JPS5589940A - Drum for video tape recorder - Google Patents
Drum for video tape recorderInfo
- Publication number
- JPS5589940A JPS5589940A JP10770478A JP10770478A JPS5589940A JP S5589940 A JPS5589940 A JP S5589940A JP 10770478 A JP10770478 A JP 10770478A JP 10770478 A JP10770478 A JP 10770478A JP S5589940 A JPS5589940 A JP S5589940A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- drum
- inner ring
- injection molding
- synthetic 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.)
- Granted
Links
Landscapes
- Photoreceptors In Electrophotography (AREA)
Abstract
PURPOSE: To reduce the manufacturing cost, by manufacturing the materials suitable to the rotary drum and guide drums up and down with die forging or synthetic resin injection molding suitable for mass production.
CONSTITUTION: The external circumference of the drum 1 corresponding to the tape contact surface is molded in advance as the external ring 2 having desired outer diameter, thickness and width with high tension aluminum extension material, and rollet machining 6 is made at the inner circumference. Next, after inserting the outer ring 2 to the metal mold for die casting molten forging aluminum alloy for die casting is put in to unifiedly forge the inner ring 5 to the outer ring 2. Further, the projection 11 to caulk the printed wiring board is provided to the circular concave seat 4 at the center of the inner ring 5. Further, when the printed board is stuck to the circular concave seat 4, the inner ring 5 is made with injection molding for synthetic resin. Thus, the manufacturing cost can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10770478A JPS5589940A (en) | 1978-09-02 | 1978-09-02 | Drum for video tape recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10770478A JPS5589940A (en) | 1978-09-02 | 1978-09-02 | Drum for video tape recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5589940A true JPS5589940A (en) | 1980-07-08 |
| JPS5740576B2 JPS5740576B2 (en) | 1982-08-28 |
Family
ID=14465821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10770478A Granted JPS5589940A (en) | 1978-09-02 | 1978-09-02 | Drum for video tape recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5589940A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61280062A (en) * | 1985-06-05 | 1986-12-10 | Canon Electronics Inc | Manufacture of magnetic head drum |
| US6015627A (en) * | 1990-08-03 | 2000-01-18 | Sony Corporation | Magnetic head drum and method of manufacturing same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS476816U (en) * | 1971-02-16 | 1972-09-25 | ||
| JPS51147416U (en) * | 1975-05-20 | 1976-11-26 |
-
1978
- 1978-09-02 JP JP10770478A patent/JPS5589940A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS476816U (en) * | 1971-02-16 | 1972-09-25 | ||
| JPS51147416U (en) * | 1975-05-20 | 1976-11-26 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61280062A (en) * | 1985-06-05 | 1986-12-10 | Canon Electronics Inc | Manufacture of magnetic head drum |
| US6015627A (en) * | 1990-08-03 | 2000-01-18 | Sony Corporation | Magnetic head drum and method of manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5740576B2 (en) | 1982-08-28 |
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