JPS5621303A - Magnet roll and manufacture thereof - Google Patents
Magnet roll and manufacture thereofInfo
- Publication number
- JPS5621303A JPS5621303A JP9616179A JP9616179A JPS5621303A JP S5621303 A JPS5621303 A JP S5621303A JP 9616179 A JP9616179 A JP 9616179A JP 9616179 A JP9616179 A JP 9616179A JP S5621303 A JPS5621303 A JP S5621303A
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- roll
- magnet members
- members
- altered
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
PURPOSE:To easily attain the desirable properties for an electrostatic developing roll, by securing a magnet of desired magnetic properties on a shaft and bonding and working the magnet. CONSTITUTION:A mixture of thermoplastic resin with ferrite magnet powder is injected and molded under magnetic field to manufcture four plastic magnet members 4 which has a sectorial cross section and contains uniform grains. The magnet members are secured on the shaft 1. The four sectorial platric magnet members 4 are bonded and hardened. The hardened magnet members are finished to prescribed dimensions by machining. The magnet members are magnetized together by a pulse- like magnetic field to manufacture the four-pole magnet roll. According to this method, the yield and work efficiency are enhanced. The magentic flux density of the surface of the magnet roll can be altered by changing the combination of the degrees of orientation of the powder in the plastic magnet members. The surface density of the roll can be also altered to a desired ratio.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9616179A JPS5621303A (en) | 1979-07-30 | 1979-07-30 | Magnet roll and manufacture thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9616179A JPS5621303A (en) | 1979-07-30 | 1979-07-30 | Magnet roll and manufacture thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5621303A true JPS5621303A (en) | 1981-02-27 |
Family
ID=14157617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9616179A Pending JPS5621303A (en) | 1979-07-30 | 1979-07-30 | Magnet roll and manufacture thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5621303A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5971067A (en) * | 1982-10-15 | 1984-04-21 | Sumitomo Special Metals Co Ltd | Permanent magnet roll |
JPS63110609A (en) * | 1986-10-28 | 1988-05-16 | Kanegafuchi Chem Ind Co Ltd | Magnet roll |
JPS63133816A (en) * | 1986-11-20 | 1988-06-06 | 鐘淵化学工業株式会社 | Magnet roll and manufacture of the same |
-
1979
- 1979-07-30 JP JP9616179A patent/JPS5621303A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5971067A (en) * | 1982-10-15 | 1984-04-21 | Sumitomo Special Metals Co Ltd | Permanent magnet roll |
JPS63110609A (en) * | 1986-10-28 | 1988-05-16 | Kanegafuchi Chem Ind Co Ltd | Magnet roll |
JPS63133816A (en) * | 1986-11-20 | 1988-06-06 | 鐘淵化学工業株式会社 | Magnet roll and manufacture of the same |
JPH0682579B2 (en) * | 1986-11-20 | 1994-10-19 | 鐘淵化学工業株式会社 | Magnetoroll and manufacturing method thereof |
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