GB707699A - Improvements in the heads of equipment for magnetic recording and reproduction - Google Patents
Improvements in the heads of equipment for magnetic recording and reproductionInfo
- Publication number
- GB707699A GB707699A GB11531/52A GB1153152A GB707699A GB 707699 A GB707699 A GB 707699A GB 11531/52 A GB11531/52 A GB 11531/52A GB 1153152 A GB1153152 A GB 1153152A GB 707699 A GB707699 A GB 707699A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core elements
- magnetic
- recording
- reproduction
- coils
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
707,699. Magnetic recording and reproducing apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 7, 1952 [May 10, 1951], No. 11531/52. Class 40 (2). In a magnetic recording/reproducing head having at least one magnetic circuit incorporating two rigid core elements pressed together and forming two parallel magnetic gaps. The planes of said core elements defining the main direction of the flux are at an angle to each other deviating from 180 degrees. In the embodiment' described with reference to Figs. 1 and 2, the core elements 2, 3 are gripped in non-magnetic holders 20, 21, respectively, and pressed together against spacing plates 7, 8 by a U-shaped spring 16 in conjunction with a resilient clamping piece 17, and held against 'supporting surfaces on a supporting body 24 to which the spring 16 is secured by screws 25, 26. The remaining Figures illustrate embodiments employing two magnetic circuits, such. as for stereophonic recording and reproduction. In one embodiment, Fig. 5, diametrically opposite core elements 35, 38, and coils 57, 58 thereon, respectively, are offset from the direction of travel of the recording medium. Other arrangements of the core elements may be as shown in Fig. 6a, b, c and d. In yet another embodiment, Figs. 7 and 10, the core member's are offset both from the direction of travel of the recording medium and from the perpendicular of the plane of the medium, the coils 57, 58 surrounding the parts of the core elements opposite to the recording gaps.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL707699X | 1951-05-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB707699A true GB707699A (en) | 1954-04-21 |
Family
ID=19812118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11531/52A Expired GB707699A (en) | 1951-05-10 | 1952-05-07 | Improvements in the heads of equipment for magnetic recording and reproduction |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB707699A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3019303A (en) * | 1959-05-22 | 1962-01-30 | Minnesota Mining & Mfg | Tape recording-playback head |
US3092815A (en) * | 1957-01-25 | 1963-06-04 | Ibm | Magnetic core sensing device |
US4447155A (en) * | 1980-03-29 | 1984-05-08 | Graviner Limited | Detection of light-affecting substance in a fluid |
-
1952
- 1952-05-07 GB GB11531/52A patent/GB707699A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3092815A (en) * | 1957-01-25 | 1963-06-04 | Ibm | Magnetic core sensing device |
US3019303A (en) * | 1959-05-22 | 1962-01-30 | Minnesota Mining & Mfg | Tape recording-playback head |
US4447155A (en) * | 1980-03-29 | 1984-05-08 | Graviner Limited | Detection of light-affecting substance in a fluid |
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