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1. 发明专利

JPH03108961A VIDEO CAMERA 失效
公开(公告)号：JPH03108961A
公开(公告)日：1991-05-09
申请号：JP24719489
申请日：1989-09-22
申请人： FUJI PHOTO FILM CO LTD
发明人： KAWASAKI NOBORU , INENA KATSUYA
IPC分类号： H04N5/765 , H04N5/225 , H04N5/782
摘要： PURPOSE:To simplify the operation to the start of photographing by performing the switching between the camera mode and the deck mode in accordance with attachment/detachment of a lens cap. CONSTITUTION:When a lens cap 14 is detached from a photographic lens 12, a cap switch 40 outputs the signal indicating the lens cap detachment state, and a system controller 30 switches the deck mode for reproducing to the camera mode for photographing by this signal input. When the lens cap 14 is attached to the photographic lens 12 at the time of reproducing, the signal indicating the lens cap attachment state is outputted from the cap switch 40 to the system controller 30 to switch the camera mode to the deck mode. Thus, the operation for mode switching is unnecessary, and the operation to the start of photographing is simplified.

2. 发明专利

JPH01204268A CONTROL BOARD 失效
公开(公告)号：JPH01204268A
公开(公告)日：1989-08-16
申请号：JP2572488
申请日：1988-02-08
申请人： FUJI PHOTO FILM CO LTD
发明人： MIHASHI DAISUKE , NAGASHIMA YASUO , KAWASAKI NOBORU
IPC分类号： G11B17/34
摘要： PURPOSE:To obtain stable head touch by providing a projecting part, which presses the outer peripheral part of a magnetic sheet, in a control board and continuously or intermittently inclining the pressing surface of the projecting part more deeply in the inner peripheral side. CONSTITUTION:In the upstream side and downstream side of a groove-shaped recessed part 16 to be formed in the center of a control board 15, inclining surfaces 17 and 18 are respectively obtained and a projecting part 19 is provided on the outer peripheral side of the specifying board 15. Then, the magnetic sheet is pressed by this projecting part 19. The outer peripheral side of the projecting part 19 in a magnetic head moving direction is hollowed as a pressing surface 20 and made in a circular arc shape with step. Accordingly, when a magnetic head 4 slides and contacts a magnetic sheet 1 in the inner peripheral side, an outer peripheral part 20a and the magnetic sheet 1 smoothly is brought into contact and when the magnetic head 4 slides and contacts the magnetic sheet 1 in the outer peripheral side, an inner peripheral part 20b is smoothly brought contact with the magnetic sheet 1. Thus, even when the magnetic head 4 moves to the inner and outer peripheries, the stable head touch can be always obtained.

3. 发明专利

JPH0322255A STABILIZER 失效
公开(公告)号：JPH0322255A
公开(公告)日：1991-01-30
申请号：JP14670989
申请日：1989-06-12
申请人： FUJI PHOTO FILM CO LTD
发明人： MIHASHI DAISUKE , KAWASAKI NOBORU
IPC分类号： G11B17/32 , G11B17/34
摘要： PURPOSE:To keep a magnetic sheet in a stable state and to prevent fluttering, etc., by providing a projection for negative pressure generation in the upstream side of sheet rotation on a flat surface to be faced with the magnetic sheet and providing a groove part in the downstream side along the rotational direction of the sheet. CONSTITUTION:On a flat surface 23 to be faced with a magnetic sheet 22 in a main body 21 of a stabilizer, a step-shaped projection 24 is provided in the upstream side for the rotational direction of the sheet 22 and a groove 28 is formed in the downstream side along the rotational direction of the sheet 22. A magnetic head 26 is protruded to an opening part 25, which is provided in the central part of the main body 21, and in an interval between the opening part 25 and head 26, a sealing material 31 such as resin, etc., is fixed with air tightness. With the high-speed rotation of the magnetic sheet 22, an accompanying current is generated along the rotational direction and negative pressure is generated between the sheet 22, which is positioned in the downstream side of the projecting part 24, and facing surface 23. Then, the generation of positive pressure is excluded by the groove 29 and the sheet 22 is attracted, slided and securely in contact with the head 26.

4. 发明专利

JPH0322254A STABILIZER 失效
公开(公告)号：JPH0322254A
公开(公告)日：1991-01-30
申请号：JP14670889
申请日：1989-06-12
申请人： FUJI PHOTO FILM CO LTD
发明人： MIHASHI DAISUKE , KAWASAKI NOBORU
IPC分类号： G11B17/32 , G11B17/34
摘要： PURPOSE:To stably guide a magnetic sheet to a magnetic head without fail and to prevent fluttering, etc., by providing a projecting part for negative pressure generation on a flat surface facing with the magnetic sheet and providing a groove for positive pressure exclusion in a recessed part surrounding an opening part through a head. CONSTITUTION:A rectangular projection 24 is provided to be protruded to an upstream side in the rotational direction of a flat surface 23 facing with a magnetic sheet 22 in a main body 21 of a stabilizer and a recessed part 28 is formed to surround an opening part 25 through a head 26 in the central part of the main body 21. A rectangular groove part 29 is formed along the rotational direction of the magnetic sheet 22 in the downstream side for the rotational direction of the magnetic sheet 22 on the flat surface 23. An inclined surface 32 is provided in the upstream side for the rotational direction of the magnetic sheet 22. With the rotation of the magnetic sheet 22, positive pressure is generated between an auxiliary board 33 and the magnetic sheet 22 and the magnetic sheet 22 is pushed to the side of magnetic head 26. Then, negative pressure is generated between the projecting part 24 and recessed part 28 and the generation of the positive pressure is excluded by the groove part 29. Then, the magnetic sheet 22 is slided and securely in contact with the head 26.

5. 发明专利

JPH02257465A RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH02257465A
公开(公告)日：1990-10-18
申请号：JP15239789
申请日：1989-06-16
申请人： FUJI PHOTO FILM CO LTD
发明人： SHIRAHATA RYUJI , MIHASHI DAISUKE , NISHIYAMA TOMOYUKI , KAWASAKI NOBORU
IPC分类号： G11B17/32 , G11B17/34
摘要： PURPOSE:To securely draw a recording medium to a stabilizing plate at the time of start-up and to enable the recording and reproducing with proper negative pressure at the time of a steady operation state after the start-up by providing a driving means for increasing a negative pressure generating amt. of the stabilizing plate at the time of starting up a recording medium. CONSTITUTION:A coil spring 25 and a plunger actuator 26 are arranged as driving means placing a supporting shaft 23 between them between a lower surface of the stabilizing plate 20 and a base plate 13. Then, the stabilizing plate 20 is energized clockwise by the coil spring 25, while this stabilizing plate 20 is regulated in its turning position by the plunger actuator 26. Consequently, at the time of starting up a magnetic disk sheet 14, an angle of inclination of a slope 21 of the stabilizing plate 20 is increased, and moreover, since a tip 28 of the stabilizing plate 20 is allowed to approach the magnetic disk sheet 14, larger negative pressure can be generated. By this method, the magnetic disk sheet 14 is drawn enough to the side of a magnetic head 19 so that the stable recording and reproducing are performed.

6. 发明专利

JPH02173968A CONTROL PLATE 失效
公开(公告)号：JPH02173968A
公开(公告)日：1990-07-05
申请号：JP32794888
申请日：1988-12-27
申请人： FUJI PHOTO FILM CO LTD
发明人： MIHASHI DAISUKE , KAWASAKI NOBORU
IPC分类号： G11B17/34
摘要： PURPOSE:To prevent a control plate and a magnetic sheet from coming into contact with each other, to prevent the occurrence of flaws on the magnetic sheet by forming a groove in a part facing a magnetic head in the scanning direction of the magnetic head and forming a slope, which is more distant from the magnetic sheet according as going toward the lower side, below the groove in the rotation direction of the magnetic sheet. CONSTITUTION:A groove 32 where a magnetic head 15 will be put, an upper ridge 33 above the groove 32 in the rotation direction of a magnetic sheet 13, and a lower ridge 34 below the groove 32 in this rotation direction are formed on a control plate 32. A slope 35 which is more distant from the magnetic sheet 13 according as going toward the lower side is formed below the groove 32 in the rotation direction of the magnetic sheet 13, and the slope 35 has a prescribed angle theta to a recording face 13a of the magnetic sheet 13 at the time of non-rotation. Thus, the control plate and the magnetic sheet are prevented from coming into contact with each other to prevent the occurrence of flaws on the magnetic sheet.

7. 发明专利

JPH03130907A MAGNETIC HEAD 失效
公开(公告)号：JPH03130907A
公开(公告)日：1991-06-04
申请号：JP14544589
申请日：1989-06-09
申请人： FUJI PHOTO FILM CO LTD
发明人： MIHASHI DAISUKE , KATO YOSHIAKI , TAKIMOTO AKIRA , NEGISHI KENJI , KAWASAKI NOBORU
IPC分类号： G11B5/187
摘要： PURPOSE:To execute satisfactory recording and reproducing by providing a control part, which attracts a magnetic sheet to a magnetic head side by generating negative pressure between the magnetic sheet and the magnetic head, integrally to the facing surface of the magnetic head faced to the recording surface of the magnetic sheet. CONSTITUTION:On a tip surface 31 of a head base 21, a fixing part 32 is provided to crimp a head chip 22 and to fix this head chip integrally with the head base 21, and the head chip 22 is integrally fixed to this fixing part 32. In the tip part of the chip 22 faced to the recording surface of a magnetic sheet 13, a facing surface 33 is formed so that the recording surface of the magnetic sheet 13 can be slid and contacted with the facing surface, and in the almost central part of the facing surface 33, plural magnetic gap parts 34 are formed along the radial direction of the sheet 13. The facing surface 33 is an inclined surface 35 so as to be separated from a freely rotating surface N of the sheet 13 toward the downstream side of the sheet 13. Thus, with the rotation of the sheet 13, the negative pressure is generated between the inclined surface 35 of the head chip 22 and the sheet 13 and the sheet 13 is attracted to the chip 22 side and slid in contact with the magnetic gap parts 34. Then, a satisfactory head touch can be obtained.

8. 发明专利

JPH03127378A STABILIZING PLATE 失效
公开(公告)号：JPH03127378A
公开(公告)日：1991-05-30
申请号：JP26512689
申请日：1989-10-13
申请人： FUJI PHOTO FILM CO LTD
发明人： MIHASHI DAISUKE , KAWASAKI NOBORU
IPC分类号： G11B17/32 , G11B17/34
摘要： PURPOSE:To reduce the extent of deformation of a magnetic sheet to realize a satisfactory head touch by forming a slope, which prompts generation of a negative pressure, on the face facing the magnetic sheet of a stabilizing plate main body. CONSTITUTION:A slope 27 which is more distant from a free rotation position N according as going down in the rotation direction of a magnetic sheet 12 is formed on the face, which faces the magnetic sheet 12, of a stabilizing plate main body 11. Consequently, a negative pressure is generated in the area surrounded with the stabilizing plate main body 11, to which a magnetic head 15 is attached, and a projecting part 21, which surrounds the magnetic head 15 and is projected in the edge part of the stabilizing plate main body 11 toward the magnetic sheet 12, in accordance with high-speed rotation of the magnetic sheet 12, and the negative pressure is increased by the slope 27 which is formed on the stabilizing plate main body 11 and is more distant from the free rotation position N according as going down in the rotation direction of the magnetic sheet 12. Thus, the extent of deformation of the magnetic sheet 12 is reduced to realize a satisfactory head touch.

9. 发明专利

JPH01166383A MAGNETIC SHEET 失效
公开(公告)号：JPH01166383A
公开(公告)日：1989-06-30
申请号：JP32367087
申请日：1987-12-23
申请人： FUJI PHOTO FILM CO LTD
发明人： KAWASAKI NOBORU , MATSUMOTO TAKASHI
IPC分类号： G11B23/00
摘要： PURPOSE:To prevent a plate spring member from falling out of a center core by detaining the plate spring member to be attached to the center core in fitting a detaining projection part with its fitting hole part, which are formed on the plate spring member and a plate spring member fitting part respectively. CONSTITUTION:When the plate spring member 25 is inserted, the plate spring member 25 is intruded over the detaining projection part 27, and then when the hole 28 corresponds to the detaining projection part 27 in their positions, the projection part 27 is fitted into the hole 28 by virtue of an elastic de- energizing of the plate spring member 25. Consequently, when the plate spring member is inserted into a groove 22 of the center core 14 from the outside in the vertical direction to this paper, the detaining projection part 27 of the fitting part 26 is fitted in a prescribed position into the hole 28 of the plate spring member 25 so as to detain the plate spring member 25, and the plate spring member 25 is fixed to the center core 14 by pressing against the projection part 24 on the opposite side. By this method, the plate spring member can be prevented from falling out of the center core.

10. 发明专利

JPH03127379A BOTH SIDES RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JPH03127379A
公开(公告)日：1991-05-30
申请号：JP26512789
申请日：1989-10-13
申请人： FUJI PHOTO FILM CO LTD
发明人： MIHASHI DAISUKE , KAWASAKI NOBORU
IPC分类号： G11B17/32 , G11B17/34
摘要： PURPOSE:To facilitate the adjustment of positioning a member and an assembling operation and also to restrain the abrasion of a magnetic sheet and a magnetic head by stably positioning the magnetic sheet by a stabilizer and performing the simultaneous recording/reproducing on both sides of the magnetic sheet by 1st and 2nd magnetic heads. CONSTITUTION:Following the high speed rotation of the magnetic sheet 12, magnetism is generated in the recessed part 36 of the stabilizer 31 main body, and then, the magnetic sheet 12 is attracted on the side of the 1st magnetic head 14 in the recessed part 36, and one recording surface of the magnetic sheet 12 is rubbed in contact with the magnetic head 14. Then, the recording/ reproducing is performed on the one recording surface. And simultaneously, the 2nd magnetic head 15 approaches the other recording surface of the magnetic sheet 12 which is stabilized by the stabilizer 31, and rubs in contact with the surface, and then, the recording/reproducing is performed on the other recording surface. Thus, the adjustment of positioning the magnetic heads 14 and 15 and the assembling operation are facilitated and also the damage and the abrasion of the magnetic sheet 12 and the magnetic heads 14 and 15 are restrained.

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