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公开(公告)号：US09116351B2
公开(公告)日：2015-08-25
申请号：US13224838
申请日：2011-09-02
申请人： Shigeaki Imai , Yukio Itami , Kensuke Masuda
发明人： Shigeaki Imai , Yukio Itami , Kensuke Masuda
CPC分类号： G02B26/124 , B41J2/442 , B41J2/473 , G02B5/09 , G02B26/123
摘要： Provided is an optical scanning device including: a plurality of light sources; an optical deflector that includes reflection surfaces that deflect different light beams toward opposite sides of the optical deflector; and a light-shielding member provided in an area between incident light beams emitted from the plurality of light sources. The light-shielding member is positioned such that a portion of the light-shielding member is in a light-shield area surrounded by a circumscribed circle of the optical deflector, a line tangent to the circumscribed circle and orthogonal to a Y direction, and the incident light beam, the Y direction being a direction parallel to a main scanning direction and passing through a rotation center of the optical deflector, the main scanning direction being a direction, in which surfaces of image carriers are scanned.
摘要翻译： 提供一种光学扫描装置，包括：多个光源; 光学偏转器，其包括使不同光束朝向光学偏转器的相对侧偏转的反射面; 以及设置在从所述多个光源发射的入射光束之间的区域中的遮光构件。 遮光部件被定位成使得遮光部件的一部分处于由光偏转器的外接圆包围的遮光区域中，与外接圆相切并与Y方向正交的线， 入射光束，Y方向是与主扫描方向平行的方向，并且穿过光偏转器的旋转中心，主扫描方向是图像载体的表面被扫描的方向。
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公开(公告)号：US20090225148A1
公开(公告)日：2009-09-10
申请号：US12365423
申请日：2009-02-04
申请人： Yukio Itami , Tomohiro Nakajima
发明人： Yukio Itami , Tomohiro Nakajima
IPC分类号： B41J2/39
CPC分类号： B41J2/451
摘要： An optical writing head includes light-emitting element array chips; a circuit board on which the light-emitting element array chips are mounted; and an imaging element array that focuses light beams emitted from the light-emitting element array chips to form optical spots. The following inequality is satisfied: L 1
摘要翻译： 光学写入头包括发光元件阵列芯片; 其上安装有发光元件阵列芯片的电路板; 以及成像元件阵列，其聚焦从发光元件阵列芯片发射的光束以形成光点。 满足以下不等式：
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33.发明申请公开(公告)号：US20070146852A1
公开(公告)日：2007-06-28
申请号：US11613445
申请日：2006-12-20
申请人： Yukio Itami
发明人： Yukio Itami
IPC分类号： G02B26/08
CPC分类号： G03G15/04036 , B41J2/471 , G02B5/09 , G02B26/12 , G02B26/121 , G02B26/123 , G03G15/04
摘要： An optical deflector including a rotary member supported by a bearing shaft and rotatively driven by a motor for deflecting a plurality of laser beams separated from each other in a rotational axis direction of the rotary member is disclosed. The optical deflector includes a polygon mirror having four sides arranged about the rotational axis direction. Each of the four sides is a continuous plane having a plurality of effective reflection areas separated from each other in the rotational axis direction.
摘要翻译： 公开了一种光学偏转器，其包括由轴承轴支撑并由电动机旋转驱动的旋转构件，用于使在旋转构件的旋转轴线方向上彼此分离的多个激光束偏转。 光学偏转器包括具有围绕旋转轴线方向布置的四个侧面的多面镜。 四边中的每一个是具有在旋转轴线方向上彼此分离的多个有效反射区域的连续平面。
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34.发明申请DC brushless motor, light deflector, optical scanning device, and image forming apparatus 有权直流无刷电机，光偏转器，光学扫描装置和图像形成装置公开(公告)号：US20060208179A1
公开(公告)日：2006-09-21
申请号：US11375286
申请日：2006-03-15
申请人： Yukio Itami
发明人： Yukio Itami
CPC分类号： G02B26/121 , G02B26/123 , H02K7/14 , H02K21/22 , H02K29/08
摘要： A light deflector is disclosed that includes a bearing, a motor, a rotary body supported by the bearing and rotated by the motor, and a polygon mirror fixed to the rotary body. The motor includes an annular permanent magnet circumferentially magnetized with six poles and fixed to the rotary body, a rotational position detector part configured to detect the rotational position of the permanent magnet, and a stator assembly including a stator core and nine coils fixed to the stator core.
摘要翻译： 公开了一种光偏转器，其包括轴承，电动机，由轴承支撑并由电动机旋转的旋转体以及固定到旋转体的多面镜。 马达包括环形永磁体，其周向磁化有六个磁极并固定到旋转体;旋转位置检测器部分，其构造成检测永磁体的旋转位置;以及定子组件，其包括定子芯和固定到定子的九个线圈 核心。
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35.发明授权Method and apparatus for polygon mirror scanning capable of performing a stable high speed polygon mirror rotation 失效能够执行稳定的高速多面镜旋转的多面镜扫描的方法和装置公开(公告)号：US06822775B2
公开(公告)日：2004-11-23
申请号：US10226344
申请日：2002-08-23
申请人： Mitsuo Suzuki , Yukio Itami , Masahiko Katoh
发明人： Mitsuo Suzuki , Yukio Itami , Masahiko Katoh
IPC分类号： G02B2608
CPC分类号： H02K5/1677 , H02K15/00
摘要： A high speed rotating apparatus including a shaft, a rotary body, and a motor. The rotary body driven by the motor has a hollow into which the shaft is inserted and forms a dynamic pressure air bearing between the rotary body and the shaft. The rotary body includes first and second rotary members. The first rotary member has an inner circumferential surface held for rotation by the dynamic pressure air bearing. The second rotary member has an inner circumferential surface fixed to the outer circumferential surface of the first rotary member through a hardening insertion process. The hardening insertion process is performed such that a tensile strength of the first rotary member is greater than an axial tensile stress to be produced in the inner circumferential surface of the first rotary member.
摘要翻译： 一种包括轴，旋转体和马达的高速旋转装置。 由电动机驱动的旋转体具有中空部，轴被插入该中空部，并在旋转体和轴之间形成动压空气轴承。 旋转体包括第一和第二旋转构件。 第一旋转构件具有由动压空气轴承保持旋转的内周面。 第二旋转构件具有通过硬化插入工艺固定到第一旋转构件的外周面的内周面。 进行硬化插入处理，使得第一旋转构件的拉伸强度大于在第一旋转构件的内周面中产生的轴向拉伸应力。
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36.发明授权公开(公告)号：US06465918B2
公开(公告)日：2002-10-15
申请号：US09883316
申请日：2001-06-19
申请人： Yukio Itami , Mitsuo Suzuki
发明人： Yukio Itami , Mitsuo Suzuki
IPC分类号： H02K2112
CPC分类号： G02B26/121 , H02K3/28 , H02K21/22 , H02K29/08
摘要： An image forming apparatus with a DC brushless motor including a permanent magnet having n magnetized poles, where n is an even number, a rotatably held rotor on which the permanent magnet is fixed, a stator core having T-shaped pole shoes corresponding to the magnetic poles of the permanent magnet, windings fixed on the stator core and including a plurality of phases for selectively generating magnetic polarities in sequence, a driver circuit for switching conduction to the windings, and a rotating position detector for detecting a rotating position of the permanent magnet. The windings are divided into a plurality of winding groups for generating magnetic polarities in a plurality of the windings so as to produce a magnetic repellent force or a magnetic attractive force between all the magnetic poles of the permanent magnet and T-shaped pole shoes of the stator core associated with selected phases by the driver circuit based on a rotating position detected by the rotating position detector.
摘要翻译： 一种具有直流无刷电动机的图像形成装置，其包括具有n个磁极的永磁体，其中n为偶数，固定有永磁体的可旋转地保持的转子，具有对应于磁性的T形极靴的定子芯 永磁体的极点，固定在定子铁芯上的绕组，并且包括用于依次选择性地产生磁极性的多个相，用于切换到绕组的导通的驱动电路，以及用于检测永磁体的旋转位置的旋转位置检测器 。 绕组被分成多个绕组，用于在多个绕组中产生磁极性，从而在永磁体的所有磁极和T型极靴的所有磁极之间产生磁驱动力或磁吸引力 基于由旋转位置检测器检测到的旋转位置由驱动器电路与选定相位相关联的定子铁心。
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公开(公告)号：US5909966A
公开(公告)日：1999-06-08
申请号：US954060
申请日：1997-10-20
申请人： Mitsuo Suzuki , Yukio Itami , Kyousuke Ono
发明人： Mitsuo Suzuki , Yukio Itami , Kyousuke Ono
CPC分类号： F16C33/1075 , F16C17/02 , F16C17/18
摘要： A self-acting air bearing includes a housing, a shaft member supported in the housing, a cylindrical member which is installed around the shaft member coaxially and rotatably, and which rotates and generates a dynamic air pressure and thereby the cylindrical member is floatingly supported from the shaft member. In the bearing, concavities and convexes are formed at a same interval in a peripheral direction in either an outer peripheral surface of the shaft member or an inner peripheral surface of the cylindrical member, and a wave of one cycle between a beginning position of the concavity and an ending position of the convex is a harmonic wave. A bearing with high stability at high speed and high accuracy and which has high stability at high speed and low unbalance vibration can be achieved.
摘要翻译： 自动空气轴承包括壳体，支撑在壳体中的轴构件，圆筒构件，其同轴并可旋转地安装在轴构件周围，并且旋转并产生动态空气压力，从而使圆柱形构件从 轴构件。 在轴承中，在轴构件的外周面或筒状构件的内周面中的圆周方向上以相同的间隔形成凹凸，并且在凹部的开始位置之间形成一个周期的波 并且凸的终止位置是谐波。 可以实现高速高精度高稳定性的轴承，并且在高速度和低不平衡振动下具有高稳定性。
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38.发明授权Method of and device using adhesively connected parts for preventing motor rotational imbalance caused by thermal expansion 失效使用粘接连接部件防止由热膨胀引起的电动机旋转不平衡的方法和装置
公开(公告)号：US5739602A
公开(公告)日：1998-04-14
申请号：US624025
申请日：1996-03-27
申请人： Mitsuo Suzuki , Yukio Itami , Wataru Ohtani , Wataru Kashima , Yoshihiro Takahashi , Noriyuki Kadowaki
发明人： Mitsuo Suzuki , Yukio Itami , Wataru Ohtani , Wataru Kashima , Yoshihiro Takahashi , Noriyuki Kadowaki
CPC分类号： H02K7/04 , G02B26/121 , H02K1/2793 , H02K1/28
摘要： The current invention is directed to a high-speed optical deflector which includes a brushless motor operating in a high-temperature environment. The brushless motor components include rotatable parts made of various materials whose thermal expansion coefficients significantly vary. These rotational components include a steel rotor flange, a magnet rotor, and an aluminum shaft. To substantially eliminate rotational imbalance or vibration caused by the thermal expansion, the above described components are fixed with a certain adhesive which prevents these components from causing the rotational imbalance. A certain heat-resistant adhesive provides a sufficient structural strength to substantially minimize a rotational imbalance caused by the thermally expanding components in an operating temperature range.
摘要翻译： 本发明涉及一种包括在高温环境中工作的无刷电机的高速光偏转器。 无刷电动机部件包括由热膨胀系数显着变化的各种材料制成的可旋转部件。 这些旋转部件包括钢转子凸缘，磁体转子和铝轴。 为了基本上消除由热膨胀引起的旋转不平衡或振动，上述部件用某种粘合剂固定，防止这些部件引起旋转不平衡。 一定的耐热粘合剂提供足够的结构强度，以在工作温度范围内基本上最小化由热膨胀部件引起的旋转失衡。
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公开(公告)号：US09846236B2
公开(公告)日：2017-12-19
申请号：US14813321
申请日：2015-07-30
申请人： Shigeaki Imai , Masataka Uehira , Kohji Sakai , Tadashi Nakamura , Yukio Itami
发明人： Shigeaki Imai , Masataka Uehira , Kohji Sakai , Tadashi Nakamura , Yukio Itami
CPC分类号： G01S17/936 , G01S7/4817 , G01S7/484 , G01S17/10 , G01S17/42 , G01S17/58
摘要： An optical scanner is provided including a light source configured to emit light, a light source driving device configured to drive the light source, a light deflector having at least one rotating reflection plane and configured to deflect the light emitted from the light source to a scanning area, and a light detector configured to output a signal to control a timing at which scanning of the scanning area by the light deflected by the light deflector starts, where the light detector and the scanning area are sequentially scanned in a single scanning by one reflection plane of the light deflector, and the light source driving device drives the light source using a first driving method when the light scans the light detector, and drives the light source using a second driving method that is different from the first driving method when the light scans the scanning area.
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40.发明授权Optical scanning device and image forming apparatus in which a plurality of scanning optical systems except one include a reflecting mirror 有权除了一个以外的多个扫描光学系统包括反射镜的光学扫描装置和图像形成装置公开(公告)号：US08928716B2
公开(公告)日：2015-01-06
申请号：US13757998
申请日：2013-02-04
申请人： Tadashi Nakamura , Toshiaki Tokita , Yukio Itami , Taku Amada , Shingo Tachikawa
发明人： Tadashi Nakamura , Toshiaki Tokita , Yukio Itami , Taku Amada , Shingo Tachikawa
CPC分类号： H04N1/04 , B41J2/473 , G02B26/10 , G02B26/123 , G02B27/141
摘要： An optical scanning device includes: a light source device that emits five light beams corresponding to four basic colors and a single specific color; and five scanning optical systems corresponding the five light beams. One light beam in a first waveband among the light beams corresponding to the four basic colors enters one scanning optical system of the five scanning optical systems. The one scanning optical system includes a dichroic mirror that transmits a light beam in a second waveband different from the first waveband. An angle θb formed between a normal to the incidence plane of the dichroic mirror and orthogonal projection to an assumed plane orthogonal to the main scanning corresponding direction of the incident path of the light beam to the incidence plane of the dichroic mirror is set at an angle of 0° or more and an angle of 45° or less.
摘要翻译： 光学扫描装置包括：光源装置，其发射对应于四种基本颜色和单一特定颜色的五个光束; 和五个对应五个光束的扫描光学系统。 对应于四种基色的光束中的第一波段中的一个光束进入五个扫描光学系统的一个扫描光学系统。 一个扫描光学系统包括分色镜，其在与第一波段不同的第二波段中透射光束。 形成在与分色镜的入射面法线正交的正交投影与垂直于光束与分色镜的入射面的入射路径的主扫描对应方向正交的假想平面的角度＆amp; 角度为0°以上，角度为45°以下。
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