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11. 发明专利

JPH0192912A MANUFACTURE OF THIN FILM MAGNETIC HEAD 失效
公开(公告)号：JPH0192912A
公开(公告)日：1989-04-12
申请号：JP24814287
申请日：1987-10-02
申请人： FUJI PHOTO FILM CO LTD
发明人： KATO YOSHIAKI , KAMIOKA SHIGERU
IPC分类号： G11B5/31
摘要： PURPOSE:To obtain a thin film head with excellent recording efficiency by selecting the taper angle of a front gap and a rear gap equally so as to prevent the magnetic saturation of the upper magnetic pole. CONSTITUTION:In applying taper etching to insulation films 3, 5, 7 by using a photo resist 6 as a mask, after the coated photo resist is exposed and developed to be processed as a pattern, the photo resist pattern is exposed again and subject to heat treatment at a temperature of 130 deg.C-200 deg.C. Through the heat treatment above, the taper angle after taper etching is made uniform at every position. Thus, the film thickness of the upper magnetic substance is made uniform to suppress the magnetic saturation and the thin film magnetic head with excellent recording efficiency is obtained.

12. 发明专利

JPS628321A PRODUCTION OF THIN FILM MAGNETIC HEAD 失效
公开(公告)号：JPS628321A
公开(公告)日：1987-01-16
申请号：JP14570285
申请日：1985-07-04
申请人： FUJI PHOTO FILM CO LTD
发明人： YOSHIDA SATOSHI , KAMIOKA SHIGERU , KATO YOSHIAKI
IPC分类号： G11B5/31
摘要： PURPOSE:To improve recording efficiency without allowing a decrease of film thickness in the rear gap part after the formation of an upper magnetic layer by forming a photomask in the rear gap part into an ellitical shape or the shape having rounded angles. CONSTITUTION:The part of the photomask 20 corresponding to a juncture B is formed to the elliptical shape or as a through-hole 21 having the rounded angles, then the photoresist 6 is patterned to the ellitical shape or the shape having the rounded angles by the straight transfer of the shape of the photomask 20. The photoresist is thermally hence uniformly softened in the juncture B after the heat treatment and is not steepened only at the angles of the photoresist side wall in the angle parts. The angle of the photoresist side wall in this stage is approximately 40 deg.. Insulating layers 3, 5 are provided to the shape having the gentle taper of about 40 deg. taper angle theta3 in the front cap part and taper angle theta4 in the juncture if the photoresist 6 formed in such a manner is subjected to ion milling at 40 deg. incident angle of the ion beam by using, for example, Ar ions.

13. 发明专利

JPS61227183A FLATTENING METHOD 失效
公开(公告)号：JPS61227183A
公开(公告)日：1986-10-09
申请号：JP6621185
申请日：1985-03-29
申请人： FUJI PHOTO FILM CO LTD
发明人： YOSHIDA SATOSHI , KAMIOKA SHIGERU , KATO YOSHIAKI
IPC分类号： G11B5/31 , C23F1/00 , C23F4/00
摘要： PURPOSE:To flatten the surface of an SiO2 insulator in the stage of producing a thin film magnetic head by forming a photoresist on the surface of an SiO2 insulating film on a coil conductor layer on an insulator and subjecting the same to ion milling at a specific ion incident angle. CONSTITUTION:A lower magnetic layer 3 and the 1st insulating layer 2 are successively laminated on a substrate 4 and a multi-layer coil conductor layer 1 is provided thereon. The 2nd insulating layer 5 consisting of SiO2 is formed thereon by sputtering, etc. The SiO2 insulating layer 5 constitutes the surface having the ruggedness of the coil conductor layer 1 as it is and therefore the upper magnetic material 7 itself has the ruggedness in the stage of forming the upper magnetic layer 7 consisting of 'Sendust(R)', etc., thereon. The magnetic permeability of the magnetic material is thereby decreased. The photoresist 6 is thickly coated on such rugged SiO2 insulating layer 5 and is heat-treated at 130 deg.C and thereafter the resist is subjected to ion etching in such a manner that the ion incident angle is 30-50 deg., then 75 deg. to flatten the surface of the layer 5. The generation of the raggedness to the above-mentioned magnetic material 7 is thus prevented and the magnetic head having excellent magnetic characteristic is produced.

14. 发明专利

JPS6187213A Thin film magnetic head and its production 失效
标题翻译：薄膜磁头及其生产
公开(公告)号：JPS6187213A
公开(公告)日：1986-05-02
申请号：JP20906784
申请日：1984-10-05
申请人： Fuji Photo Film Co Ltd
发明人： KATO YOSHIAKI , KAMIOKA SHIGERU , YOSHIDA SATOSHI
IPC分类号： G11B5/17 , G11B5/31
CPC分类号： G11B5/31
摘要： PURPOSE: To make gentle a step and to form a thin film magnetic head having good magnetic efficiency by forming the sectional shape of coil conductors into an approximately trapezoidal shape having the skirt part expanding out ward at the bottom end on both sides.
CONSTITUTION: The sectional shape of the coil conductors of the thin film magnetic head for magnetic recording and reproduction formed by laminating a lower magnetic layer 2, the 1st insulating layer 3, the coil conductors 4, the 2nd insulating layer 5 and an upper magnetic layer 6 in this order is made into the approximately trapezoidal shape having the skirt part expanding out ward at the size meeting the incident angle of an ion beam and the coating thickness of a photoresist at the bottom ends on both sides. The 2nd insulating layer 5 consisting of SiO
2 , Al
2 O
3 or BeO is formed by vapor deposition or sputtering after the formation of the conductors 4 and since the step by the conductors 4 is made gentle, the generation of a V-groove on the surface of the layer 5 is obviated. The layer 5 is thus formed to a substantially flat sur face.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过将线圈导体的截面形状形成为具有在两侧的底端处的裙部伸出的大致梯形的形状来形成具有良好磁效率的薄膜磁头。构成：通过层叠下磁性层2，第一绝缘层3，线圈导体4，第二绝缘层5和上磁性层形成的用于磁记录和再现的薄膜磁头的线圈导体的截面形状 6以这种顺序被制成大致梯形形状，其具有以满足离子束的入射角的尺寸和两侧底端的光致抗蚀剂的涂层厚度的外围部分向外扩张的形状。在形成导体4之后，通过气相沉积或溅射形成由SiO 2，Al 2 O 3或BeO组成的第二绝缘层5，并且由于导体4的步骤变得平缓，所以在V形槽的表面上产生V形槽第5层被消除。因此，层5形成为基本上平坦的表面。

15. 发明专利

JP2572213B2 失效
公开(公告)号：JP2572213B2
公开(公告)日：1997-01-16
申请号：JP7555286
申请日：1986-04-03
申请人： FUJI PHOTO FILM CO LTD
发明人： KATO YOSHIAKI , KUBO TAKASHI , YOSHIDA SATOSHI
IPC分类号： G11B5/31

16. 发明专利

JPH08149508A MOTION DETECTOR IN DIGITAL VIDEO TAPE RECORDER AND ITS METHOD 失效
公开(公告)号：JPH08149508A
公开(公告)日：1996-06-07
申请号：JP30835794
申请日：1994-11-18
申请人： FUJI PHOTO FILM CO LTD
发明人： KATO YOSHIAKI
IPC分类号： H04N9/804 , H04N9/808 , H04N11/04
摘要： PURPOSE: To detect a motion of an object even when only a color difference component is changed in the object. CONSTITUTION: Y data, R-Y data and B-Y data are given to a block processing circuit 1, in which block processing is executed and subject to macro block processing in a macro block processing circuit 13. A difference between a block included in a macro block of a current picture and a block included in a macro block of a preceding picture is calculated for each of the Y data, R-Y data and B-Y data at a difference value detection circuit 16. The calculated difference is added by an arithmetic circuit 17 for each macro block and a motion is discriminated from the obtained sum. Since the motion is detected by taking the R-Y data and B-Y data into account, a motion of an object in which only the color difference component changes is detected.

17. 发明专利

JPH06139681A MAGNETIC HEAD 失效
公开(公告)号：JPH06139681A
公开(公告)日：1994-05-20
申请号：JP2744392
申请日：1992-01-20
申请人： FUJI PHOTO FILM CO LTD
发明人： KATO YOSHIAKI , KUBO YASUSHI , TAKEDA MUNEHARU
IPC分类号： G11B5/187 , G11B5/60 , G11B17/32
摘要： PURPOSE:To enable high-density recording by forming the recording medium- facing end face of a magnetic head slider as a part of a spherical surface having a specific radius of curvature and forming rails of a specific width consisting of plural grooves in an air flow direction there by floating stably the head slider and decreasing the floating quantity. CONSTITUTION:The magnetic head 10 is constituted of the magnetic head slider 2 and two electromagnetic conversion elements 1, 1' which expose a magnetic gap layer on the recording medium-facing end face of the slider. The front end face 21 is formed as a part of the spherical surface of 60mm =0.3 and =10mum and

18. 发明专利

JPH0659385A PHOTOGRAPHIC FILM 失效
公开(公告)号：JPH0659385A
公开(公告)日：1994-03-04
申请号：JP21286092
申请日：1992-08-10
申请人： FUJI PHOTO FILM CO LTD
发明人： KATO YOSHIAKI
IPC分类号： G03B17/24 , G03C1/00 , G03C1/765
摘要： PURPOSE:To prevent the flawing of the surface of a magnetic head by the front end of the film. CONSTITUTION:A magnetic layer is formed on the counter photosensitive surface 28 of the photographic film 10 and various kinds of information are recorded on the magnetic layer by the magnetic head. The already recorded information s reproduced. The slope at which the front end of the film is thinner from the magnetic layer surface is formed on the front end face 20 of the film by sharpening the front end 34 of the film at the front end 32 of the film. The front end face 20 of the film is opposed to the surface of the magnetic head 22 at the time the front end 32 of the film passes the magnetic head 22. Then, the front end 32 of the film is curved toward the magnetic head 22 by the permanent set of curling, etc., at the time the front end 32 of the film drawn out of a cartridge advances to the surface of the magnetic head 22. The excessive rubbing of the surface of the magnetic head 22 by the front end face 20 of the film is thus obviated even if the front end face 20 of the film slides on the surface of the magnetic head 22 in contact therewith.

19. 发明专利

JPH0612624A THIN-FILM MAGNETIC HEAD 失效
公开(公告)号：JPH0612624A
公开(公告)日：1994-01-21
申请号：JP13158391
申请日：1991-05-08
申请人： FUJI PHOTO FILM CO LTD
发明人： KATO YOSHIAKI , KOMORI NOBORU
IPC分类号： G11B5/31
摘要： PURPOSE:To prevent the dielectric breakdown by static electricity by sticking and forming the lower magnetic film of a electromagnetic conversion element directly onto a substrate having a specific electric resistivity. CONSTITUTION:A magnetic metallic film 24 of 'SENDUST(R)' or 'Permalloy(R)', etc., which is the lower magnetic film is directly formed by sputtering on the conductive substrate 2 having

20. 发明专利

JPH04362929A PHOTOGRAPHIC FILM CAPABLE OF MAGNETIC RECORDING, RECORDING METHOD AND SYSTEM, AND SYSTEM FOR CAMERA AND LABORATORY 失效
公开(公告)号：JPH04362929A
公开(公告)日：1992-12-15
申请号：JP26123691
申请日：1991-09-13
申请人： FUJI PHOTO FILM CO LTD
发明人： KOMORI NOBORU , KATO YOSHIAKI , YOSHIDA SATOSHI
IPC分类号： G03B17/24 , G03B31/00 , G03C1/00 , G03C1/765 , G03C5/14
摘要： PURPOSE:To widen a magnetic area per image plane area by providing perforation at least on either side edge part of a film and setting a magnetic recording track area over the entier length of side surface adjacent to the image plane area on the side edge part. CONSTITUTION:The perforation 2 exists on either side edge part of the film in an area surrounded by the extension of a short side 3a parallel with the film width direction of a photographic image plane area 3, the extension of the short side 3'b of the photographic image plane area 3' opposed to the short side 3a, and the long sides 1e and 1e' of the photographic film. Furthermore, the magnetic tracks t1 and t2 are set over the entire length of the side surface area adjacent to one side of the area 3 in the film width direction. Then, the length of the magnetic recording tracks t3 and t4 is regulated by the extensions of the short sides 3a and 3b, but it has only to be the same length with respect to one image plane area.

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