JPS56159653A - Developer for electrostatic latent image - Google Patents

Developer for electrostatic latent image

Info

Publication number
JPS56159653A
JPS56159653A JP6305080A JP6305080A JPS56159653A JP S56159653 A JPS56159653 A JP S56159653A JP 6305080 A JP6305080 A JP 6305080A JP 6305080 A JP6305080 A JP 6305080A JP S56159653 A JPS56159653 A JP S56159653A
Authority
JP
Japan
Prior art keywords
developer
toner
roller
particle size
average 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.)
Granted
Application number
JP6305080A
Other languages
Japanese (ja)
Other versions
JPS6346411B2 (en
Inventor
Toshiyasu Kawabata
Nobuo Mochizuki
Hachiro Tosaka
Toshio Kaneko
Masaki Takatsugi
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 JP6305080A priority Critical patent/JPS56159653A/en
Priority to DE19813114444 priority patent/DE3114444A1/en
Priority to GB8111187A priority patent/GB2074745A/en
Publication of JPS56159653A publication Critical patent/JPS56159653A/en
Publication of JPS6346411B2 publication Critical patent/JPS6346411B2/ja
Granted 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
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09733—Organic compounds
    • G03G9/09775—Organic compounds containing atoms other than carbon, hydrogen or oxygen
    • 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
    • G03G9/0821—Developers with toner particles characterised by physical parameters
    • G03G9/0823—Electric parameters

Landscapes

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

Abstract

PURPOSE:To facilitate the formation of an electrostatic induction circuit in development and prevent the damage of a roller, etc. by mixing a magnetic toner contg. fine magnetic powder and having high electric resistance with electrically conductive magnetic particles smaller than the toner in volume average particle size and having the shape of aggregated particles. CONSTITUTION:A magnetic toner (A) contg. fine magnetic powder and having high electric resistance and 5-20mum volume average particle size is mixed with electrically conductive magnetic particles (B) 1/5-4/5 time as large as the toner in volume average particle size and having the shape of aggregated particles. The mixing ratio of (A):(B) is (40-2):(60-98) by wt. Thus, a developer for developing an electrostatic latent image is obtd. The developer shows superior developing and transferring effects and facilitates the formation of an electrostatic induction circuit where the magnetic particles function in development. When the developer is fixed with a roller, the damage of the roller, etc. is prevented.
JP6305080A 1980-04-09 1980-05-13 Developer for electrostatic latent image Granted JPS56159653A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP6305080A JPS56159653A (en) 1980-05-13 1980-05-13 Developer for electrostatic latent image
DE19813114444 DE3114444A1 (en) 1980-04-09 1981-04-09 Developer and method for developing latent electrostatic images
GB8111187A GB2074745A (en) 1980-04-09 1981-04-09 Developer for developing latent electostatic images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6305080A JPS56159653A (en) 1980-05-13 1980-05-13 Developer for electrostatic latent image

Publications (2)

Publication Number Publication Date
JPS56159653A true JPS56159653A (en) 1981-12-09
JPS6346411B2 JPS6346411B2 (en) 1988-09-14

Family

ID=13218110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6305080A Granted JPS56159653A (en) 1980-04-09 1980-05-13 Developer for electrostatic latent image

Country Status (1)

Country Link
JP (1) JPS56159653A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57124356A (en) * 1981-01-26 1982-08-03 Mita Ind Co Ltd Binary magnetic developer
WO1984003955A1 (en) * 1983-04-01 1984-10-11 Hitachi Ltd Electrophotography method
JPH04296765A (en) * 1991-03-26 1992-10-21 Tomoegawa Paper Co Ltd Toner for developing electrostatic charge image
JPH04296764A (en) * 1991-03-26 1992-10-21 Tomoegawa Paper Co Ltd Toner for developing electrostatic charge image
JPH05297624A (en) * 1992-04-15 1993-11-12 Tomoegawa Paper Co Ltd Electrophotographic developer
US5866289A (en) * 1996-07-15 1999-02-02 Hitachi Metals, Ltd. Developer for electrostatic development and electrostatic developing method using same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57124356A (en) * 1981-01-26 1982-08-03 Mita Ind Co Ltd Binary magnetic developer
JPS6355697B2 (en) * 1981-01-26 1988-11-04 Mita Industrial Co Ltd
WO1984003955A1 (en) * 1983-04-01 1984-10-11 Hitachi Ltd Electrophotography method
JPS59182464A (en) * 1983-04-01 1984-10-17 Hitachi Ltd Method for electrophotography
JPH0231383B2 (en) * 1983-04-01 1990-07-12 Hitachi Seisakusho Kk
JPH04296765A (en) * 1991-03-26 1992-10-21 Tomoegawa Paper Co Ltd Toner for developing electrostatic charge image
JPH04296764A (en) * 1991-03-26 1992-10-21 Tomoegawa Paper Co Ltd Toner for developing electrostatic charge image
JPH05297624A (en) * 1992-04-15 1993-11-12 Tomoegawa Paper Co Ltd Electrophotographic developer
US5866289A (en) * 1996-07-15 1999-02-02 Hitachi Metals, Ltd. Developer for electrostatic development and electrostatic developing method using same

Also Published As

Publication number Publication date
JPS6346411B2 (en) 1988-09-14

Similar Documents

Publication Publication Date Title
GB1282017A (en) Photographic developer particles
GB1478382A (en) Pressure-fixable developing powder
JPS5692545A (en) Electrophotographic developing agent and developing method
JPS5359430A (en) Electrostatic latent image developer
JP2714590B2 (en) Carrier for electrostatic latent image development
JPS5662256A (en) Electrophotographic developer and developing method
GB1390872A (en) Carrier vehicle
JPS6413560A (en) Carrier for developing agent for electrophotography
JPS56159653A (en) Developer for electrostatic latent image
JPS5532073A (en) Electrophotographic developing method
JPS57190957A (en) Electrophotographic developer
JPS5528032A (en) Electrostatic transfer type magnetic toner and production thereof
JPS5383630A (en) Dry type deleloping method electro photography
JPS57114163A (en) Developing device
JPS56142540A (en) Developer for electrostatic latent image
JPS536040A (en) Manufacture of insulating magnetic toner for electrostatic development
JPS5333152A (en) Dry developer agent
GB1535972A (en) Dry developer particles for use in electrophotography and method for developing electrostatic images thereby
GB2021794A (en) Magnetic electrostatographic toner
JPS57202547A (en) Developer for electrostatic latent image
JPS57204570A (en) Developing device of electrophotographic copying machine
JPS5796353A (en) Two component system developer for magnetic brush development
JPS56161552A (en) Developer for electrostatic latent image
JPS5333633A (en) Dry-type developer
JPS6429864A (en) Carrier for developing electrostatic latent image