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1. 发明专利

JPH05166124A MAGNETIC HEAD 失效
公开(公告)号：JPH05166124A
公开(公告)日：1993-07-02
申请号：JP5656592
申请日：1992-02-10
申请人： SONY CORP
发明人： KOBAYASHI TOMIO , TERASAWA AKIHIKO , MURAKAMI AKIRA , URAI AKIRA , OGATA SEIICHI , SAITO TADASHI , HAYAKAWA MASATOSHI , IKEDA YOSHITO
IPC分类号： G11B5/187
摘要： PURPOSE:To enhance the reproduction efficiency over the entire part of a head core by aligning the easy magnetization directions of magnetic metallic layers in effective track width constituting parts among the magnetic metallic layers to be laminated via insulating layers and non-paralleling the easy magnetization directions of the other parts. CONSTITUTION:The magnetic metallic layers 1, 2 are multilayered films formed by laminating the plural magnetic metallic layers 1a...1g, 1h, 2a...2g, 2h via the insulating films 11, 12. The individual easy magnetization directions of the adjacent magnetic metallic layers 1a...2h are the same as the easy magnetization directions of the effective track width constituting parts and are non- paralleled in the other parts. As a result, the recording and reproducing efficiency in a magnetic gap part is improved and the reproduction efficiency over the entire part of the head core is enhanced. Then, the remarkable improvement in the head output is expected.

2. 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.

3. 发明专利

JPH05151515A MAGNETIC HEAD AND PRODUCTION OF MAGNETIC HEAD 失效
公开(公告)号：JPH05151515A
公开(公告)日：1993-06-18
申请号：JP31696691
申请日：1991-11-29
申请人： SONY CORP
发明人： TERASAWA AKIHIKO , OGATA SEIICHI , SAITO TADASHI , SUGANO TAKASHI , TAKAHASHI SHINJI , URAI AKIRA , MURAKAMI AKIRA , KOBAYASHI TOMIO
IPC分类号： G11B5/127
摘要： PURPOSE:To prevent the peeling of magnetic metallic films and to enhance reliability by fusing the glass for joining substrates facing each other at the glass thickness varying partially. CONSTITUTION:The magnetic metallic films 2 are fused and formed on at least one of the substrates 3 and 4. These substrates 3 and 4 hold these magnetic metallic films 3 and are joined by the glass 5. The substrates 3 and 4 consist of core half bodies 1A and 1B. These cores 1A and 1B are so joined as to form a working magnetic gap g between the end faces of the magnetic metallic films 2 by disposing these end faces opposite to each other. The joint of the glass 5 is formed between the substrates 3 and 4 over the entire surface thereof and at partly different thicknesses. At least a part of the glass layer is penetrated and packed to the substrates 3 and 4 by the capillarity after the superposition of the substrates. As a result, the two substrates are securely joined and the generation of a spacing therebetween is obviated. The fluctuations in the recording and reproducing characteristics and frequency characteristics of the magnetic head and the generation of defective products are prevented and the reliability is improved.

4. 发明专利

JPS60226014A ASSEMBLING METHOD OF ROTARY HEAD DEVICE 失效
公开(公告)号：JPS60226014A
公开(公告)日：1985-11-11
申请号：JP8245784
申请日：1984-04-24
申请人： SONY CORP
发明人： TERASAWA AKIHIKO
IPC分类号： G11B5/52 , G11B5/53 , G11B21/00
摘要： PURPOSE:To eliminate the need for adjusting the surface deflection of a head by working the surface of a support for attaching a head while the support is held rotatably in an assembled state then attaching the head thereto. CONSTITUTION:Rotary parts except an upper drum 30 and a head 28, i.e., a head base 16 and a rotor 20 of a rotary transformer 19 are bound to a revolving fulcrum shaft 18. The surface 27 of the head base 16 for attaching the head is finished by working while the rotating parts are held supported rotatably by means of bearings 25, 26 held to a housing 24 of a lower drum 22 coupled with a stator 23 of the transformer 19. The surface deflection accuracy of the surface 27 with respect to the shaft 18 is thus compensated and the need for the operation to adjust the surface deflection of the head 28 is eliminated by attaching the head 28 in the above-mentioned state, by which the labor for the assembling operation is lessened.

5. 发明专利

JPH05151517A MAGNETIC HEAD AND PRODUCTION OF MAGNETIC HEAD 失效
公开(公告)号：JPH05151517A
公开(公告)日：1993-06-18
申请号：JP31637091
申请日：1991-11-29
申请人： SONY CORP
发明人： TERASAWA AKIHIKO , OGATA SEIICHI , SAITO TADASHI , SUGANO TAKASHI , SAKATA KATSUMI , EGUCHI HIRONARI , HISAMURA TATSUO , KOBAYASHI TOMIO
IPC分类号： G11B5/127
摘要： PURPOSE:To provide secure joining with high reliability by adopting low-temp. metal joining for the butt joining between both core half bodies. CONSTITUTION:Magnetic metallic films 2 are deposited and formed on at least either of substrates 3 and 4 and the two substrates 3 and 4 hold the magnetic metallic films 2 and are joined by high melting glass 5. The substrates 3 and 4 consist of core half bodies 1A and 1B. The core half bodies 1A and 1B are subjected to low-temp. metal joining by disposing the end faces of the magnetic metallic films 2 opposite to each other so as to form a working magnetic gap g between both end faces. Reinforcing bodies 11 are subjected to low-temp. metal joining 10 across the two substrates 3 and 4 on the outer flanks 15A and 15B on the side opposite form the surfaces of the core half bodies 1A and 1B formed with the working magnetic gap g. As a result, the influence on the joining of the high melting glass 5 is averted at the time of joining the core half bodies 1A and 1B to each other. In addition, the core half bodies are more securely joined by the joining of the reinforcing bodies 11, by which the generation of peeling or shifting between the substrates 3 and 4 is obviated.

6. 发明专利

JPS5927969B2 JPS5927969B2 - 失效
公开(公告)号：JPS5927969B2
公开(公告)日：1984-07-10
申请号：JP11235775
申请日：1975-09-17
申请人： Sony Corp
发明人： MYAIRI EISUKE , TERASAWA AKIHIKO , YOKOMIZO MITSUAKI , SATO KOTA
IPC分类号： G11B5/588 , G11B5/127 , G11B5/52

7. 发明专利

JPS60226015A ASSEMBLING METHOD OF ROTARY HEAD DEVICE 失效
公开(公告)号：JPS60226015A
公开(公告)日：1985-11-11
申请号：JP8245884
申请日：1984-04-24
申请人： SONY CORP
发明人： SUGAWARA KOUKICHI , MATSUZAKA TAKAYOSHI , YOKOO KOUJI , TERASAWA AKIHIKO
IPC分类号： G11B5/52 , G11B5/48 , G11B5/53
摘要： PURPOSE:To eliminate the need for a head base and to decrease the number of parts by attaching directly a head to an attaching surface worked after aseembling of a rotary guide drum. CONSTITUTION:The rotary guide drum 24 is rotatably assembled via a revolving fulcrum shaft 23 and thereafter the surface 28 for attaching the head is worked by using a tool, then the magnetic head 32 is attached thereto. The head 32 is designed to be connected to a coil 27 of a rotor 26 of a rotary transformer 17 via a terminal board 33. The transmission and reception of a signal to and from the stationary side are thus made possible with the head 32 via the rotary transformer 17 and the execution of recording and/or reproducing is made possible by bringing the magnetic tape wound on the outside periphery of a stationary guide drum 16 and a rotary guide drum 24 into contact with the head 32.

8. 发明专利

JPS58119541A SLIDING MEMBER 失效
公开(公告)号：JPS58119541A
公开(公告)日：1983-07-16
申请号：JP21208981
申请日：1981-12-30
申请人： SONY CORP
发明人： OZAWA KAZUNORI , TAKAHASHI SHIROU , TERASAWA AKIHIKO , TSUKIASHI KATSUO
IPC分类号： B32B15/01 , B65H23/16 , B65H27/00 , G11B15/60 , G11B15/61
摘要： PURPOSE:To obtain a sliding member without the joints and bonded surfaces thereof by forming a sliding member for the magnetic tape of a video tape recorder, etc., with an aluminium alloy, etc., and directly building up melted amorphous metal on the sliding surface of the magnetic tape through a liquid quenching method. CONSTITUTION:A slider body 11 is turned with a prescribed supporting and turning means. And, raw amorphous metal supplied into a melting tube 12 formed with a heat-resistant material such as quartz or alumina, etc., arranged on the peripheral part of said slider body 11 is heated and melted by conducting an electric current to a high frequency coil 13 wound round said melting tube 12. Then, inactive gas such as argon gas is introduced into the melting tube 12 and a melted metal material 12 is injected from a nozzle 16 provided on the end part of the melting tube 12 onto the surface of the slider body 11. Thus, a sliding member obtained by forming an amorphous metal layer 17 showing low frictional coefficient on the surface of the slider body 11 can be formed.

9. 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.

10. 发明专利

JPH064813A PRODUCTION OF MAGNETIC HEAD 失效
公开(公告)号：JPH064813A
公开(公告)日：1994-01-14
申请号：JP15984692
申请日：1992-06-18
申请人： SONY CORP
发明人： TERASAWA AKIHIKO , OGATA SEIICHI , SAITO TADASHI , SUGANO TAKASHI , TAKAHASHI SHINJI , KOBAYASHI TOMIO
IPC分类号： G11B5/127 , G11B5/133
摘要： PURPOSE:To maintain the progression of the wear of magnetic metallic films and glass disposed on both sides thereof at the same degree and to prevent the generation of level differences by uneven wear by cutting a head core near a front gap and packing glass into the formed spaces. CONSTITUTION:Diagonal grooves 22 are cut and formed on both main surfaces of a ferrite substrate 21 and after the high melting glass 23 is packed into the grooves, the magnetic metallic films 24 are formed. The film thickness thereof corresponds to the track width in the front gap g of the magnetic head. Plural pieces of such substrates 21 are superposed on each other and the low melting glass 25 is placed thereon and is meted to integrate the substrates. The magnetic block is then cut according to the arrangement of the magnetic films 24, is subjected to surface polishing and is cut out to plural core blocks 30. Winding grooves 26 are formed at the butt end faces exposed with the magnetic films 24 and the blocks are joined and integrated via gap spacers. Finally, the tape-sliding surfaces are subjected to cylindrical polishing and the circumference is ground. The block is then sliced to magnetic head chips. Further, the contact width of the sliding surface is worked stepwise so as to be narrowed and the magnetic head is completed.

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