公开(公告)号：US6023286A

公开(公告)日：2000-02-08

申请号：US4762

申请日：1998-01-08

申请人： William J. Nowak ,  James J. Appel ,  Edward C. Bock

发明人： William J. Nowak ,  James J. Appel ,  Edward C. Bock

IPC分类号： H04N1/113 ,  B41J2/44 ,  B41J2/525 ,  G02B26/12 ,  G03G15/01 ,  B41J2/47 ,  H04N1/21

CPC分类号： G02B26/127

摘要： Correcting motion quality induced color banding problems resulting from photoreceptor motion defects in a color imaging device having a laser based multifaceted polygon and a rotating cylindrical mirror whose rotation is set by a controlled rotation inducing element. A motion sensor senses the motion of the photoreceptor. Based upon motion errors a controller either advances or delays the production of a latent image. The controller further controls the rotation inducing element, beneficially a piezoelectric element, such that a latent image is produced in a predetermined location. When multiple latent images are produced, the controller beneficially causes the latent images to be properly registered.

摘要翻译： 在具有基于激光的多面多边形的彩色成像装置中的光感受器运动缺陷导致的运动质量引起的色带问题的校正和旋转的圆筒反射镜，其转动由受控旋转诱导元件设定。 运动传感器感测感光体的运动。 基于运动误差，控制器提前或延迟潜像的产生。 控制器进一步控制旋转诱导元件，有利地是压电元件，使得在预定位置产生潜像。 当产生多个潜像时，控制器有利地使潜像正确地登记。

公开(公告)号：US5969741A

公开(公告)日：1999-10-19

申请号：US664749

申请日：1996-06-17

申请人： James J. Appel ,  John R. Andrews

发明人： James J. Appel ,  John R. Andrews

IPC分类号： B41J2/465 ,  B41J2/47 ,  B41J2/385

CPC分类号： B41J2/465 ,  B41J2/471

摘要： Raster scanner assemblies, and machines which use such raster scanner assemblies, which produce spots having a variable spot dimension. Raster scanner assemblies according to the present invention include an electronic subsystem which produces both image data and a spot size control signal, a laser assembly which produces a polarized laser beam having a beam with a first dimension and which is modulated in accord with the image data, a variable aperture assembly which changes the first dimension of the laser beam, a rotating polygon having a plurality of facets sweeping the laser beam in a sweep plane, and a scan lens for focusing the laser beam onto an image plane. The variable aperture assembly beneficially includes both a liquid crystal cell, which receives the laser beam and the spot size control signal, and a polarizing filter. The liquid crystal cell changes the polarization of part of the laser beam in response to the spot size control signal, while the polarizing filter passes the laser beam as a function of the beam's polarization. Beneficially, the liquid crystal cell is a twisted nematic liquid crystal cell. Preferably, the first dimension is in the cross-scan direction.

摘要翻译： 光栅扫描仪组件和使用这种光栅扫描器组件的机器，其产生具有可变光斑尺寸的光斑。 根据本发明的光栅扫描器组件包括产生图像数据和光斑尺寸控制信号的电子子系统，产生具有第一维度的光束并且根据图像数据进行调制的偏振激光束的激光组件 ，改变激光束的第一尺寸的可变孔径组件，具有在扫描平面中扫描激光束的多个面的旋转多边形以及用于将激光束聚焦到图像平面上的扫描透镜。 可变孔组件有利地包括接收激光束的液晶单元和光点尺寸控制信号，以及偏振滤光器。 响应于光斑尺寸控制信号，液晶单元改变激光束的一部分的偏振度，而偏振滤光器作为光束偏振的函数通过激光束。 有利地，液晶单元是扭曲向列型液晶单元。 优选地，第一尺寸处于横扫方向。

公开(公告)号：US5729278A

公开(公告)日：1998-03-17

申请号：US674071

申请日：1996-07-01

申请人： James J. Appel ,  Edward C. Bock ,  David P. Wind

发明人： James J. Appel ,  Edward C. Bock ,  David P. Wind

IPC分类号： B41J2/47

CPC分类号： B41J2/473

摘要： Compact raster scanner assemblies, and systems which use such assemblies, having a laser source generating laser light; a photoreceptor moving in a process direction; and a raster scanner raster sweeping the photoreceptor. The raster scanner includes a rotating polygon, an F-.theta. scan lens in the sweep plane, and a first folding mirror positioned along a first axis for reflecting laser light passing through the F-.theta. scan lens toward the photoreceptor. The first folding mirror being aligned along an axis which is at an angle with both the process direction and the resulting fast scan direction. The raster scanner assembly further including a second folding mirror for receiving laser light reflected by the first folding mirror and for directing that laser light toward the photoreceptor such that the laser light sweeps across the photoreceptor in a direction perpendicular to the process direction.

摘要翻译： 紧凑的光栅扫描器组件和使用这种组件的系统具有产生激光的激光源; 感光体在过程方向上移动; 以及扫描感光体的光栅扫描器光栅。 光栅扫描器包括旋转多边形，扫描平面中的F-θ扫描透镜，以及沿着第一轴定位的第一折射镜，用于将通过Fθ扫描透镜的激光反射到感光体。 第一折叠镜沿着与处理方向和所得到的快速扫描方向成角度的轴对准。 光栅扫描器组件还包括第二折叠镜，用于接收由第一折叠镜反射的激光，并将激光指向感光体，使得激光沿着垂直于处理方向的方向扫过感光体。

公开(公告)号：US5659414A

公开(公告)日：1997-08-19

申请号：US492504

申请日：1995-06-20

申请人： James J. Appel ,  Aron Nacman ,  Robert H. Melino

发明人： James J. Appel ,  Aron Nacman ,  Robert H. Melino

IPC分类号： B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  G03B27/72 ,  G03G15/04 ,  G03G15/043 ,  H01S5/026 ,  H01S5/06 ,  G02B26/08

CPC分类号： G02B26/127 ,  G02B26/123

摘要： The present invention provides a means and method for efficiently and automatically monitoring and adjusting the power output of either a single or a dual beam laser diode array used to provide the scanning beams in a ROS system. Collimated light outputs from a collimator lens assembly following either a single or dual beam laser are reflected along an optical path to impinge on one or two photodiodes positioned so as to intercept the reflected light. The photodiode output is proportional to the power output of the laser diode associated with the photodiode. In one multi-beam embodiment, polarization of the laser diode output is controlled so as to ensure that only outputs from an associated laser diode is sensed by an associated photodiode. In another embodiment, a half wave plate is used to rotate the polarization of one of the laser diodes.

摘要翻译： 本发明提供了一种用于有效和自动地监视和调整用于在ROS系统中提供扫描光束的单光束或双光束激光二极管阵列的功率输出的方法和方法。 来自准直透镜组件的准直光输出随着单光束或双光束激光器被沿着光路反射以照射到一个或两个光电二极管上，以便截取反射光。 光电二极管输出与与光电二极管相关的激光二极管的功率输出成正比。 在一个多光束实施例中，控制激光二极管输出的极化，以便确保来自相关激光二极管的输出仅由相关的光电二极管感测。 在另一个实施例中，使用半波片来旋转激光二极管之一的偏振。

公开(公告)号：US5600126A

公开(公告)日：1997-02-04

申请号：US493182

申请日：1995-06-20

申请人： James J. Appel ,  Aron Nacman

发明人： James J. Appel ,  Aron Nacman

IPC分类号： H01S5/068 ,  H01S5/062 ,  H01S5/0683 ,  H01S5/40 ,  G01J1/32

CPC分类号： H01S5/4025 ,  H01S5/06236 ,  H01S5/0683 ,  H01S5/06832

摘要： The present invention presents an apparatus and method for efficiently and automatically monitoring and adjusting the power output of laser diodes used to provide the scanning beams in a ROS system. Light radiated from the back facet of the laser diode is directed onto at least a pair of back facet photodiodes. The photodiode outputs are proportional to the power output of the laser diode associated with the photodiode. The polarization of the laser diode back facet output is controlled so as to ensure that the only outputs from an associated laser diode is sensed by an associated photodiode. In one embodiment, a half wave plate is used to rotate the polarization of one of the laser diodes and in another embodiment optical fibers efficiently transmit light emitted from the back facets to the photodiode.

摘要翻译： 本发明提出了一种用于有效和自动地监视和调整用于在ROS系统中提供扫描光束的激光二极管的功率输出的装置和方法。 从激光二极管的后面辐射的光被引导到至少一对后视面光电二极管。 光电二极管输出与与光电二极管相关的激光二极管的功率输出成比例。 控制激光二极管背面输出的极化，以确保来自相关激光二极管的唯一输出由相关联的光电二极管感测。 在一个实施例中，使用半波片来旋转一个激光二极管的偏振，并且在另一实施例中，光纤有效地将从背面发射的光透射到光电二极管。

公开(公告)号：US5461412A

公开(公告)日：1995-10-24

申请号：US96357

申请日：1993-07-23

申请人： Thomas L. Paoli ,  James J. Appel

发明人： Thomas L. Paoli ,  James J. Appel

IPC分类号： B41J2/47 ,  H04N1/047 ,  H04N1/113 ,  B41J2/43

CPC分类号： B41J2/473 ,  H04N1/0473 ,  H04N1/1135 ,  H04N2201/04712 ,  H04N2201/04763

摘要： In an optical output device in which a beam of light is generated, focused to a spot, and scanned across an image plane to form a scan line, scan line curvature caused by offset between at least one light source and an optical axis of the device is corrected. The invention may be embodied in an apparatus that includes a light source capable of emitting the beam of light at a selected one of at least two selectable wavelengths and a deflecting element such as a prism that refracts the beam of light by an amount that depends on the wavelength of the beam.

摘要翻译： 在其中产生光束的光输出装置中，聚焦到一个点上，并在图像平面上扫描以形成扫描线，由装置的至少一个光源和光轴之间的偏移引起的扫描线曲率 被更正。 本发明可以体现在一种装置中，该装置包括能够以至少两个可选波长中选定的一个发射光束的光源和一个偏转元件，例如将棱镜折射光束的偏转量取决于 波束的波长。

公开(公告)号：US5208456A

公开(公告)日：1993-05-04

申请号：US747166

申请日：1991-08-19

申请人： James J. Appel ,  Thomas L. Paoli

发明人： James J. Appel ,  Thomas L. Paoli

IPC分类号： G02B26/10 ,  G02B26/12 ,  G06K15/12 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12

CPC分类号： G06K15/1257 ,  G06K15/1219 ,  H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/0476

摘要： In an optical output device wherein a beam of light is generated and focused to a spot upon an image plane, such as a photoreceptor in a xerographic printing apparatus, an apparatus for controlling the position of the spot in the slow scan direction of the image plane including a light source capable of emitting the beam of light at a selected one of at least two selectable wavelengths and beam deflecting means for deflecting the beam of light an amount which depends on the wavelength of the beam of light, the amount of deflection determining the position of the spot in the slow scan direction on the image plane. The light source may be of the solid state laser type, and may emit a plurality of beams of light the spots from which may be individually or together selectively positioned in the slow scan direction on the image plane. The beam deflecting element may be a semiconductor prism, for example of AlGaAs, and have a controllable bias applied thereto to allow further control of spot positioning.

摘要翻译： 在其中产生光束并将其聚焦到图像平面上的光斑（例如静电印刷装置中的感光体）的光输出装置中，用于控制图像的慢扫描方向上的光斑位置的装置 包括能够以至少两个可选波长中的所选择的一个发射光束的光源和用于使光束偏转取决于光束的波长的量的光束偏转装置，所述光束的偏转量确定 图像平面上慢扫描方向的光点位置。 光源可以是固体激光器类型，并且可以发射多个光束，在该平面上可以单独地或一起选择性地定位在慢扫描方向上。 光束偏转元件可以是例如AlGaAs的半导体棱镜，并且具有施加到其上的可控偏压以允许进一步控制光斑定位。

公开(公告)号：US4687317A

公开(公告)日：1987-08-18

申请号：US873579

申请日：1986-06-12

申请人： James J. Appel ,  Daniel W. Costanza ,  Richard M. Dastin

发明人： James J. Appel ,  Daniel W. Costanza ,  Richard M. Dastin

IPC分类号： G03B27/62 ,  G03G15/00 ,  G03G15/04 ,  G03G15/043 ,  G03G15/047 ,  G03G15/36 ,  G03G21/00 ,  G03G21/02 ,  G03G21/04

CPC分类号： G03G15/5016 ,  G03G15/36

摘要： A light lens scanning system operable in a document scan mode to reproduce documents onto a photosensitive record medium is modified to operate in a document edit mode. Upon selection of an edit mode, a document is placed face-up on a platen surface by the operator. A laser generated light spot output is introduced into the optical system and is directed along an optical path which is opposite to the optical path of a projected document image. The light spot output is visible to the operator at the platen as a light cursor. This movement of the cursor is placed under control of the operator. The cursor is moved through x and y coordinates to delineate an area of the document to be selectively erased. Coordinate positions are entered into a microcontroller memory. Following exposure of the entire image at the record medium, control means generate signals in response to entered coordinate positions, the signals used to actuate an erase mechanism for a time sufficient to erase the selected portion of the document.

摘要翻译： 以文档扫描模式操作以将文档再现到感光记录介质上的光透镜扫描系统被修改为在文档编辑模式下操作。 在选择编辑模式时，操作员将文档面朝上放置在压板表面上。 将激光产生的光斑输出引入到光学系统中并且沿着与投影的文档图像的光路相对的光路被引导。 光斑输出对于作为光标的压板处的操作者是可见的。 光标的移动位于操作员的控制之下。 光标移动通过x和y坐标来描绘要被选择性地擦除的文档区域。 坐标位置输入到微控制器存储器中。 在整个图像在记录介质上曝光之后，控制装置响应于所输入的坐标位置产生信号，所述信号用于致动擦除机构足以擦除文档的所选部分的时间。

公开(公告)号：US4396834A

公开(公告)日：1983-08-02

申请号：US249058

申请日：1981-03-30

申请人： James J. Appel ,  Philip L. Chen

发明人： James J. Appel ,  Philip L. Chen

IPC分类号： G02B19/00 ,  G03B27/50 ,  G03B27/54 ,  G03B27/62 ,  G03G15/04 ,  H04N1/028 ,  H01J3/14

CPC分类号： H04N1/0285 ,  G02B19/0028 ,  G02B19/0085 ,  G03B27/542 ,  H04N1/02815 ,  H04N1/0287

摘要： The illumination of a document moving through an exposure zone is maximized by placing a pair of reflectors on each side of the exposure zone in close proximity to the object plane and in an optimum reflecting position in relation to the illumination source. In a first embodiment, utilized in a continuous velocity transport (CVT) system, the reflectors comprise an integral member consisting of a plurality of connected facets. In a second embodiment, wherein the document is moved across a fixed platen, the reflectors effectively consist of two elements including a physically separated extended portion which is formed within the cross section of the platen.

摘要翻译： 通过在曝光区域的每一侧上放置一对反射器，使物体照射曝光区域的照度最大化，该反射器靠近对象平面并且在相对于照明源的最佳反射位置。 在第一实施例中，在连续速度传输（CVT）系统中，反射器包括由多个连接小面组成的整体构件。 在第二实施例中，其中原稿移动通过固定的压板，反射器有效地由两个元件组成，包括形成在压板的横截面内的物理分离的延伸部分。

公开(公告)号：US4359267A

公开(公告)日：1982-11-16

申请号：US162986

申请日：1980-06-25

申请人： James J. Appel

发明人： James J. Appel

IPC分类号： G03B27/52 ,  G02B5/17

CPC分类号： G03B27/525

摘要： A plurality of gradient index fibers are assembled into a lens array by first coating each fiber with a light absorbent medium to a desired thickness and then pressing the coated fibers into a final mold. The coating step permits greater inter-fiber distance to be effected for certain applications.

摘要翻译： 将多个梯度折射率纤维组装成透镜阵列，首先用光吸收介质将每个纤维涂覆到所需厚度，然后将涂覆的纤维压制成最终的模具。 涂覆步骤允许对某些应用实现更大的纤维间距离。