JPS57205867A - Magnetic recording and reproducing device - Google Patents
Magnetic recording and reproducing deviceInfo
- Publication number
- JPS57205867A JPS57205867A JP9004481A JP9004481A JPS57205867A JP S57205867 A JPS57205867 A JP S57205867A JP 9004481 A JP9004481 A JP 9004481A JP 9004481 A JP9004481 A JP 9004481A JP S57205867 A JPS57205867 A JP S57205867A
- Authority
- JP
- Japan
- Prior art keywords
- disc
- arm
- head
- spiral
- tip
- 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
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/04—Automatic feed mechanism producing a progressive transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, e.g. by lead-screw
Abstract
PURPOSE:To drive a magnetic head with a simple structure, by providing a driving disc movably in the axial direction in parallel with a magnetic disc and providing spiral grooves for advance and spiral projecting stripes in directions of turn opposite to each other on the upper face and the lower face of the driving disc respectively and reciprocating a trace arm. CONSTITUTION:A driving disc 7 is provided which is in parallel with a magnetic disc 5 and is movable in the direction of a shaft 2. Spiral grooves 9 for advance are provided on the upper face of the disc 7, and spiral projecting stripes 10 are formed in a direction of turn opposite to that of spiral grooves 9 on the lower face. The disc 5 is held between a head 19 at the tip of a head arm 17 and a pad 23 at the tip of a pad arm 22. When the disc 7 is rotated, a trace stylus 20 guides a pad lever 17 and a return arm 18 toward the center through a base 16. When the trace stylus 20 reaches the last stage, a plunger 14 is excited to lower the driving disc 7, and an engaging piece 21 at the tip of the return arm 18 is engaged with spiral projecting stripes 10 to evacuate the base 16 quickly. Thus, a simple structure where the driving source for the head is unnecessary is constituted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9004481A JPS57205867A (en) | 1981-06-11 | 1981-06-11 | Magnetic recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9004481A JPS57205867A (en) | 1981-06-11 | 1981-06-11 | Magnetic recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57205867A true JPS57205867A (en) | 1982-12-17 |
Family
ID=13987633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9004481A Pending JPS57205867A (en) | 1981-06-11 | 1981-06-11 | Magnetic recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57205867A (en) |
-
1981
- 1981-06-11 JP JP9004481A patent/JPS57205867A/en active Pending
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