JPS6418152A - Production of electrophotographic toner - Google Patents

Production of electrophotographic toner

Info

Publication number
JPS6418152A
JPS6418152A JP62172933A JP17293387A JPS6418152A JP S6418152 A JPS6418152 A JP S6418152A JP 62172933 A JP62172933 A JP 62172933A JP 17293387 A JP17293387 A JP 17293387A JP S6418152 A JPS6418152 A JP S6418152A
Authority
JP
Japan
Prior art keywords
particles
fine particles
sharp image
secondary base
base particle
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.)
Pending
Application number
JP62172933A
Other languages
Japanese (ja)
Inventor
Yuichi Moriya
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.)
Tomoegawa Co Ltd
Original Assignee
Tomoegawa Paper 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 Tomoegawa Paper Co Ltd filed Critical Tomoegawa Paper Co Ltd
Priority to JP62172933A priority Critical patent/JPS6418152A/en
Publication of JPS6418152A publication Critical patent/JPS6418152A/en
Pending 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
    • G03G9/0825—Developers with toner particles characterised by their structure; characterised by non-homogenuous distribution of components
    • 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
    • G03G9/0802—Preparation methods
    • G03G9/0808—Preparation methods by dry mixing the toner components in solid or softened state
    • 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
    • G03G9/0827—Developers with toner particles characterised by their shape, e.g. degree of sphericity
    • 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
    • G03G9/09—Colouring agents for toner particles
    • G03G9/0902—Inorganic compounds
    • G03G9/0904—Carbon black

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a sharp image by applying compression and friction forces between secondary base particles and fine particles composed mainly of an electric charge controller to partially embed the fine particles into the surface of each secondary base particle so as to give disclosed parts to the fine particles. CONSTITUTION:The electrophotographic toner capable of forming a sharp image superior in resolution is obtained by covering the surface of each spherical primary base particle 11 or amorphous one 12 with prescribed proportion of carbon black particles 21, applying strong compression and friction forces to the obtained mixture under conditions of not crushing both particles, and then fast attaching the fine particles 22 composed mainly of the charge controller to the surface of each secondary base particle 31, 32 obtained by embedding the carbon black particles 21 into the surface of primary particle 11, thus permitting a sharp image superior in resolution to be obtained.
JP62172933A 1987-07-13 1987-07-13 Production of electrophotographic toner Pending JPS6418152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62172933A JPS6418152A (en) 1987-07-13 1987-07-13 Production of electrophotographic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62172933A JPS6418152A (en) 1987-07-13 1987-07-13 Production of electrophotographic toner

Publications (1)

Publication Number Publication Date
JPS6418152A true JPS6418152A (en) 1989-01-20

Family

ID=15951042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62172933A Pending JPS6418152A (en) 1987-07-13 1987-07-13 Production of electrophotographic toner

Country Status (1)

Country Link
JP (1) JPS6418152A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1594013A3 (en) * 2004-05-07 2007-06-20 Samsung Electronics Co., Ltd. Negatively charged coated electrographic toner particles
EP1594012A3 (en) * 2004-05-07 2007-06-20 Samsung Electronics Co., Ltd. Positively charged coated electrographic toner particles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1594013A3 (en) * 2004-05-07 2007-06-20 Samsung Electronics Co., Ltd. Negatively charged coated electrographic toner particles
EP1594012A3 (en) * 2004-05-07 2007-06-20 Samsung Electronics Co., Ltd. Positively charged coated electrographic toner particles

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