-06-07 Konishiroku Photo Ind Co Ltd Electrostatic image developing carrier
JPS6239880A (en) * 1985-08-16 1987-02-20 Fuji Xerox Co Ltd Electrophotographic carrier

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61110160A (en) * 1984-11-05 1986-05-28 Fuji Xerox Co Ltd Carrier for electrophotography
JPS61120170A (en) * 1984-11-16 1986-06-07 Konishiroku Photo Ind Co Ltd Electrostatic image developing carrier
JPS6239880A (en) * 1985-08-16 1987-02-20 Fuji Xerox Co Ltd Electrophotographic carrier

Also Published As

Publication number Publication date
JPH083668B2 (en) 1996-01-17

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Legal Events

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