JPS63206765A - Developer for electrophotography - Google Patents

Developer for electrophotography

Info

Publication number
JPS63206765A
JPS63206765A JP62039954A JP3995487A JPS63206765A JP S63206765 A JPS63206765 A JP S63206765A JP 62039954 A JP62039954 A JP 62039954A JP 3995487 A JP3995487 A JP 3995487A JP S63206765 A JPS63206765 A JP S63206765A
Authority
JP
Japan
Prior art keywords
toner
carrier
developer
grain size
magnetic
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
JP62039954A
Other languages
Japanese (ja)
Inventor
Hiroshi Saito
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.)
Kyocera Corp
Original Assignee
Kyocera Corp
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 Kyocera Corp filed Critical Kyocera Corp
Priority to JP62039954A priority Critical patent/JPS63206765A/en
Publication of JPS63206765A publication Critical patent/JPS63206765A/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
    • G03G9/0819—Developers with toner particles characterised by the dimensions of the 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
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/108—Ferrite carrier, e.g. magnetite

Abstract

PURPOSE:To sharpen the electric charge quantity distribution of a nonmagnetic toner and to prevent fogging and the contamination in a machine by using a developer consisting of a specific magnetic carrier, nonmagnetic toner and magnetic toner respectively having specific grain sizes. CONSTITUTION:This developer consists of the magnetic carrier 8 having 20-200mum grain size, the nonmagnetic toner 10 having 3-30mum grain size and the magnetic toner 9 having 5-50mum grain size. The developer is preferably formed by compounding 1-30pts.wt. toner 10 and 0.1-20pts.wt. toner 9 with 100pts.wt. carrier 8. This developer is agitated by an agitating means 5 of a developing device. While the toner 10 is imparted with the prescribed electric charge by the carrier 8, the toner 10 which is insufficiently charged is imparted with the sufficient charge of the same polarity by the toner 9 of the small grain size. The carrier 8 is held on a sleeve 4 by a magnet 3 and the toner 9 is also held on the sleeve 4 or the carrier 8 in a development region. The development is mostly executed by the toner 10.
JP62039954A 1987-02-23 1987-02-23 Developer for electrophotography Pending JPS63206765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62039954A JPS63206765A (en) 1987-02-23 1987-02-23 Developer for electrophotography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62039954A JPS63206765A (en) 1987-02-23 1987-02-23 Developer for electrophotography

Publications (1)

Publication Number Publication Date
JPS63206765A true JPS63206765A (en) 1988-08-26

Family

ID=12567348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62039954A Pending JPS63206765A (en) 1987-02-23 1987-02-23 Developer for electrophotography

Country Status (1)

Country Link
JP (1) JPS63206765A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0229758A (en) * 1988-07-20 1990-01-31 Tdk Corp Toner for developing electrostatic image and developing agent for electrostatic image
JPH04232963A (en) * 1990-12-27 1992-08-21 Tomoegawa Paper Co Ltd Dry developing agent

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0229758A (en) * 1988-07-20 1990-01-31 Tdk Corp Toner for developing electrostatic image and developing agent for electrostatic image
JPH04232963A (en) * 1990-12-27 1992-08-21 Tomoegawa Paper Co Ltd Dry developing agent

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