JPS5616145A - Magnetic toner - Google Patents
Magnetic tonerInfo
- 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
Links
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
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)
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)
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 |
-
1979
- 1979-07-18 JP JP9110979A patent/JPS5616145A/en active Granted
Patent Citations (2)
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)
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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