JPS5454640A - Production of magnetic toner - Google Patents
Production of magnetic tonerInfo
- Publication number
- JPS5454640A JPS5454640A JP12180177A JP12180177A JPS5454640A JP S5454640 A JPS5454640 A JP S5454640A JP 12180177 A JP12180177 A JP 12180177A JP 12180177 A JP12180177 A JP 12180177A JP S5454640 A JPS5454640 A JP S5454640A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- magnetic toner
- under stirring
- grain sizes
- 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.)
- Granted
Links
Abstract
PURPOSE: to readily produce spherical insulation type magnetic toner comprising evenly dispersing fine magnetic material in resin by allowing the magnetic material and vehicle resin to coprecipitate and deposit under stirring.
CONSTITUTION: Resin, scuh as polyvinly pyridine, which is soluble in acidic aqueous solutions and depostis in alkalinity is dissolved in an aqueous solution of magnetic metal salt such as FeSO4 and Fe2(SO4)2. Next, this solution is heated and is added and mixed with an aqueous NaOH solution under stirring while air is being blown to be controlled to 9 to 12 to pH, then the gelled matter of the fine powder Fe3O4 and resin is formed. This gelled matter is filtered out and is further washed with water, whereby the spherical magnetic toner is obtained. Thereby, controlling of grain sizes is readily accomplished, grain sizes are made uniform and there is virtually no need for classification
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52121801A JPS6028347B2 (en) | 1977-10-11 | 1977-10-11 | Method for manufacturing magnetic toner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52121801A JPS6028347B2 (en) | 1977-10-11 | 1977-10-11 | Method for manufacturing magnetic toner |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5454640A true JPS5454640A (en) | 1979-05-01 |
JPS6028347B2 JPS6028347B2 (en) | 1985-07-04 |
Family
ID=14820251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52121801A Expired JPS6028347B2 (en) | 1977-10-11 | 1977-10-11 | Method for manufacturing magnetic toner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6028347B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4495267A (en) * | 1982-03-26 | 1985-01-22 | Mita Industrial Co., Ltd. | Magnetic toner having improved humidity dependency |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6082744A (en) * | 1983-10-13 | 1985-05-10 | Matsushita Electric Ind Co Ltd | Hot water supplier |
-
1977
- 1977-10-11 JP JP52121801A patent/JPS6028347B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4495267A (en) * | 1982-03-26 | 1985-01-22 | Mita Industrial Co., Ltd. | Magnetic toner having improved humidity dependency |
Also Published As
Publication number | Publication date |
---|---|
JPS6028347B2 (en) | 1985-07-04 |
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