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1. 发明专利

JPH02193003A POSITION SENSOR MECHANISM FOR LINEAR PULSE MOTOR 失效
公开(公告)号：JPH02193003A
公开(公告)日：1990-07-30
申请号：JP1194789
申请日：1989-01-23
申请人： FUJITSU LTD
发明人： NISHIMOTO ATSUSHI , KOBAYASHI MUTSUJI , IIDA YOSHITAKA
IPC分类号： G01B7/00 , G01D5/245
摘要： PURPOSE:To achieve higher detecting resolutions when a position signal is obtained by tilting a scale tooth at the same angle in an opposite direction to each other with respect to a center line so that it becomes symmetrical horizontally with respect to the center line in an ongoing direction of a motor. CONSTITUTION:A scale tooth 21a is tilted by gamma/8 with respect to a distance (a) between centers of sensor teeth 4a and 5a, wherein gamma represents a pitch of the scale tooth and the sensor tooth. With such an arrangement, two harmonics appear with phases thereof shifted by gamma/8 from each other in the couple of the sensor teeth 4a and 5a and the couple of sensor teeth 6a and 7a. The two harmonics are equal in size with a cycle thereof remaining unchanged gamma/4. Therefore, the two harmonics become opposite in phase to cancel each other so that the combination of the harmonics is zero. An output of a Hall element between sensor pieces cancels a harmonic with a cycle of gamma/8, which allows the obtaining of a sinusoidal output without distortion. Moreover, the scale tooth 21a is made skew in symmetry horizontally with respect to a center line A of a scale 21 to eliminate positional errors due to a horizontal deviation.

2. 发明专利

JPH01252182A CONTROL CIRCUIT FOR SPEED OF MOTOR 失效
公开(公告)号：JPH01252182A
公开(公告)日：1989-10-06
申请号：JP7925788
申请日：1988-03-31
申请人： FUJITSU LTD
发明人： NISHIMOTO ATSUSHI , KOBAYASHI MUTSUJI , WATANABE TOSHIHIKO
IPC分类号： H02P1/16 , H02P29/00
摘要： PURPOSE:To start a motor rapidly by using an output value from an output means at the time of the start of the motor as a command value for forced acceleration. CONSTITUTION:A counter means 14 counting an encoder signal proportional to the rotational speed of a motor is set so that a specified bit is brought to '1' and bits of orders higher than that of the specified bit to '0' when the motor is rotated at an instructed speed. An output means 20 outputs the specified bit and the bits of the higher orders in all bits of the counter means 14 as speed error signals. An output means 22 adds a value displayed by the bits lower than the specified bit and an output from the output means 22, and outputs an added value as a phase error signal. A decision means 24 sets output values from the output means 20, 22 at fixed values when displacement from the range of a value capable of represented by the specified bit and the bits of the higher orders of the result of counting is decided.

3. 发明专利

JPH01233414A HOLOGRAM DISK ASSEMBLY 失效
公开(公告)号：JPH01233414A
公开(公告)日：1989-09-19
申请号：JP5931588
申请日：1988-03-15
申请人： FUJITSU LTD
发明人： HASEGAWA SHINYA , KOBAYASHI MUTSUJI , IKEDA HIROYUKI , YAMAGISHI FUMIO
IPC分类号： G02B26/10
摘要： PURPOSE:To easily obtain a hologram disk assembly which is free from eccentricity and surface waving by providing the hologram disk which is previously joined atop a rotor by an expandable adhesive agent sealed slightly smaller than the wall height of an adhesive material flow-preventive wall to the inside of said wall. CONSTITUTION:The hologram disk 15 which is previously joined atop the rotor by the expandable adhesive agent 43 sealed slightly smaller than the wall height of the adhesive material flow-preventive wall 37 having a rotor shaft 35 to be mounted to a rotational driving source and the flat plate rotor 33 which is perpendicularly fixed to one end of the rotor shaft and has the adhesive material flow-preventive wall 37 around the front face thereof is provided to the inside of said wall. The adhesive material 43 is thereby packed into the adhesive material flow-preventive wall 37 formed around the front face of the rotor slightly smaller by taking the expansion component thereof into account and, therefore, the bleeding of the adhesive material from the adhesive material flow-preventive wall 37 is obviated and the axial alignment at the time of mounting of the disk to the motor is easily and surely executed. In addition, the flatness of the hologram disk itself is maintained with high accuracy, by which the hologram disk assembly having no surface waving is obtd.

4. 发明专利

JPS6416246A LINEAR PULSE MOTOR 失效
公开(公告)号：JPS6416246A
公开(公告)日：1989-01-19
申请号：JP17010787
申请日：1987-07-07
申请人： FUJITSU LTD
发明人： IIDA YOSHITAKA , KOBAYASHI MUTSUJI , WATANABE TOSHIHIKO
IPC分类号： H02K41/03
摘要： PURPOSE:To reduce the cogging force by forming the pole teeth having a pitch different from the one of the scale teeth on a primary side magnetic circuit. CONSTITUTION:A primary side magnetic circuit has the plural set of poles 16a-16d formed by arranging the plural number of a tooth at an equal pitch interval P1. A secondary side magnetic circuit has the pole teeth 3a and 3b formed by arranging a plurality of a tooth at an equal pitch interval P2. The tooth pitch interval P1 is formed by a tooth pitch different from the tooth pitch interval P2 of the pole teeth 3a and 3b of the secondary side magnetic circuit (P2 + or - tooth pitch P2 divided by (2XMX the number of phases of a linear pulse motor)).

5. 发明专利

JPS63206151A LINEAR PULSE MOTOR 失效
公开(公告)号：JPS63206151A
公开(公告)日：1988-08-25
申请号：JP3699587
申请日：1987-02-19
申请人： FUJITSU LTD
发明人： NISHIMOTO ATSUSHI , KOBAYASHI MUTSUJI , WATANABE TOSHIHIKO
IPC分类号： H02K41/03
摘要： PURPOSE:To obtain a stable thrust in a linear pulse motor by disposing a bypass magnetic path formed of a soft magnetic material between magnetic paths to reduce magnetic interference between magnetic fields generated by coils. CONSTITUTION:A bypass magnetic path 18 is formed of a soft magnetic material in the same length as those of magnetic paths 6, 7 in the heights of permanent magnets 13, 14, i.e., in the same width as the size of a direction of an arrow. A movable element 12 is formed by securing in series the magnets 13, 14 to both sides of both edges of the path 18 so that the flowing directions of the bypass magnetic fluxes become the same, and by magnetically coupling poles 6-1, 6-2 and 7-1, 7-2. With this configuration, even if exciting magnetic fields generated by the paths 6, 7 and coils 5-1, 5-2 become reverse, the magnetic flux tending to creep from one path 6 or 7 to the other 7 or 6 flows in the path 18. Accordingly, magnetic interference between the magnetic fields generated by the coils 5-1, 5-2 can be reduced.

6. 发明专利

JPS63190549A LINEAR PULSE MOTOR 失效
公开(公告)号：JPS63190549A
公开(公告)日：1988-08-08
申请号：JP1997987
申请日：1987-01-30
申请人： FUJITSU LTD
发明人： KOBAYASHI MUTSUJI
IPC分类号： H02K41/03
摘要： PURPOSE:To elongate the life of a linear pulse motor, by a method wherein recesses, effecting as the reservoir of lubricating oil, are provided on the rolling surface of rollers, supporting a gap between the primary magnetic circuit and the secondary magnetic circuit of the linear pulse motor. CONSTITUTION:The scale 14 of ferromagnetic substance, on which a plurality of slits 16 is arranged in parallel with an equal pitch, is bonded to a ferromagnetic substrate 12, whereby the secondary magnetic circuit 10 of a linear pulse motor is constituted. In this case, the scale 14 of ferromagnetic substance is provided with four pieces of grooves 17 along the whole length of the rolling surface 14a of rollers at positions where at the inside edges of rollers (not shown in a diagram) supporting a gap between the secondary magnetic circuit 10 and a primary magnetic circuit (not shown in the diagram) are abutted. These grooves 17 are used as the reservoirs of lubricating oil, whereby the separation of the rolling surface due to fatigue may be prevented even when said rollers are run many times on the rolling surface 14a of the rollers; accordingly, the life of the linear pulse motor may be elongated.

7. 发明专利

JPS6323556A LINEAR PULSE MOTOR 失效
公开(公告)号：JPS6323556A
公开(公告)日：1988-01-30
申请号：JP16371486
申请日：1986-07-14
申请人： FUJITSU LTD
发明人： KOBAYASHI MUTSUJI , WATANABE TOSHIHIKO
IPC分类号： H02K41/03
摘要： PURPOSE:To suppress deformation of a raceway surface and improve positioning accuracy of a movable element by providing a hole or notch between a fitting part and the raceway surface of a frame plate. CONSTITUTION:A hole 54 is formed between a raceway surface 52 and a fitting part 53 out of a frame plate 51 of a linear pulse motor stator. This hole 53 makes a rigidity of a portion between the fitting part 53 and the raceway surface 52 lower than that of a raceway surface 52-forming part. Therefore, deformation of the fitting part 53 is absorbed by a hole 54-forming part with low rigidity when a linear pulse motor is fitted to a base stand 42 by screws 41 using the fitting part 53. As a result, a deformation of the fitting part 53 is not propagated to the raceway surface 52 and that of the raceway surface 52 is suppressed so that a positioning accuracy of the movable element is improved.

8. 发明专利

JPS6198154A Linear pulse motor 失效
标题翻译：线性脉冲电机
公开(公告)号：JPS6198154A
公开(公告)日：1986-05-16
申请号：JP22103684
申请日：1984-10-19
申请人： Fujitsu Ltd
发明人： KOBAYASHI MUTSUJI
IPC分类号： B43L13/00 , H02K41/03
CPC分类号： H02K41/03
摘要： PURPOSE:To reduce the thickness of a linear pulse motor by splitting and winding an exciting winding to grooves between teeth of a movable element, thereby reducing a leakage magnetic flux. CONSTITUTION:Teeth 202 are formed at a pitch of 7 on a stator 201. Teeth 204-207 are also formed on a movable element 203, and teeth of 7/1 of phase displacement and of zero displacement are alternately arranged. The element 203 is composed of permanent magnets 212-213, a yoke 214 for forming a magnetic path and exciting windings 208-209. Further, the windings 208-209 are split and wound on winding cores 210 as a two phase windings. Thus, when currents are flowed to the exciting windings, the directions of magnetic fluxes of the prescribed directions are obtained at the teeth 305, 204 to move the element 203. Since the windings 208-209 are split and wound in the groove between the teeth of the element 203, a leakage magnetic flux can be reduced and decreased in the thickness.
摘要翻译：目的：通过将励磁绕组分裂并缠绕到可移动元件的齿之间的凹槽来减小线性脉冲电机的厚度，从而减少漏磁通。构成：齿202在定子201上以间距7形成。齿204-207也形成在可移动元件203上，相位移和零位移的7/1的齿交替排列。元件203由永磁体212-213，用于形成磁路的磁轭214和励磁绕组208-209组成。此外，绕组208-209被分开并缠绕在绕组芯210上作为两相绕组。因此，当电流流到励磁绕组时，在齿305,204处获得规定方向的磁通量的方向以移动元件203.由于绕组208-209被分开并缠绕在齿之间的凹槽中元件203的漏电磁通量可以减小并减小厚度。

9. 发明专利

JPS58105266A DEVELOPING DEVICE 失效
公开(公告)号：JPS58105266A
公开(公告)日：1983-06-23
申请号：JP20494081
申请日：1981-12-18
申请人： FUJITSU LTD
发明人： KOBAYASHI MUTSUJI , NAKAI AKIRA
IPC分类号： G03G15/09
摘要： PURPOSE:To obtain sufficient developed density with a high resistance toner whose developing property is inferior, by making a rotary magnetic brush press- contact with an image forming body through a nonmagnetic sleeve. CONSTITUTION:On the outside circumference of a nonmagnetic sleeve 2 in a developing device, a rotary magnetic brush of a one component magnetic toner, which rotates in the direction as indicated with an arrow C is formed, and it is pressed against a rotary drum 1 by a spring 7 provided on a toner vessel 4. In this case, when linear pressure is set to 7-200g/cm, sufficient developed density is obtained. It is because a gap of 10-20mum is held, by which a high resistance toner becomes usable, by pressing of the sleeve 2. Accordingly, by pressing the sleeve 2 against the drum 1, sufficient developed density is obtained by use of a high resistance toner whose developing property is inferior.

10. 发明专利

JPS5776567A Recorder 失效
标题翻译：录音机
公开(公告)号：JPS5776567A
公开(公告)日：1982-05-13
申请号：JP15313480
申请日：1980-10-31
申请人： Fujitsu Ltd
发明人： KOBAYASHI MUTSUJI , AMAYA MIKIO , NAKAI AKIRA , KONDOU ISAO
IPC分类号： G03G15/05 , G03G15/02 , G03G15/08
CPC分类号： G03G15/0291
摘要： PURPOSE:To completely eliminate the fog in a simple constitution, by providing a charger to give the electric charging to a recording matter to the same polarity as a toner before the developing process. CONSTITUTION:A charging corotron 10a is set opposite to a recording matter 2, and a metallic plate 15 containing an earthed end is provided inside the corotron 10a to form a charger. Then the surface opposite to the corotron 10a is electrically charged to the same polarity as a toner 13 of a developer. As a result, no electric insulation is required for a developing device 5, and furthermore an electric field which is necessary for the prescribed development can be formed just by using the corotron 10a and not using any bias power supply. Thus a so-called back fog can be completely eliminated.
摘要翻译：目的：为了以简单的结构完全消除雾，通过在显影过程之前通过提供充电器来给记录物质充电至与调色剂相同的极性。构成：与记录物质2相对地设置充电电晕管10a，在电晕管10a内部设置容纳接地端子的金属板15，形成充电器。然后与corotron10相对的表面被充电到与显影剂的调色剂13相同的极性。结果，显影装置5不需要电绝缘，此外，只要通过使用电晕管10a并且不使用任何偏压电源即可形成规定的显影所需的电场。因此，可以完全消除所谓的反雾。

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