JPS5616145A - Magnetic toner - Google Patents

Magnetic toner

Info

Publication number
JPS5616145A
JPS5616145A JP9110979A JP9110979A JPS5616145A JP S5616145 A JPS5616145 A JP S5616145A JP 9110979 A JP9110979 A JP 9110979A JP 9110979 A JP9110979 A JP 9110979A JP S5616145 A JPS5616145 A JP S5616145A
Authority
JP
Japan
Prior art keywords
toner
magnetic
mixed
resin
resistance
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
JP9110979A
Other languages
Japanese (ja)
Other versions
JPS6342778B2 (en
Inventor
Masumi Asanae
Keitaro Yamashita
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP9110979A priority Critical patent/JPS5616145A/en
Publication of JPS5616145A publication Critical patent/JPS5616145A/en
Publication of JPS6342778B2 publication Critical patent/JPS6342778B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE: To perform good development independently of types of photosensitive materials to make it possible to perform good transcription onto a plain paper, by mixing and using magnetic toners different in magnetic force and resistance.
CONSTITUTION: In respect to the magnetic toner where two or more kinds of magnetic toner different in magnetic force and electric resistance and including at least resin and magnetic powder are mixed, magnetic toner A of saturation magnetic flux density 200W1,200 gauss and electric resistance ≥1013Ω.cm for D.C. 4,000V/cm and magnetic toner B of saturation magnetic flux density 1,200W3,000 gauss and resistance ≤1013Ω for D.C. 4,000V/cm are mixed. The average particle size of toner B is set to the double or more of the average particle size of toner A, and 1W8pts.wt. toner A is mixed for 10pts.wt. toner B. Coercive force of toner A is set to ≤150 oersted, and coercive force of toner B is set to ≥150 oersted or more. Epoxy resin, acrylic resin, and so on are used as resin. Thus, a toner can be obtained where good transcription onto a plain paper is possible and a good-resolution picture can be obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP9110979A 1979-07-18 1979-07-18 Magnetic toner Granted JPS5616145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9110979A JPS5616145A (en) 1979-07-18 1979-07-18 Magnetic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9110979A JPS5616145A (en) 1979-07-18 1979-07-18 Magnetic toner

Publications (2)

Publication Number Publication Date
JPS5616145A true JPS5616145A (en) 1981-02-16
JPS6342778B2 JPS6342778B2 (en) 1988-08-25

Family

ID=14017349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9110979A Granted JPS5616145A (en) 1979-07-18 1979-07-18 Magnetic toner

Country Status (1)

Country Link
JP (1) JPS5616145A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5646249A (en) * 1979-09-25 1981-04-27 Toray Ind Inc Magnetic toner for electrostatic transfer type copier
JPS59204846A (en) * 1983-05-09 1984-11-20 Canon Inc magnetic toner
US4546060A (en) * 1982-11-08 1985-10-08 Eastman Kodak Company Two-component, dry electrographic developer compositions containing hard magnetic carrier particles and method for using the same
JPS6155656A (en) * 1984-08-25 1986-03-20 Kyocera Corp Magnetic developer
US4670368A (en) * 1985-02-06 1987-06-02 Ricoh Company, Ltd. Magnetic developer for developing latent electrostatic images
US4707512A (en) * 1984-07-16 1987-11-17 Mitsubishi Chemical Industries Limited Polyester resin composition
US5436102A (en) * 1992-09-14 1995-07-25 Olympus Optical Co., Ltd. Magnetic developing agent and electrophotographic apparatus using said agent

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5298530A (en) * 1976-02-16 1977-08-18 Hitachi Metals Ltd Magnetic toner
JPS53118054A (en) * 1977-03-09 1978-10-16 Hitachi Metals Ltd Magnetic toner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5298530A (en) * 1976-02-16 1977-08-18 Hitachi Metals Ltd Magnetic toner
JPS53118054A (en) * 1977-03-09 1978-10-16 Hitachi Metals Ltd Magnetic toner

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5646249A (en) * 1979-09-25 1981-04-27 Toray Ind Inc Magnetic toner for electrostatic transfer type copier
US4546060A (en) * 1982-11-08 1985-10-08 Eastman Kodak Company Two-component, dry electrographic developer compositions containing hard magnetic carrier particles and method for using the same
JPS59204846A (en) * 1983-05-09 1984-11-20 Canon Inc magnetic toner
US4707512A (en) * 1984-07-16 1987-11-17 Mitsubishi Chemical Industries Limited Polyester resin composition
JPS6155656A (en) * 1984-08-25 1986-03-20 Kyocera Corp Magnetic developer
US4670368A (en) * 1985-02-06 1987-06-02 Ricoh Company, Ltd. Magnetic developer for developing latent electrostatic images
US5436102A (en) * 1992-09-14 1995-07-25 Olympus Optical Co., Ltd. Magnetic developing agent and electrophotographic apparatus using said agent

Also Published As

Publication number Publication date
JPS6342778B2 (en) 1988-08-25

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