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1. 发明专利

JPS5473615A MAGNETIC RECORDING METHOD 失效
公开(公告)号：JPS5473615A
公开(公告)日：1979-06-13
申请号：JP14088577
申请日：1977-11-24
申请人： SONY CORP
发明人： IWABUCHI KIETSU , SATOU KOUTA , MIYAIRI EISUKE
IPC分类号： H04N5/7826 , G11B5/027 , G11B5/187 , H04N5/78
摘要： PURPOSE:To minimize the reproduction of crosstalk of recorded signal when reproducing a track, by using magnetic head having a pair of core half bodies engaged with each other, and specifying the form of engagement in consideration of the relative running direction of magnetic head and magnetic tape. CONSTITUTION:On a magnetic tape T running in the direction of arrow (c), signals are recorded by two magnetic heads HA, HB in a manner to compose recording tracks 4A, 4B, which are adjacent to each other, successively. At this time, it is so disposed that, of the end edges in track widthwise direction of magnetic air gaps gA, gB of HA, HB, the protruding end part 15 caused by engagement of two core half bodies 13, 14 at the end edge located at the recorded magnetic track side may be positioned in the preceding side with respect to the moving direction of magnetic heads HA, HB shown by arrows (a), (b). And, the end face 16 in a trak width defining groove 8 magnetically opposing to the protruding end part 15 is positioned to run following up the protruding end part 15 about the running directions 9, 6 of the magnetic heads.

2. 发明专利

JPS58111120A COMPOSITE MAGNETIC HEAD 失效
公开(公告)号：JPS58111120A
公开(公告)日：1983-07-02
申请号：JP20853981
申请日：1981-12-23
申请人： SONY CORP
发明人： SATOU KOUTA , TAKEKOSHI HIROBUMI
IPC分类号： G11B5/17 , G11B5/265
摘要： PURPOSE:To reduce the quantity of AM fogging and crossstalk and improve picture quality at the time of reproduction by improving the winding method of a double azimuth head. CONSTITUTION:The 1st magnetic head 20 forming a working gap (g) with minus azimuth by abutting a pair of core half bodies 11, 12 and the 2nd magnetic head forming the working gap with plus azimuth by abutting a pair of core half bodies 13, 14 are united as one body to constitute a double azimuth magnetic head 15. A winding 16 for unbalanced winding is wound around the 1st magnetic head 20 so as to wind the 2nd magnetic head in it. The ratio of winding frequency between winding parts 16a and 16b is selected so as to minimize the quantity of AM fogging. In the 2nd magnetic head 21, a winding 17 is wound around a head core half body 14 in the direction intersecting with the recording medium scanning direction and, on the way of the winding 17, a part 17a of the winding 17 is passed through a winding hole 18 of the 1st magnetic head 20 to be reversely wound.

3. 发明专利

JPS5246810A CENTRIFUGAL FORCE TYPE MAGNETIC HEAD DEVICE 失效
公开(公告)号：JPS5246810A
公开(公告)日：1977-04-14
申请号：JP12240875
申请日：1975-10-13
申请人： SONY CORP
发明人： YOKOMIZO MITSUAKI , MIYAIRI EISUKE , TERASAWA AKIHIKO , SATOU KOUTA
IPC分类号： G11B5/588 , G11B5/53
摘要： PURPOSE:To render it possible to improve the tracking property of a chip and a head by fixing a head chip to a spring member formed of carbon fiber etc.

4. 发明专利

JPS5236015A MANUFACTURING METHOD FOR CENTRIFUGAL MAGNETIC HEAD 失效
公开(公告)号：JPS5236015A
公开(公告)日：1977-03-19
申请号：JP11235775
申请日：1975-09-17
申请人： SONY CORP
发明人： MIYAIRI EISUKE , TERASAWA AKIHIKO , YOKOMIZO MITSUAKI , SATOU KOUTA
IPC分类号： G11B5/588 , G11B5/127 , G11B5/52
摘要： PURPOSE:To improve the dimensional accuracy of an centrifugal magnetic head by adhering the head block to a base block just like interposing a block comprising tow blocks and a cylindrical block therebetween and then cutting the head block.

5. 发明专利

JPS5255622A CENTRIFUGAL TYPE MAGNETIC HEAD DEVICE 失效
公开(公告)号：JPS5255622A
公开(公告)日：1977-05-07
申请号：JP13184275
申请日：1975-11-01
申请人： SONY CORP
发明人： MIYAIRI EISUKE , YOKOMIZO MITSUAKI , TERASAWA AKIHIKO , SATOU KOUTA
IPC分类号： G11B5/588 , G11B5/53 , G11B5/58
摘要： PURPOSE:In a device for contacting a head with a tape by letting the head be protruded by centrifugal force F, the variation in the contact pressure of the bead when it has worn is reduced by controlling the initial position between the head and the tape.

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