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91. 发明专利

JPH04186805A MAGNETIC FIELD GENERATOR 失效
公开(公告)号：JPH04186805A
公开(公告)日：1992-07-03
申请号：JP31752890
申请日：1990-11-21
申请人： SEIKO EPSON CORP
发明人： JIYON BENJIYAMIN , MATSUZAWA KINYA
IPC分类号： H01F7/02 , A61B5/055
摘要： PURPOSE:To obtain the title magnetic field generator capable of easily adjusting the evenness of the central magnetic field intensity by a method wherein an adjusting mechanism vertically shifting the magnetic pole pieces in the central part is provided in the central part of the magnetic pole pieces structured so as to wrap the magnetic pole pieces in the central part. CONSTITUTION:Within the title magnetic field generating device having opposite magnetic pole pieces 2, 3 forming a cavity 5 upward and downward so as to generate a magnetic field in the cavity 5, an adjusting mechanism 6 for vertically shifting the second shims 2 is provided on the central part of the magnetic pole pieces 3 (the first shim) structured as if wrapping the magnetic pole piece in the central part (the second shims)2. For example, respective four each of permanent magnet blocks 1 are coupled with one another on the side surface parts of the opposite one pair of the first shims 3 while respective yokes 4 couple the upper and lower pairs of permanent magnets to make a magnetic circuit further to form a cavity between upper and lower magnetic pieces 2. On the other hand, the interval between the cavities of the second shims 2 is made adjustable by turning the adjusting bolt 6 to move the second shims 2. Besides, the permanent blocks 1 are to be made of rare earth magnet.

92. 发明专利

JPH04152607A MAGNETIC FIELD GENERATING DEVICE 失效
公开(公告)号：JPH04152607A
公开(公告)日：1992-05-26
申请号：JP27813890
申请日：1990-10-17
申请人： SEIKO EPSON CORP
发明人： MATSUZAWA KINYA , JIYON BENJIYAMIN
IPC分类号： H01F7/02
摘要： PURPOSE:To concentrate magnetic flux effectively in the vicinity of the center of an air gap, and a high strength magnetic field is generated without increasing magnet material by a method wherein the center part of a pole piece is composed of soft magnetic material, and its circumferential part is composed of the material having the permeability lower than the soft magnetic material. CONSTITUTION:A magnetic circuit is composed of a pair of opposing permanent magnet part 1 on which an air gap 5 is formed, and a pair of magnetic field adjusting pole piece 2, which are fixed to the permanent magnet part 1, is magnetically coupled by a tabular yoke 3 and a support pole 4. The center part 21 of the pole piece is composed of an electromagnetic soft steel plate and the circumferential part 22 is composed of SS steel having the permeability lower than that of the electromagnetic soft steel plate which constitute the center part 21. Also, the upper and the lower permanent magnet parts 1 are composed of eight permanent magnet constituent bodies having almost trapezoidal cross-section. By effectively concentrating the magnetic flux coming from the permanent magnet in the vicinity of the air gap center, the intensity of magnetic field in the air gap center can be increased, a high strength uniform magnetic field can be generated in the vicinity of the air gap center using the same quantity as before, and the device can be manufactured by the technique easier than that heretofore in use.

93. 发明专利

JPH0429304A MAGNETIC FIELD GENERATION DEVICE 失效
公开(公告)号：JPH0429304A
公开(公告)日：1992-01-31
申请号：JP13464390
申请日：1990-05-24
申请人： SEIKO EPSON CORP
发明人： MATSUZAWA KINYA
IPC分类号： H01F7/02 , A61B5/055
摘要： PURPOSE:To acquire a uniform magnetic field with high precision by providing a yoke part with an adjusting bolt for a permanent magnet part and a pole piece to finely move integrally in rectangular direction to a central axis direction of the pole piece. CONSTITUTION:In a magnet circuit, a movement body is formed by magnetically connecting a pair of permanent magnet parts 1 opposed each other with a space 7 therebetween and a pair of pole pieces 2 for magnetic field adjustment fixed to the permanent magnet part 1 to a pair of movement yokes 3, and a body formed by magnetically connecting the movement body to a recessed part of a fixing yoke 4 is supported by four pillars 5. A yoke part is provided with an adjustment bolt 6 to finely move the permanent magnet part 1 and the pole piece 2 integrally in a rectangular direction to a central axis direction of the pole piece 2. Thereby, it is possible to realize high precision and to improve uniformity without damaging a permanent magnet and peeling off adhesive.

94. 发明专利

JPH03273603A MAGNETIC FIELD GENERATOR 失效
公开(公告)号：JPH03273603A
公开(公告)日：1991-12-04
申请号：JP7411290
申请日：1990-03-23
申请人： SEIKO EPSON CORP
发明人： MATSUZAWA KINYA
IPC分类号： H01F7/02 , A61B5/055
摘要： PURPOSE:To make it possible to produce a more intense uniform magnetic field in a magnetic resonance imaging system (MRI system) without increasing the amount of magnet material by composing the permanent magnet section of a plurality of permanent magnet components inclining, within a specific range, against the horizontal face of a yoke. CONSTITUTION:A magnetic circuit has such structure as a pair of permanent magnet sections opposing through an air gap 6 are coupled magnetically with a pair of field regulating pole pieces 2 secured to the permanent magnet sections by means of a disc yoke 3 and a support 5. Upper and lower permanent magnet sections are composed of eight permanent magnet components having approxi mately trapezoidal cross section. Each permanent magnet component 1 is ar ranged, by means of the protrusion 4 of the yoke 3, such that the angle between the pole face of the permanent magnet component 1 and the horizontal face of the yoke 3 is in the range of 1-10 deg.. Consequently, flux leakage is reduced and the flux can effectively be concentrated in the vicinity of the center of the air gap.

95. 发明专利

JPH03157904A MAGNETIC FIELD GENERATOR 失效
公开(公告)号：JPH03157904A
公开(公告)日：1991-07-05
申请号：JP29790189
申请日：1989-11-16
申请人： SEIKO EPSON CORP
发明人： MATSUZAWA KINYA
IPC分类号： H01F7/02
摘要： PURPOSE:To provide uniform magnetic field effect in a permanent magnet by forming the magnet for forming an air gap in a laminated layer structure made of a plurality of rare earth element magnets. CONSTITUTION:Pole pieces 2 are secured oppositely to one ends of a pair of permanent magnets 1, and coupled at the other ends with a yoke 3 to generate a uniform magnetic field near a center between the pieces. The magnets 1 are formed in a laminated layer structure of a plurality of rare earth element magnet blocks to stably obtain a uniform magnetic field near the center of the gap. As the structure of the magnet 1, for example, the rolling directions of the blocks are arranged in the same horizontal direction in the first layer, the rolling directions of the blocks are perpendicular to the first layer in the second layer so that gaps between the blocks of the first and second layers are not superposed in combination.

96. 发明专利

JP2002029052A ULTRASONIC PRINTER 失效
公开(公告)号：JP2002029052A
公开(公告)日：2002-01-29
申请号：JP2000214701
申请日：2000-07-14
申请人： SEIKO EPSON CORP
发明人： SHINKAWA OSAMU , MATSUZAWA KINYA , UETAKE AKIHITO
IPC分类号： B41J2/045 , B41J2/015 , B41J2/055 , H04N1/034
摘要： PROBLEM TO BE SOLVED: To print at high speeds without generating mutual interferences of surface waves by moving a liquid column while holding the column when ink liquid drops are let to fly by an ultrasonic sound source. SOLUTION: In a line recording head of the ink jet printer, an acoustic lens is arranged in either a horizontal scanning direction or a vertical scanning direction and electricity is supplied in the other direction, whereby a sound source pattern corresponding to the acoustic lens is formed. Alternatively, electricity is supplied in both the horizontal scanning direction and the vertical scanning direction to form the sound source pattern corresponding to the acoustic lens. The liquid column is formed to an ink free surface by the sound source pattern in the horizontal scanning direction, and is moved while maintained in the state. Ink liquid drops are let to fly at an ink fly position by increasing the number of switching times of the sound source pattern or by increasing a voltage to be impressed.

97. 发明专利

JP2002029050A ULTRASONIC PRINTER 失效
公开(公告)号：JP2002029050A
公开(公告)日：2002-01-29
申请号：JP2000214699
申请日：2000-07-14
申请人： SEIKO EPSON CORP
发明人： SHINKAWA OSAMU , MATSUZAWA KINYA , UETAKE AKIHITO
IPC分类号： B41J2/045 , B41J2/015 , B41J2/055 , H04N1/034
摘要： PROBLEM TO BE SOLVED: To fly ink liquid drops without setting a mechanical acoustic lens. SOLUTION: A line recording head of the ink jet printer is constituted of a case body where an ink reservoir part and a slit part are formed, and a piezoelectric body 5 for shutting a rectangular prism cavity of the case body. Many strip-shaped electrode parts for constituting a front electrode FE and a back electrode BE are formed to intersect each other to the front and the back of the piezoelectric body 5. The electrodes FE and BE are electrified by an electrification pattern corresponding to grooves of a Fresnel lens from selective driving circuits FSC1 and BSC1, whereby a sound source equivalent to the Fresnel lens is formed. A convergent sound field is thus formed to an ink level to fly ink liquid drops.

98. 发明专利

JP2001270106A INK JET PRINTER 失效
公开(公告)号：JP2001270106A
公开(公告)日：2001-10-02
申请号：JP2000089585
申请日：2000-03-28
申请人： SEIKO EPSON CORP
发明人： MATSUZAWA KINYA , SHINKAWA OSAMU
IPC分类号： B41J2/045 , B41J2/055
摘要： PROBLEM TO BE SOLVED: To reduce the number of switching elements for driving actuators to discharge ink in an ink jet printer. SOLUTION: This ink jet printer has many nozzles NZ1-NZ12 formed to a nozzle plate 2. Piezoelectric elements PE1-PE12 as the actuators are arranged to upper ends of pressure chambers PR1-PR12 formed to an upper part of the nozzle plate 2 so as to fly ink liquid drops from the nozzles. The piezoelectric elements are divided to four blocks BL1-BL4. Discrete electrodes EL1-EL12 formed to upper ends of the piezoelectric elements PE1-PE12 are connected to switching elements SW1-SW3 and also common electrodes CE1-CE4 formed to lower ends of the piezoelectric elements PE1-PE12 are connected to switching elements SW4-SW7 in units of the blocks. A high frequency voltage-generating circuit 5 is connected between switching elements SW1-SW3 and SW4-SW7. The number of the switching elements is thus made smaller than the number of the nozzles.

99. 发明专利

JP2000201601A REEL FOR FISHING 失效
公开(公告)号：JP2000201601A
公开(公告)日：2000-07-25
申请号：JP654899
申请日：1999-01-13
申请人： SEIKO EPSON CORP
发明人： UETAKE AKIHITO , MATSUZAWA KINYA , SEKINO HIROICHI , SHINKAWA OSAMU
IPC分类号： A01K89/0155
摘要： PROBLEM TO BE SOLVED: To surely prevent backlash phenomena from occurring. SOLUTION: This reel is constituted as follows: (1) The rotor of a stepping motor 3 is installed coaxially to a spool 2, electricity is generated by the rotor rotation in proportion to the rotation of the spool 2 and a rotation control circuit 5 are put on by this generated output; (2) the rotational speed of the spool 2 is detected based on rotation detection pulse signals Pru-Prw having the same period as the induced voltage of exciting coils U-W of the motor 3, and the brake signal BS for generating electromagnetic braking force in a brake circuit 102 is formed and is output in the rotation control circuit 5. The electromagnetic braking force enables the rotational speed of the spool 2 to equalize itself with a preset target rotational speed capable of preventing backlash. Thus, the rotation of the rotor is suppressed by the electromagnetic braking force which arose in the brake circuit 102, i.e., the rotation of the spool 2 is suppressed and its rotational speed is reduced so as for the rotational speed to be equalized with the target rotational speed capable of preventing backlash and so as for backlash phenomena to be prevented from occurring.

100. 发明专利

JP2000134905A BRAKE FOR RUNNING BODY 失效
公开(公告)号：JP2000134905A
公开(公告)日：2000-05-12
申请号：JP30463198
申请日：1998-10-26
申请人： SEIKO EPSON CORP
发明人： SHINKAWA OSAMU , MATSUZAWA KINYA , SEKINO HIROICHI , UETAKE AKIHITO
IPC分类号： B60T8/00 , B62L1/00 , H02K49/00
摘要： PROBLEM TO BE SOLVED: To provide a brake for running bodies which causes an electric braking force to act, without providing a power source for a running body which runs by manual propelling power of a bicycle, etc., SOLUTION: The torque of a wheel is increased and transmitted to a dynamic braking machine 15, power is generated by rotating its rotor, and by its generated power a rotation controlling circuit 35 is operated. Braking power is generated at a braking time, and a vehicle speed is made equal to a target vehicle speed, by supplying a detected rotation pulse signal Pr from a comparator 38 which detects the rotation of the dynamic braking machine 15, and a target vehicle speed pulse signal from a programmable frequency divider 37 to an updown counter 39 supplying a counted value N representing a speed difference to a braking control circuit 40, and duty-controlling a braking circuit 22 which grounds the stator coil of the dynamic braking machine 15.

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