公开(公告)号：US06940535B2

公开(公告)日：2005-09-06

申请号：US10366478

申请日：2003-02-14

申请人： Keiichiro Ishihara

发明人： Keiichiro Ishihara

IPC分类号： B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  H04N1/036 ,  H04N1/113 ,  H04N1/191 ,  B41J2/447

CPC分类号： B41J2/473 ,  G02B26/123 ,  H04N1/1135 ,  H04N1/1911 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744

摘要： A multi-beams optical scanning device is constituted such that a width in a main scanning direction of each of a plurality of light beams emitted from a light source unit is wider than a moving area in the main scanning direction in which a deflection facet of a deflection unit can move and exist when the plurality of light beams emitted from the light source unit are deflected toward an entire effective scanning area on the surface to be scanned and are deflected toward the synchronous detection means provided outside the effective scanning area.

摘要翻译： 多光束光学扫描装置被构成为使得从光源单元发射的多个光束中的每一个的主扫描方向的宽度比主扫描方向上的移动区域宽，其中 当从光源单元发射的多个光束朝向待扫描的表面上的整个有效扫描区域偏转时，偏转单元可以移动并存在，并且朝向设置在有效扫描区域外部的同步检测装置偏转。

公开(公告)号：US06914620B2

公开(公告)日：2005-07-05

申请号：US10180079

申请日：2002-06-27

申请人： Hiroki Yoshida ,  Yoshihiro Ishibe ,  Keiichiro Ishihara

发明人： Hiroki Yoshida ,  Yoshihiro Ishibe ,  Keiichiro Ishihara

IPC分类号： B41J2/44 ,  B41J2/47 ,  G02B26/10 ,  G02B26/12 ,  H04N1/036 ,  H04N1/113

CPC分类号： B41J2/473 ,  G02B26/123

摘要： It is an object of the present invention to provide a multi-beam scanning optical system, which can reduce relative deviation of a writing position of each light-emitting portion due to focus deviation of a synchronization detection optical device, and an image forming apparatus using the same. In the multi-beam scanning optical system having the synchronization detection optical device including a light source device, an incident optical device, a deflection device, a scanning optical device and a slit, each element is set such that relative deviation of a writing position of each light beam due to deviation of a focus position within a main scanning cross section is reduced by a first light beam limiting element provided between the deflection device and the slit and a conditional expression is satisfied.

摘要翻译： 本发明的目的是提供一种多光束扫描光学系统，其可以减少由于同步检测光学装置的聚焦偏差引起的每个发光部分的写入位置的相对偏离，以及使用 一样。 在具有包括光源装置，入射光学装置，偏转装置，扫描光学装置和狭缝的同步检测光学装置的多光束扫描光学系统中，每个元件被设定为使得每个元件的写入位置的相对偏离 通过设置在偏转装置和狭缝之间的第一光束限制元件，由于主扫描横截面内的聚焦位置的偏离而导致的每个光束被减少，并且满足条件表达式。

公开(公告)号：US06831764B2

公开(公告)日：2004-12-14

申请号：US10162871

申请日：2002-06-06

申请人： Hidekazu Shimomura ,  Hiroshi Sato ,  Manabu Kato ,  Keiichiro Ishihara

发明人： Hidekazu Shimomura ,  Hiroshi Sato ,  Manabu Kato ,  Keiichiro Ishihara

IPC分类号： G02B2608

CPC分类号： G02B26/125 ,  G02B13/0005

摘要： It is an object of this invention to provide a light scanning device capable of suppressing scanning line bending to a low level, which is caused by the arrangement error of a single-element lens serving as an imaging optical element, and an image forming apparatus using the device. In order to achieve the object, according to this invention, an imaging optical system is formed from a single-element lens, and the sectional shapes of the incident and exit surfaces in the main scanning direction are non-arcuated, and the power in the sub scanning direction substantially concentrates on the exit surface. The non-arcuated shape (curvature) of the exit surface in the main scanning direction is so determined as to make the magnification in the sub scanning direction uniform.

摘要翻译： 本发明的目的是提供一种能够将作为摄像光学元件的单体透镜的排列误差引起的扫描线弯曲抑制到低水平的光扫描装置，以及使用 装置。 为了实现该目的，根据本发明，由单一元件透镜形成成像光学系统，并且主扫描方向上的入射面和出射面的截面形状不是弧形的，并且在 副扫描方向基本上集中在出射表面上。 在主扫描方向上出射面的非圆弧形状（曲率）被确定为使副扫描方向的倍率均匀。

公开(公告)号：US06700596B2

公开(公告)日：2004-03-02

申请号：US09905951

申请日：2001-07-17

申请人： Keiichiro Ishihara

发明人： Keiichiro Ishihara

IPC分类号： G02B2610

CPC分类号： G02B26/12

摘要： An optical scanning apparatus includes a light source, a deflector with a deflecting/reflecting surface which deflects an incident light beam from the light source, an imaging optical system including at least one scanning optical element for leading the light beam deflected by the deflector onto a surface to be scanned and forming an image as a spot on the surface to be scanned and, a synchronization detector for obtaining a scanning start position signal with respect to a main scanning direction on the surface to be scanned. The scanning optical element is provided with a light-beam passage for allowing a light beam traveling toward the synchronization detector to pass through. The light-beam passage is provided in an inner portion of the scanning optical element located outside an effective portion of the scanning optical element.

摘要翻译： 光学扫描装置包括光源，具有偏转/反射表面的偏转器，偏转/反射表面偏转来自光源的入射光束;成像光学系统，包括至少一个扫描光学元件，用于将由偏转器偏转的光束引导到 要被扫描的表面和形成作为被扫描表面上的斑点的图像，以及同步检测器，用于获得关于待扫描表面上的主扫描方向的扫描开始位置信号。 扫描光学元件设置有用于允许向同步检测器行进的光束通过的光束通道。 光束通道设置在位于扫描光学元件的有效部分外侧的扫描光学元件的内部。

公开(公告)号：US06690497B2

公开(公告)日：2004-02-10

申请号：US10271750

申请日：2002-10-17

申请人： Keiichiro Ishihara

发明人： Keiichiro Ishihara

IPC分类号： G02B2608

CPC分类号： B41J2/471 ,  G02B26/125

摘要： A light scanner in which, when forming an image on a scan surface by a scanning optical device through a deflector using light from a light source device, the scanning optical device includes first an second f&thgr; lenses. The first f&thgr; lens is a meniscus positive lens whose concave surface faces the deflector within a main scanning cross-sectional plane. The second f&thgr; lens is a meniscus lens whose convex surface faces the deflector within the main scanning cross-sectional plane. The shape of the second f&thgr; lens is such that the curvature from the optical axis thereof to both ends of a lens effective portion changes from convex to concave. The second f&thgr; lens is such that it is disposed closer to the deflector at both ends of the lens effective portion than at an apex thereof on the optical axis of the second f&thgr; lens. The invention provides a light scanner which porperly corrects curvature of field and distortion in a main scanning direction and curvature of field and magnification in a subscanning direction, and which is suitable for high-definition print using a compact structure.

摘要翻译： 一种光扫描器，其中，当使用来自光源装置的光通过偏转器通过扫描光学装置在扫描表面上形成图像时，扫描光学装置首先包括第二透镜。 第一个透镜是弯月面正透镜，其凹面在主扫描横截面内面向偏转器。 第二透镜是其主表面在主扫描横截面内的偏转器的弯月透镜。 第二透镜的形状使得从其光轴到透镜有效部分的两端的曲率从凸到凹变化。 第二透镜使得其在透镜有效部分的两端处比在第二透镜的光轴上的顶点更靠近偏转器。 本发明提供了一种光扫描器，其在主扫描方向上有效地校正场的曲率和变形，并且在副扫描方向上具有曲率和倍率，并且适用于使用紧凑结构的高清晰度打印。

公开(公告)号：US06590688B2

公开(公告)日：2003-07-08

申请号：US09861721

申请日：2001-05-22

申请人： Keiichiro Ishihara

发明人： Keiichiro Ishihara

IPC分类号： G02B2608

CPC分类号： B41J2/473 ,  G02B13/0005 ,  G02B26/12 ,  G02B26/125

摘要： An optical scanning apparatus includes an incidence optical system for causing a beam emitted from a light source to be incident on a deflector, and a scanning optical system for causing the beam reflected and deflected by the deflector to be imaged on a surface to be scanned. The scanning optical system has a first lens on the deflector side and a second lens on the surface to be scanned side. The first lens has positive power in the main scanning direction and has negative power in the sub scanning direction. The power of the first lens in the main scanning direction is greater than the power of the second lens in the main scanning direction, and the second lens has positive power in the sub scanning direction.

公开(公告)号：US06556332B2

公开(公告)日：2003-04-29

申请号：US09826910

申请日：2001-04-06

申请人： Keiichiro Ishihara

发明人： Keiichiro Ishihara

IPC分类号： G02B2608

CPC分类号： B41J2/471 ,  G02B26/125

摘要： A light scanner in which, when forming an image on a scan surface by a scanning optical device through a deflector using light from a light source device, the scanning optical device includes first and second f&thgr; lenses. The first f&thgr; lens is a meniscus positive lens whose concave surface faces the deflector within a main scanning cross-sectional plane. The second f&thgr; lens is a meniscus lens whose convex surface faces the deflector within the main scanning cross-sectional plane. The shape of the second f&thgr; lens is such that the curvature from the optical axis thereof to both ends of a lens effective portion changes from convex to concave. The second f&thgr; lens is such that it is disposed closer to the deflector at both ends of the lens effective portion than at an apex thereof on the optical axis of the second f&thgr; lens. The invention provides a light scanner which properly corrects curvature of field and distortion in a main scanning direction and curvature of field and magnification in a subscanning direction, and which is suitable for high-definition print using a compact structure.

摘要翻译： 一种光扫描器，其中，当使用来自光源装置的光通过偏转器通过扫描光学装置在扫描表面上形成图像时，扫描光学装置包括第一和第二透镜。 第一个透镜是弯月面正透镜，其凹面在主扫描横截面内面向偏转器。 第二透镜是其主表面在主扫描横截面内的偏转器的弯月透镜。 第二透镜的形状使得从其光轴到透镜有效部分的两端的曲率从凸到凹变化。 第二透镜使得其在透镜有效部分的两端处比在第二透镜的光轴上的顶点更靠近偏转器。 本发明提供了一种光扫描器，其适当地校正主扫描方向上的场曲和畸变，并且在副扫描方向上具有曲率和倍率，并且适用于使用紧凑结构的高清晰度打印。

公开(公告)号：US08837053B2

公开(公告)日：2014-09-16

申请号：US13598725

申请日：2012-08-30

申请人： Keiichiro Ishihara ,  Masakazu Tohara

发明人： Keiichiro Ishihara ,  Masakazu Tohara

IPC分类号： G02B3/00 ,  G02B9/00 ,  G02B15/14

CPC分类号： G02B15/14 ,  G02B3/0087 ,  G02B15/177

摘要： A zoom lens includes an aperture diaphragm, and a plurality of lens units including a negative lens unit arranged on a light incident side of the aperture diaphragm, the zoom lens being configured to make variable a focal length by changing an interval in the plurality of lens units. The negative lens unit includes a negative lens having a radial type refractive index distribution and a concave surface on the light incident side. The negative lens has a wavelength dispersion distribution in which a differential value is negative on an optical axis of the zoom lens, and the differential value increases at a position that is more distant from the optical axis.

摘要翻译： 变焦透镜包括孔径光阑，以及多个透镜单元，包括布置在孔径光阑的光入射侧的负透镜单元，变焦透镜被配置为通过改变多个透镜中的间隔来变焦焦距 单位。 负透镜单元包括在光入射侧具有径向折射率分布和凹面的负透镜。 负透镜具有在变焦透镜的光轴上差分值为负的波长色散分布，并且微分值在远离光轴的位置处增加。

公开(公告)号：US20110043470A1

公开(公告)日：2011-02-24

申请号：US12851757

申请日：2010-08-06

申请人： Keiichiro Ishihara ,  Michiru Senda ,  Makoto Watanabe ,  Masanobu Ikeda ,  Yoshikazu Sasaki

发明人： Keiichiro Ishihara ,  Michiru Senda ,  Makoto Watanabe ,  Masanobu Ikeda ,  Yoshikazu Sasaki

IPC分类号： G06F3/041 ,  H01J40/14

CPC分类号： G06F3/042 ,  G06F3/0412 ,  G06F3/04883 ,  G06F2203/04108

摘要： A sensor device includes: one or more sensor elements each including first and second diode elements connected in series and a sensor driving section. The cathode of the second diode element is connected to the anode of the first diode element. The sensor driving section controls on-off state of the first diode element through changing a gate voltage under a fixed cathode voltage, and controls on-off state of the second diode element through changing a gate voltage under a fixed anode voltage. The sensor driving section drives the second diode element, maintaining a relationship of Vg2(off)

摘要翻译： 传感器装置包括：一个或多个传感器元件，每个传感器元件包括串联连接的第一和第二二极管元件和传感器驱动部分。 第二二极管元件的阴极连接到第一二极管元件的阳极。 传感器驱动部通过改变固定阴极电压下的栅极电压来控制第一二极管元件的导通截止状态，并且通过在固定的阳极电压下改变栅极电压来控制第二二极管元件的导通截止状态。 传感器驱动部驱动第二二极管元件，保持Vg2（off）

公开(公告)号：US07053922B2

公开(公告)日：2006-05-30

申请号：US10631781

申请日：2003-08-01

申请人： Manabu Kato ,  Hiroshi Sato ,  Hidekazu Shimomura ,  Keiichiro Ishihara

发明人： Manabu Kato ,  Hiroshi Sato ,  Hidekazu Shimomura ,  Keiichiro Ishihara

IPC分类号： B41J27/00

CPC分类号： B41J2/471 ,  G02B26/124 ,  G02B26/125

摘要： An optical scanning apparatus includes a light source unit, a deflecting unit for deflecting and scanning a light beam from the light source unit, and a scanning optical system for scanning the light beam deflected by the deflecting unit on a surface to be scanned. The scanning optical system includes a diffraction portion having an aspherical function in a sub-scanning direction.

摘要翻译： 一种光学扫描装置，包括：光源单元，用于偏转和扫描来自光源单元的光束的偏转单元;以及扫描光学系统，用于将由偏转单元偏转的光束扫描在待扫描的表面上。 扫描光学系统包括在副扫描方向上具有非球面功能的衍射部分。