JPS56122043A - Covered carrier - Google Patents
Covered carrierInfo
- Publication number
- JPS56122043A JPS56122043A JP2498280A JP2498280A JPS56122043A JP S56122043 A JPS56122043 A JP S56122043A JP 2498280 A JP2498280 A JP 2498280A JP 2498280 A JP2498280 A JP 2498280A JP S56122043 A JPS56122043 A JP S56122043A
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- styrene
- picture
- butadiene copolymer
- covered
- 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
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
- G03G9/10—Developers with toner particles characterised by carrier particles
- G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
- G03G9/1132—Macromolecular components of coatings
- G03G9/1133—Macromolecular components of coatings obtained by reactions only involving carbon-to-carbon unsaturated bonds
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
PURPOSE:To avoid a picture fog, by covering the surface of a carrier with the styrene-butadiene copolymer. CONSTITUTION:A carrier such as the iron oxide powder having the grain size of 10-100mu is is soaked into a solution in which the styrene-butadiene copolymer containing the 100,000-350,000mol.wt. plus the 40-95mol% styrene content is dispersed, and then dried at 50 deg.-70 deg.C. Then the carrier is covered with the above- mentioned copolymer of 0.3-5.0wt%. A developer using such carrier is applied to perform a copy of a number of sheets. In such way, a toner fogging is avoided at the nonpicture part with no reduction given to the concentration of the picture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2498280A JPS56122043A (en) | 1980-02-29 | 1980-02-29 | Covered carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2498280A JPS56122043A (en) | 1980-02-29 | 1980-02-29 | Covered carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56122043A true JPS56122043A (en) | 1981-09-25 |
Family
ID=12153181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2498280A Pending JPS56122043A (en) | 1980-02-29 | 1980-02-29 | Covered carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56122043A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0205123A2 (en) * | 1985-06-10 | 1986-12-17 | Kanto Denka Kogyo Co., Ltd. | Carrier for use in electrophotographic developers |
| JPH0497305U (en) * | 1992-01-24 | 1992-08-24 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5283231A (en) * | 1975-12-30 | 1977-07-12 | Fujitsu Ltd | Powder development carrier |
| JPS5526501A (en) * | 1978-08-01 | 1980-02-26 | Fujitsu Ltd | Carrier for powder developing |
-
1980
- 1980-02-29 JP JP2498280A patent/JPS56122043A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5283231A (en) * | 1975-12-30 | 1977-07-12 | Fujitsu Ltd | Powder development carrier |
| JPS5526501A (en) * | 1978-08-01 | 1980-02-26 | Fujitsu Ltd | Carrier for powder developing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0205123A2 (en) * | 1985-06-10 | 1986-12-17 | Kanto Denka Kogyo Co., Ltd. | Carrier for use in electrophotographic developers |
| JPH0497305U (en) * | 1992-01-24 | 1992-08-24 |
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