[go: up one dir, main page]

JPS57202547A - Developer for electrostatic latent image - Google Patents

Developer for electrostatic latent image

Info

Publication number
JPS57202547A
JPS57202547A JP56087426A JP8742681A JPS57202547A JP S57202547 A JPS57202547 A JP S57202547A JP 56087426 A JP56087426 A JP 56087426A JP 8742681 A JP8742681 A JP 8742681A JP S57202547 A JPS57202547 A JP S57202547A
Authority
JP
Japan
Prior art keywords
grain sizes
toner
fine
magnetic powder
conductive
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
JP56087426A
Other languages
Japanese (ja)
Inventor
Toshiki Minamitani
Toshiyasu Kawabata
Hachiro Tosaka
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP56087426A priority Critical patent/JPS57202547A/en
Publication of JPS57202547A publication Critical patent/JPS57202547A/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

Landscapes

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

Abstract

PURPOSE:To improve developability and transferability by mixing an insulation characteristic microcapsul toner wherein core parts consisting of a soft solid material and fine magnetic powder are coated with an electric charge controllable material and conductive fine particles. CONSTITUTION:(a) An insulation characteristic magnetic microcapsule toner consisting of core parts consisting essentially of a solid soft material and fine magnetic powder and wall parts contg. an electric charge controllable material enclosing the cores and (b) conductive magnetic particles having volume average grain sizes smaller than the volume average grain sizes of said toner are mixed. Materials of about 1-15mu grain sizes that can be magnetized, for example, those consisting of metals such as Fe, Ni or the like or oxide or alloys of these metals are preferable as the conductive magnetic particles to be used. Materials of <=1mu grain sizes that can be magnetized are used for the fine magnetic powder. Oleic acid, wax, hardened fats and oils, low molecular polymers, etc. are enumerated as the soft solid material.
JP56087426A 1981-06-09 1981-06-09 Developer for electrostatic latent image Pending JPS57202547A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56087426A JPS57202547A (en) 1981-06-09 1981-06-09 Developer for electrostatic latent image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56087426A JPS57202547A (en) 1981-06-09 1981-06-09 Developer for electrostatic latent image

Publications (1)

Publication Number Publication Date
JPS57202547A true JPS57202547A (en) 1982-12-11

Family

ID=13914541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56087426A Pending JPS57202547A (en) 1981-06-09 1981-06-09 Developer for electrostatic latent image

Country Status (1)

Country Link
JP (1) JPS57202547A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59189354A (en) * 1983-04-12 1984-10-26 Canon Inc Encapsulated toner for developing electrostatic latent image
US5244768A (en) * 1991-02-15 1993-09-14 Fuji Xerox Co., Ltd. Manufacturing process for an electrophotographic toner
US5466556A (en) * 1993-05-14 1995-11-14 Brother Kogyo Kabushiki Kaisha Photosensitive microencapsulated toner
US5470683A (en) * 1993-07-28 1995-11-28 Brother Kogyo Kabushiki Kaisha Photosensitive microcapsule toner
US5484677A (en) * 1991-11-15 1996-01-16 Fuji Xerox Co., Ltd. Microcapsule and microcapsule toner
US5529877A (en) * 1994-03-09 1996-06-25 Fuji Xerox Co., Ltd. Microcapsule toner and processes for preparation of microcapsule and microcapsule toner

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59189354A (en) * 1983-04-12 1984-10-26 Canon Inc Encapsulated toner for developing electrostatic latent image
US5244768A (en) * 1991-02-15 1993-09-14 Fuji Xerox Co., Ltd. Manufacturing process for an electrophotographic toner
US5484677A (en) * 1991-11-15 1996-01-16 Fuji Xerox Co., Ltd. Microcapsule and microcapsule toner
US5466556A (en) * 1993-05-14 1995-11-14 Brother Kogyo Kabushiki Kaisha Photosensitive microencapsulated toner
US5470683A (en) * 1993-07-28 1995-11-28 Brother Kogyo Kabushiki Kaisha Photosensitive microcapsule toner
US5529877A (en) * 1994-03-09 1996-06-25 Fuji Xerox Co., Ltd. Microcapsule toner and processes for preparation of microcapsule and microcapsule toner

Similar Documents

Publication Publication Date Title
US2846333A (en) Method of developing electrostatic images
JPS5692545A (en) Electrophotographic developing agent and developing method
JPS57196264A (en) One component type developer
EP0774696A3 (en) Toner for developing electrostatic image, image forming method and process-cartridge
GB2139371A (en) Electrographic developer composition and method for using the same
DE3371725D1 (en) Magnetic carrier powder for two-component toner
JPS57202547A (en) Developer for electrostatic latent image
JPS5445135A (en) Dry type developer for electrography
JPS5526518A (en) Magnetic toner
JPS5528032A (en) Electrostatic transfer type magnetic toner and production thereof
JPS61151551A (en) Carrier for electrophotographic developer
JPS5532073A (en) Electrophotographic developing method
JPS5841506B2 (en) Developer for electrostatic latent images
JPS57177162A (en) Developer for electrophotography
JPS56144436A (en) Developer for electrostatic charge image and formation of image
JPS5745555A (en) Electric charge type magnetic toner
JPS5764252A (en) Charge type magnetic toner
JPS6450060A (en) Production of electrostatic charge image developing toner
JPS5776558A (en) Developing method
JPS5720743A (en) Photosensitive material
JP2000172017A (en) Method for producing ferrite carrier core for electrophotographic development
JPS6444455A (en) Magnetic toner
JPH0358110B2 (en)
JPS5745556A (en) Electric charge type magnetic toner
GB1299424A (en) High resistance carrier particles