公开(公告)号：US06266078B1

公开(公告)日：2001-07-24

申请号：US09219599

申请日：1998-12-23

申请人： Katsuhide Koga ,  Tomobumi Nakayama ,  Isamu Sato ,  Tatsuhito Kataoka ,  Yukio Yokoyama ,  Takayuki Kawakami

发明人： Katsuhide Koga ,  Tomobumi Nakayama ,  Isamu Sato ,  Tatsuhito Kataoka ,  Yukio Yokoyama ,  Takayuki Kawakami

IPC分类号： B41J2435

CPC分类号： H04N1/4005 ,  G02B26/123 ,  G06K15/1204 ,  H04N1/40037

摘要： An image forming apparatus, including a driving circuit for a multichip laser chip, which can limit or interrupt emission of laser light sources in accordance with a result of comparison of an optical output of each laser light source with a limiting value during time-division control is provided. The apparatus includes a plurality of laser light source, a light-amount control device for controlling an optical output of a laser beam from each of the plurality of laser light sources to a constant amount of light by performing time division processing, and a light detection device for detecting optical outputs of the plurality of laser light sources. The light detection device includes sensor units whose number is smaller than the number of the plurality of laser light sources. The apparatus also includes a limiting-value setting device for setting a limiting value for each optical output, a comparison device for comparing a time-division detection signal for a laser beam detected by the light detection device with the limiting value set by the limiting-value setting means during the time-division light-amount control by the light-amount control device, an emission control device for controlling emission of the plurality of laser light sources in accordance with an output signal from the comparison device, and a recording medium on which an image is formed by the plurality of laser beams.

摘要翻译： 一种图像形成装置，包括用于多芯片激光芯片的驱动电路，其可以根据在每个激光光源的光输出与在时分控制期间的限制值进行比较的结果来限制或中断激光光源的发射 被提供。 该装置包括多个激光光源，光量控制装置，用于通过执行时分处理来控制来自多个激光源中的每一个的激光束的光输出到恒定量的光，以及光检测 用于检测多个激光光源的光输出的装置。 光检测装置包括数量小于多个激光光源的数量的传感器单元。 该装置还包括用于设置每个光学输出的限制值的限制值设置装置，用于将由光检测装置检测的激光束的时分检测信号与由限制值设定的限制值进行比较的比较装置， 在光量控制装置的分时光量控制期间的值设定装置，根据来自比较装置的输出信号控制多个激光光源的发射的发光控制装置，以及记录介质 由多个激光束形成图像。

公开(公告)号：US06396858B2

公开(公告)日：2002-05-28

申请号：US09257934

申请日：1999-02-26

申请人： Takayuki Kawakami ,  Tomobumi Nakayama ,  Isamu Sato ,  Tatsuhito Kataoka ,  Katsuhide Koga ,  Yukio Yokoyama

发明人： Takayuki Kawakami ,  Tomobumi Nakayama ,  Isamu Sato ,  Tatsuhito Kataoka ,  Katsuhide Koga ,  Yukio Yokoyama

IPC分类号： H01S313

CPC分类号： H01S5/0683 ,  H01S5/4025

摘要： A laser driving method is adapted for driving a plurality of laser emitting devices. A first current to be supplied to each of the plurality of laser emitting devices is always generated. A plurality of second currents controlled according to a control signal supplied from the outside are generated when necessary. The plurality of second currents are supplied to the respective laser emitting devices under supply of the respective first currents, thereby making the laser emitting devices emit respective laser beams. The plurality of laser emitting devices are caused to emit the laser beams in time division at predetermined timing to detect each of emitted light amounts by one laser monitor. Adjustment is made to at least one of the first current and the second current supplied to each of the laser emitting devices according to a plurality of detected light amounts detected. Supply of the current to the laser emitting devices not driven is stopped when the plurality of laser emitting devices are adjusted in light amount in time division.

摘要翻译： 激光驱动方法适于驱动多个激光发射装置。 始终产生要提供给多个激光发射装置中的每一个的第一电流。 当需要时，产生根据从外部提供的控制信号控制的多个第二电流。 多个第二电流在各自的第一电流的供给下被提供给各个激光发射装置，从而使激光发射装置发射各自的激光束。 使多个激光发射装置在预定定时以时分方式发射激光，以通过一个激光监视器检测每个发射光量。 根据检测到的多个检测光量，对提供给每个激光发射装置的第一电流和第二电流中的至少一个进行调整。 在多个激光发射装置以时间分光调整的情况下，停止向未驱动的激光发射装置提供电流。

公开(公告)号：US6144680A

公开(公告)日：2000-11-07

申请号：US114512

申请日：1998-07-14

申请人： Hajime Kaji ,  Tomobumi Nakayama, deceased ,  Michiharu Masuda ,  Takayuki Kawakami

发明人： Hajime Kaji ,  Tomobumi Nakayama, deceased ,  Michiharu Masuda ,  Takayuki Kawakami

IPC分类号： H01S5/06 ,  H01S5/042 ,  H01S5/0683 ,  H01S5/40 ,  H04N1/40 ,  H01S3/00

CPC分类号： H04N1/4005 ,  H01S5/4025 ,  H04N1/40037 ,  H01S5/042 ,  H01S5/0683

摘要： A laser driving apparatus for driving a plurality of laser beam sources includes a plurality of laser beam sources, a photodetector for detecting amounts of laser beams emitted from the plurality of laser beam sources, a plurality of current sources for driving the plurality of laser beam sources, a plurality of switches respectively interposed between the plurality of laser beam sources and the plurality of current sources, a plurality of controllers for controlling light amounts of the plurality of laser beam sources by comparing the light amounts detected by the photodetector with a reference value and controlling current amounts of the plurality of current sources in accordance with the comparison values, a plurality of sample/hold circuits respectively interposed between the photodetector and the plurality of controllers, and timing adjustment device for outputting a plurality of timing signals of a first type for controlling the plurality of switches and a plurality of timing signals of a second type for controlling the plurality of sample/hold circuits. The timing adjustment device outputs the plurality of timing signals of the first type for time-divisionally turning on the plurality of switches and sequentially making the plurality of laser beam sources to emit laser beams one by one. The plurality of timing signals of the second type making each of the plurality of sample/hold circuits corresponding to the plurality of switches sample while each of the plurality of switches is on. The plurality of timing signals of the second type making each of the plurality of sample/hold circuits sample while any one of the switches which are turned on before a corresponding switch is on.

摘要翻译： 用于驱动多个激光束源的激光驱动装置包括：多个激光束源，用于检测从所述多个激光束源，用于驱动所述多个激光束源的多个电流源发射的激光束的量的光电检测器 中，多个分别插入在多个激光束源和所述多个电流源，用于通过比较由所述光检测器与参考值检测的光量控制所述多个激光光源的光量的多个控制器之间的开关 控制电流量的多个电流源的根据比较值，多个分别插入在光电探测器和所述多个控制器，以及定时调整装置之间，用于输出多个用于定时的第一类型的信号的采样/保持电路的 控制多个开关和多个定时信号 用于控制多个采样/保持电路的第二类型的Nals。 定时调整装置输出第一类型的多个定时信号，用于分时地接通多个开关，并依次使多个激光束源逐个发射激光束。 在多个开关中的每一个接通时，使与多个开关相对应的多个采样/保持电路中的每一个采样的第二类型的多个定时信号被采样。 多个采样/保持电路中的每一个采样的第二类型的多个定时信号在相应的开关导通之前被接通的任何一个开关中采样。

公开(公告)号：US20130113146A1

公开(公告)日：2013-05-09

申请号：US13808181

申请日：2011-05-10

申请人： Takayuki Kawakami

发明人： Takayuki Kawakami

IPC分类号： B23Q3/08

CPC分类号： B23Q3/082 ,  B23Q1/009

摘要： A grip member is inserted into an insertion hole of a cylindrical clamp body and is capable of extending outwards to grip the inner circumferential surface of an aperture of an article. A clamp rod is engaged with the grip member; a driving mechanism capable of driving the clamp rod forwards and backwards; a seating surface formed at the top end of the cylindrical clamp body; a case member supporting the cylindrical clamp body movably forwards and backwards; a driving mechanism capable of raising an lowering the cylindrical clamp body; and a lock mechanism having a cylindrical member into which the cylindrical clamp body is inserted so as to slide freely and capable of locking the outer circumferential surface of the cylindrical clamp body by elastically deforming the cylindrical member so as to reduce its diameter.

摘要翻译： 夹持构件被插入到圆柱形夹持体的插入孔中，并且能够向外延伸以夹持物品的孔的内周表面。 夹杆与夹持构件接合; 能够向前和向后驱动夹紧杆的驱动机构; 形成在所述圆筒形夹具本体的顶端的座面; 支撑圆筒形夹具主体可前后移动的壳体部件; 驱动机构，其能够使所述筒状夹具体降低; 以及具有圆柱形构件的锁定机构，圆柱形夹具主体被插入该圆柱形构件中以便自由滑动，并且能够通过使圆柱形构件弹性变形来锁定圆筒形夹具的外周表面，从而减小其直径。

公开(公告)号：US20130042443A1

公开(公告)日：2013-02-21

申请号：US13634941

申请日：2011-04-27

申请人： Takayuki Kawakami

发明人： Takayuki Kawakami

IPC分类号： B23Q3/06

CPC分类号： B23Q1/009 ,  Y10T24/44009 ,  Y10T24/44068

摘要： A clamp device grips and fixes the inner circumferential surface of a hole in a workpiece while ensuring a support function of supporting an engagement assembly for gripping and also is capable of eliminating at least a portion of the support force after gripping.

摘要翻译： 夹持装置夹持并固定工件中的孔的内周面，同时确保支撑用于夹持的接合组件的支撑功能，并且还能够在夹紧之后消除至少一部分支撑力。

公开(公告)号：US08235370B2

公开(公告)日：2012-08-07

申请号：US12735626

申请日：2009-01-22

申请人： Takayuki Kawakami

发明人： Takayuki Kawakami

IPC分类号： B23Q3/00 ,  B23Q3/08 ,  B25B1/14 ,  B25B5/12

CPC分类号： B23Q3/082 ,  B23Q1/009

摘要： A clamp device includes a grip member, a clamp rod, and a hydraulic cylinder, and, by the grip member being inserted into an hole in a workpiece, it can grip the inner circumferential surface of the hole. The clamp device is provided with: a main body member; seating surfaces formed upon the main body member, upon which the workpiece is seated; a seating sensor that includes a pressurized air ejection hole opening to the seating surfaces; and a workpiece mounting surface that can receive and stop a workpiece at a position that is more advanced than the seating surfaces when the grip member is at an advanced position (its unclamped state), and that shifts together with the grip member during clamp operation when the grip member and the clamp rod shift towards retraction.

摘要翻译： 夹持装置包括夹持构件，夹紧杆和液压缸，并且通过把持构件插入到工件中的孔中，可夹持孔的内周面。 夹具装置设有：主体构件; 形成在主体构件上的工作台，工件就位于其上; 座椅传感器，其包括通向所述座面的加压空气喷射孔; 以及工件安装面，其能够在夹持部件处于前进位置（其未夹紧状态）的位置时比工作面更加前进的位置处接收和停止工件，并且在夹紧操作期间与夹持部件一起移动， 夹持构件和夹紧杆朝向缩回移动。

公开(公告)号：US20100327503A1

公开(公告)日：2010-12-30

申请号：US12735627

申请日：2009-01-22

申请人： Takayuki Kawakami

发明人： Takayuki Kawakami

IPC分类号： B23Q3/08 ,  B23Q3/06

CPC分类号： B23Q17/006 ,  B23Q1/009 ,  Y10T29/49764

摘要： A clamp device includes an annular grip member capable of being inserted into an hole in a workpiece and of gripping the inner circumferential surface of the hole, a clamp rod having a tapered shaft portion fitted inside the grip member and engaged therewith, a hydraulic cylinder capable of axially advancing and retracting the grip member and the clamp rod, and a clamp main body member. The clamp device is provided with seating surfaces formed upon the clamp main body member, on which the workpiece is seated, and a poor clamping detection mechanism that detects poor clamping, in the state in which the grip member is driven in its clamping direction by the hydraulic cylinder via the clamp rod, and the workpiece is in its state of being seated upon the seating surfaces.

摘要翻译： 夹紧装置包括能够插入到工件中的孔中并且夹持孔的内周面的环形夹持构件，夹紧杆，其具有嵌合在夹持构件内并与其接合的锥形轴部，具有能够 使夹持构件和夹紧杆轴向前进和后退，以及夹具主体构件。 夹具装置设置有形成在夹具主体构件上的工作座所在的座面，以及在把持构件沿其夹紧方向被驱动的状态下检测不良夹紧的差的夹紧检测机构 液压缸通过夹紧杆，并且工件处于其位于座面上的状态。

公开(公告)号：US20080071449A1

公开(公告)日：2008-03-20

申请号：US11898431

申请日：2007-09-12

申请人： Masami Kondo ,  Masaharu Tanaka ,  Takayuki Kawakami ,  Naoto Moriya

发明人： Masami Kondo ,  Masaharu Tanaka ,  Takayuki Kawakami ,  Naoto Moriya

IPC分类号： G06F17/00 ,  F16H61/46

CPC分类号： F16H61/0251 ,  F16H59/68 ,  F16H61/686 ,  F16H2342/10 ,  Y10T477/60 ,  Y10T477/691 ,  Y10T477/6937 ,  Y10T477/69383 ,  Y10T477/6939 ,  Y10T477/693958

摘要： The adjustment method includes an estimation step in which valve characteristics of the linear solenoid valves fitted to the hydraulic control circuit are measured, and estimated linear valve characteristics of the linear solenoid valves in isolation state are estimated based on the measured valve characteristics using predetermined correlations; and a correction value output step in which estimated linear piston-end pressures of the hydraulically-driven friction engagement elements immediately before the hydraulically-driven friction engagement elements are engaged are calculated based on the estimated linear valve characteristics, and the correction values that are applied to the control command values to adjust the drive currents supplied from the valve control unit to the linear solenoid valves are calculated based on differences between the estimated linear piston-end pressures and nominal piston-end pressures, and then output.

摘要翻译： 调整方法包括：测定安装在液压控制回路上的线性电磁阀的阀特性的估计步骤，并且使用预定的相关性，基于所测量的阀特性来估计处于隔离状态的线性电磁阀的估计线性阀特性; 以及校正值输出步骤，其中基于估计的线性阀特性和所应用的校正值计算紧接在液压驱动的摩擦接合元件之前的液压驱动的摩擦接合元件接合的估计的线性活塞端压力 基于估计的直线活塞 - 端部压力和标称活塞 - 端部压力之间的差异来计算控制命令值以调节从阀控制单元供应到线性电磁阀的驱动电流，然后输出。

公开(公告)号：US07196717B2

公开(公告)日：2007-03-27

申请号：US11057869

申请日：2005-02-14

申请人： Akihito Mori ,  Hajime Kaji ,  Naoto Yamada ,  Yoshitaka Yamazaki ,  Junichi Noguchi ,  Hajime Motoyama ,  Satoshi Ogawara ,  Yushi Oka ,  Takayuki Kawakami

发明人： Akihito Mori ,  Hajime Kaji ,  Naoto Yamada ,  Yoshitaka Yamazaki ,  Junichi Noguchi ,  Hajime Motoyama ,  Satoshi Ogawara ,  Yushi Oka ,  Takayuki Kawakami

IPC分类号： B41J2/47

CPC分类号： G03G15/5037

摘要： An image forming apparatus which is capable of eliminating density irregularities of an image formed caused by potential irregularities of the photosensitive member when the drum is irradiated by a beam of constant luminous intensity. A laser driver irradiates a beam modulated based on an image signal onto a photosensitive member. A current controller variably controls a driving current for driving the laser driver. A PWM pulse width converter modulates a pulse width of the beam based on the image signal. A potential sensor measures the potential of the photosensitive member after the photosensitive member is irradiated by a beam having a predetermined luminous intensity. A selector causes the current controller to correct the driving current based on low frequency components of irregularities of the potential and changes a modulation coefficient used for modulating the pulse width based on high frequency components of the irregularities of the potential.

摘要翻译： 一种图像形成装置，其能够消除由感光构件的电位不规则形成的图像的浓度不规则性，该感光构件在通过恒定发光强度的光束照射时。 激光驱动器将基于图像信号调制的光束照射到感光部件上。 电流控制器可变地控制用于驱动激光驱动器的驱动电流。 PWM脉冲宽度转换器根据图像信号调制光束的脉冲宽度。 在具有预定发光强度的光束照射感光元件之后，电位传感器测量感光元件的电位。 选择器使得电流控制器基于电位不规则的低频分量校正驱动电流，并且基于电位不规则的高频分量改变用于调制脉宽的调制系数。

公开(公告)号：US20050281572A1

公开(公告)日：2005-12-22

申请号：US11150884

申请日：2005-06-09

申请人： Takayuki Kawakami ,  Takashi Hama ,  Takatomo Fukumoto ,  Yoichi Yamada

发明人： Takayuki Kawakami ,  Takashi Hama ,  Takatomo Fukumoto ,  Yoichi Yamada

IPC分类号： G03G15/00

CPC分类号： G03G15/556 ,  G03G15/5041 ,  G03G2215/00067 ,  G03G2215/0177

摘要： A test pattern P3 longer than a length Ld corresponding to a circumferential length of a developing roller is formed along a moving direction of a photosensitive member (or developing roller). The developing roller transports a great quantity of toner on its surface in a first revolution thereof and hence, the test pattern has a high density. When the residual toner runs low, the toner transport quantity is decreased in the subsequent revolution, so that the test pattern P3 is decreased in the density at its portion beyond the length Ld from its head. If a density difference is observed at place corresponding to a boundary between image portions formed in the first revolution and the second revolution, it is concluded that image quality is degraded due to the shortage of residual toner.

摘要翻译： 沿着感光构件（或显影辊）的移动方向形成长于对应于显影辊的圆周长度的长度Ld的测试图案P3。 显影辊在其第一圈中在其表面上输送大量调色剂，因此测试图案具有高密度。 当残留调色剂运行低时，调色剂输送量在随后的旋转中减小，使得测试图案P3在其头部的长度Ld以上的部分处的密度降低。 如果在与第一旋转形成的图像部分和第二旋转之间的边界对应的位置处观察到浓度差，则得出结论，由于残留调色剂不足，图像质量下降。