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JPS5710150A - Dry type developer - Google Patents

Dry type developer

Info

Publication number
JPS5710150A
JPS5710150A JP8428780A JP8428780A JPS5710150A JP S5710150 A JPS5710150 A JP S5710150A JP 8428780 A JP8428780 A JP 8428780A JP 8428780 A JP8428780 A JP 8428780A JP S5710150 A JPS5710150 A JP S5710150A
Authority
JP
Japan
Prior art keywords
kinds
image
different
powders
charge
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
JP8428780A
Other languages
Japanese (ja)
Inventor
Masaki Suzumura
Toichi Matsumura
Makoto Kuroda
Miki Hayashi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8428780A priority Critical patent/JPS5710150A/en
Publication of JPS5710150A publication Critical patent/JPS5710150A/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
    • G03G9/083—Magnetic 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

Landscapes

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

Abstract

PURPOSE:To obtain a magnetic toner having enhanced developing and transferring performances, by using a combination of 2 kinds of insulating magnetic toners triboelectrified to polarities different from each other. CONSTITUTION:Two kinds of thermoplastic resins different in triboelectric series from each other are used, or a surface treating agent and a dye are added as a charge controller to prepare 2 kinds of insulating magnetic toner powders different from each other in charging characteristics. Sufficiently mixing these 2 kinds of toner powders charges them to polarities different from each other by friction between them. The toners reversely charge are fed to a sleeve type magnetic roller developing device to develop an electrostatic latent image. The insulating magnetic powder charge to a polarity reverse to that of the image is attached to the image, and the other powder charged reversely is also attached to part of the image in developing. A mixing ratio of these powders is 1:0.1-1:10, and a preferable range of particle diameter is 5-30mum for them.
JP8428780A 1980-06-20 1980-06-20 Dry type developer Pending JPS5710150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8428780A JPS5710150A (en) 1980-06-20 1980-06-20 Dry type developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8428780A JPS5710150A (en) 1980-06-20 1980-06-20 Dry type developer

Publications (1)

Publication Number Publication Date
JPS5710150A true JPS5710150A (en) 1982-01-19

Family

ID=13826246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8428780A Pending JPS5710150A (en) 1980-06-20 1980-06-20 Dry type developer

Country Status (1)

Country Link
JP (1) JPS5710150A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60459A (en) * 1983-06-17 1985-01-05 Tomoegawa Paper Co Ltd Developing method of electrostatic latent image
JPS6073546A (en) * 1983-09-28 1985-04-25 Matsushita Electric Ind Co Ltd Dry developer
JPS6173973A (en) * 1984-09-20 1986-04-16 Matsushita Electric Ind Co Ltd Method and device for development
US5436102A (en) * 1992-09-14 1995-07-25 Olympus Optical Co., Ltd. Magnetic developing agent and electrophotographic apparatus using said agent

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52145225A (en) * 1976-05-28 1977-12-03 Ricoh Co Ltd Dry type developing powder
JPS54119929A (en) * 1978-03-09 1979-09-18 Minolta Camera Co Ltd Developer and method of copying thereby
JPS54126039A (en) * 1978-02-17 1979-09-29 Toshiba Corp Magnetic toner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52145225A (en) * 1976-05-28 1977-12-03 Ricoh Co Ltd Dry type developing powder
JPS54126039A (en) * 1978-02-17 1979-09-29 Toshiba Corp Magnetic toner
JPS54119929A (en) * 1978-03-09 1979-09-18 Minolta Camera Co Ltd Developer and method of copying thereby

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60459A (en) * 1983-06-17 1985-01-05 Tomoegawa Paper Co Ltd Developing method of electrostatic latent image
JPS6073546A (en) * 1983-09-28 1985-04-25 Matsushita Electric Ind Co Ltd Dry developer
JPS6173973A (en) * 1984-09-20 1986-04-16 Matsushita Electric Ind Co Ltd Method and device for development
US5436102A (en) * 1992-09-14 1995-07-25 Olympus Optical Co., Ltd. Magnetic developing agent and electrophotographic apparatus using said agent

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