JPS55151646A - Magnetic toner - Google Patents
Magnetic tonerInfo
- Publication number
- JPS55151646A JPS55151646A JP5905079A JP5905079A JPS55151646A JP S55151646 A JPS55151646 A JP S55151646A JP 5905079 A JP5905079 A JP 5905079A JP 5905079 A JP5905079 A JP 5905079A JP S55151646 A JPS55151646 A JP S55151646A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- resin
- magnetic toner
- magnetic powder
- thermoplastic resin
- 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
Links
Abstract
PURPOSE: To obtain magnetic toner with superior transferability, dispersibility, image characteristics, etc. by blending iron oxide type magnetic powder covered with a layer of oxides having different oxidation states and a thermoplastic resin.
CONSTITUTION: Fe3O4 powder is slowly heated in air with stirring, maintained at about 200°C for an adequate time, and cooled to convert part of the Fe3O4 surface into γ-Fe2O3. The resulting powder is then mixed with a thermoplastic resin such as epoxy resin, styrene type resin or rosin resin and carbon black to obtain magnetic toner. The magnetic powder is preferably surface-treated by about 10W90vol% as the vol. ratio of Fe3O4/Fe2O3. The converted magnetic powder may be formed by suitably reducing Fe3O4.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5905079A JPS55151646A (en) | 1979-05-16 | 1979-05-16 | Magnetic toner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5905079A JPS55151646A (en) | 1979-05-16 | 1979-05-16 | Magnetic toner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55151646A true JPS55151646A (en) | 1980-11-26 |
Family
ID=13102098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5905079A Pending JPS55151646A (en) | 1979-05-16 | 1979-05-16 | Magnetic toner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55151646A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58136045A (en) * | 1982-02-08 | 1983-08-12 | Mita Ind Co Ltd | One-component electroscopic magnetic developer |
-
1979
- 1979-05-16 JP JP5905079A patent/JPS55151646A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58136045A (en) * | 1982-02-08 | 1983-08-12 | Mita Ind Co Ltd | One-component electroscopic magnetic developer |
JPH0445821B2 (en) * | 1982-02-08 | 1992-07-28 | Mita Industrial Co Ltd |
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