公开(公告)号：US5750986A

公开(公告)日：1998-05-12

申请号：US786612

申请日：1997-01-21

申请人： Frank C. Genovese

发明人： Frank C. Genovese

IPC分类号： G02B26/10 ,  G02B26/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/191 ,  H04N1/40 ,  H01J3/14

CPC分类号： H04N1/4005 ,  H04N1/053 ,  H04N1/40037 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/0471 ,  H04N2201/04786

摘要： A technique for achieving both start-of-scan detection and dynamic beam intensity regulation in a multiple laser beam raster output scanner using a single photodetector. The raster output scanner includes a source or sources of a plurality of laser beams, a rotating polygon having at least one reflecting facet for sweeping the laser beams to form a scan line path, and a photodetector for receiving illumination from the multiple laser beams and for converting those beams into beam-dependent electrical currents. The raster output scanner further includes a scan detection circuit for producing a start-of-scan signal from the beam dependent current, and a beam intensity circuit for producing an electrical output signal which depends upon the difference in beam intensity of at least two of the laser beams. Beneficially, the raster output scanner also includes an optical fiber that collects a portion of the light flux in the sweeping laser beams which directs the light flux onto the photodetector.

摘要翻译： 一种用于在使用单个光电检测器的多激光束光栅输出扫描仪中实现扫描起始扫描检测和动态光束强度调节的技术。 光栅输出扫描器包括多个激光束的源或源，旋转多边形，具有用于扫描激光束以形成扫描线路径的至少一个反射面，以及用于接收来自多个激光束的照明的光电检测器， 将这些光束转换成与光束相关的电流。 光栅输出扫描器还包括扫描检测电路，用于根据光束相关电流产生扫描起始信号;以及光束强度电路，用于产生电输出信号，该电输出信号取决于光束强度中至少两个的光束强度的差异 激光束。 有利地，光栅输出扫描器还包括光纤，其收集扫描激光束中的光束的一部分，其将光通量引导到光电检测器上。

公开(公告)号：US5724088A

公开(公告)日：1998-03-03

申请号：US623242

申请日：1996-03-27

申请人： Frank C. Genovese

发明人： Frank C. Genovese

IPC分类号： G06K15/12 ,  B41J2/47

CPC分类号： G06K15/1214

摘要： A control system for the laser diode of a raster output scanner, such as used in a laser printer, uses reflex exposure control and a high-speed drive circuit. With the creation of each pixel on the photoreceptor, a sensor receiving some of the light flux from the diode accumulates charge on a capacitor, and when the charge on the capacitor exceeds a predetermined amount, a reflex circuit acts to shut the laser diode off. The laser diode is modulated via a high-speed trigger circuit wherein the diode is maintained just below its lasing voltage.

摘要翻译： 用于激光打印机中的光栅输出扫描器的激光二极管的控制系统使用反射曝光控制和高速驱动电路。 随着感光体上每个像素的产生，接收来自二极管的一些光通量的传感器积聚电容器上的电荷，并且当电容器上的电荷超过预定量时，反射电路用于关闭激光二极管。 激光二极管通过高速触发电路进行调制，其中二极管保持刚好低于其激光电压。

公开(公告)号：US5552863A

公开(公告)日：1996-09-03

申请号：US391818

申请日：1995-02-21

申请人： Frank C. Genovese

发明人： Frank C. Genovese

IPC分类号： G03G15/01 ,  G03G13/00

CPC分类号： G03G15/011 ,  G03G15/0152 ,  G03G15/0163 ,  G03G2215/017 ,  G03G2215/0658

摘要： A xerographic print engine includes a rotatable photoreceptor belt. The photoreceptor is exposed by delivering energy to the inward-facing side of the belt, and the electrostatic latent image is developed by applying toner to the outward-facing side of the belt. The system is particularly useful for liquid-development based xerographic systems, as multiple layers of toner can be accumulated on the outward-facing side of the photoreceptor belt without interfering with subsequent exposure steps. A cylindrical lens is in contact with the photoreceptor belt and is adapted to focus light from a light source at a developing region of the photoreceptor belt.

摘要翻译： 静电印刷引擎包括可旋转感光带。 通过将能量递送到带的向内侧来曝光感光体，并且通过将调色剂施加到带的向外侧来显影静电潜像。 该系统对于基于液体显影的静电复印系统特别有用，因为多层调色剂可以在感光带的向外的一侧积聚而不会干扰随后的曝光步骤。 圆柱形透镜与感光带接触，并且适于将来自光源的光聚焦在感光带的显影区域。

公开(公告)号：US5552820A

公开(公告)日：1996-09-03

申请号：US446966

申请日：1995-05-22

申请人： Frank C. Genovese

发明人： Frank C. Genovese

IPC分类号： B41J2/44 ,  G02B26/12 ,  G03F1/00 ,  G03G15/04 ,  B41J2/465

CPC分类号： B41J2/473 ,  B41J2/465 ,  G02B26/123 ,  G02B26/125

摘要： In an apparatus for exposing a set of discrete locations on a photosensitive surface, such as an electrophotographic printer, a scanner transmits a light beam along a scan path onto the photosensitive surface. An optical element, interposed in the scan path between the photosensitive surface and the scanner, defines a plurality of apertures therein where no more than one aperture is disposed at any location along a linear dimension of the optical element parallel to the scan direction. The light beam transmitted through each aperture exposes a discrete location on the photosensitive surface.

摘要翻译： 在用于曝光感光表面上的一组离散位置的装置（例如电子照相打印机）中，扫描器将沿着扫描路径的光束传送到感光表面上。 插入在感光表面和扫描仪之间的扫描路径中的光学元件在其中限定多个孔，其中在沿着与扫描方向平行的光学元件的线性尺寸的任何位置处不超过一个孔。 透过每个孔的光束暴露在感光表面上的离散位置。

公开(公告)号：US5418600A

公开(公告)日：1995-05-23

申请号：US169821

申请日：1993-12-17

申请人： Frank C. Genovese

发明人： Frank C. Genovese

IPC分类号： B65H5/02 ,  F16H7/02 ,  F16H19/06 ,  G03G15/00

CPC分类号： G03G15/757 ,  F16H19/06 ,  F16H7/02 ,  F16H2019/0681

摘要： A conformable drive system for transporting a surface, such as an imaging surface, along a predetermined path of travel. An intermediate drive assembly, including an endless tape loop, operatively associated with a rotational drive source is provided. The endless tape loop is driven by the rotational drive source such that the tape loop, when positioned in frictional contact with the surface to be transported, induces transport movement of the surface. The tape loop includes a nonelastic support layer for preventing the tape loop from stretching, and also includes a frictional contact layer for providing substantial frictional forces between the tape loop and the surface being transported. The configuration of the conformable drive system provides sufficient contact pressure for imparting a substantially constant velocity vector to the transported surface for maintaining substantially constant speed control of the transported surface.

摘要翻译： 用于沿着预定的行进路径传送诸如成像表面的表面的一致的驱动系统。 提供了一种包括与旋转驱动源可操作地相关联的环形带环的中间驱动组件。 环形带环由旋转驱动源驱动，使得带环定位成与被输送表面摩擦接触时，导致表面的运输运动。 带环包括用于防止带环拉伸的非弹性支撑层，并且还包括摩擦接触层，用于在带环与被传送的表面之间提供实质的摩擦力。 适应驱动系统的构造提供了足够的接触压力，以向传送的表面施加基本恒定的速度矢量，以保持输送表面的基本上恒定的速度控制。

公开(公告)号：US5300962A

公开(公告)日：1994-04-05

申请号：US929859

申请日：1992-08-17

申请人： Frank C. Genovese

发明人： Frank C. Genovese

IPC分类号： B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  G01D9/42

CPC分类号： H04N1/047 ,  G02B26/123 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/04729 ,  H04N2201/04789 ,  H04N2201/04791

摘要： A raster output scanner system for multi-color printing provides a plurality of independently-controllable, substantially parallel writing beams. A rotating polygon causes the writing beams to scan simultaneously. The parallel beams are then reflected by a multifacet mirror and redirected to various photoreceptor surfaces. Each writing beam comprises a set of converging sub-beams, the relative intensity of which is adjustable to effect small positional adjustments of the writing beam on the photoreceptor surfaces.

摘要翻译： 用于多色打印的光栅输出扫描器系统提供多个独立可控的基本上平行的写入光束。 旋转的多边形使得写入光束同时扫描。 然后平行光束被多面反射镜反射并重定向到各种感光体表面。 每个写入光束包括一组会聚的子光束，其相对强度是可调节的，以便在感光体表面上实现书写光束的小的位置调整。

公开(公告)号：US5291318A

公开(公告)日：1994-03-01

申请号：US970408

申请日：1992-11-02

申请人： Frank C. Genovese

发明人： Frank C. Genovese

IPC分类号： G02B5/32 ,  G02B26/10 ,  G02B5/18 ,  G02B27/44

CPC分类号： G02B26/106 ,  G02B5/32

摘要： A grating having holographic properties is employed in a pixel clock for a raster-output scanner. A pilot beam, off-axis from the writing beam creating a latent image on the photoreceptor, is focused on the grating. The grating is adapted to direct a portion of the pilot beam to a photodetector in a fixed point location. The holographic properties of the grating ensure that a wave associated with a reflected interference pattern is always directed at the photodetector throughout the scan path of the pilot beam.

摘要翻译： 在光栅输出扫描器的像素时钟中采用具有全息特性的光栅。 来自写入光束离轴的导光束在感光体上产生潜像，聚焦在光栅上。 光栅适于将导频束的一部分引导到固定点位置的光电检测器。 光栅的全息特性确保与反射干涉图案相关联的波形总是在导光束的整个扫描路径处被引导到光电探测器。

公开(公告)号：US5250960A

公开(公告)日：1993-10-05

申请号：US815218

申请日：1991-12-31

申请人： Frank C. Genovese

发明人： Frank C. Genovese

IPC分类号： B41J2/415 ,  G03G15/05 ,  G03G15/32 ,  G06K15/14 ,  H04N1/23 ,  H04N1/29 ,  H04N1/40 ,  G01D15/06

CPC分类号： G03G15/323 ,  G06K15/14 ,  H04N1/295 ,  H04N1/40031

摘要： A method employing multiple pulses per pixel to reproduce an image. A motion detector detects movement of an image receptor relative to a row of reproduction elements. The motion detector generates multiple pulses for each movement of the image receptor corresponding to a pixel dimension. Each pulse from the motion detector enables each reproduction element for a predetermined time.

摘要翻译： 每像素采用多个脉冲以再现图像的方法。 运动检测器检测图像接收器相对于再现元件行的移动。 运动检测器针对与像素尺寸对应的图像接收器的每个运动产生多个脉冲。 来自运动检测器的每个脉冲使每个再现元件达到预定时间。

公开(公告)号：US5208633A

公开(公告)日：1993-05-04

申请号：US812083

申请日：1991-12-23

申请人： Frank C. Genovese

发明人： Frank C. Genovese

IPC分类号： B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  G01B11/00 ,  G03G15/00 ,  G03G15/01 ,  G03G21/00 ,  G03G21/14 ,  G05D3/12 ,  H04N1/29

CPC分类号： G03G15/755

摘要： In an imaging device having a belt supporting image on an image supporting surface and moving along an endless path in a process direction, an exposure device for forming images on the image supporting surface, an arrangement is provided to derive information about belt position with respect to the exposure device. The belt is provided with at least one fiducial opening or target at a belt edge, and a sensor is arranged with respect to the belt and the fiducial opening, to sense illumination directed through the fiducial opening. An illumination source is provided at a fixed position with respect to the exposure device and the sensor to directing illumination to the sensor, when the fiducial opening is aligned with the sensor, including at least two independently detectable illumination sources arranged along a cross process direction. Belt position with respect to the exposure device is then determined from the amount of occlusion of one of the first and second independently detectable illumination sources. Control of belt position may be split between image processing methods and mechanical methods.

摘要翻译： 在具有图像支撑面上的带支撑图像并沿着处理方向沿着环形路径移动的成像装置中，设置有用于在图像支撑表面上形成图像的曝光装置，以获得关于带位置相对于 曝光装置。 带在带边缘处设置有至少一个基准开口或目标，并且传感器相对于带和基准开口布置，以感测通过基准开口引导的照明。 当基准开口与传感器对准时，照明源相对于曝光装置和传感器设置在固定位置，以将照明引导到传感器，包括沿着交叉处理方向布置的至少两个可独立检测的照明源。 然后根据第一和第二独立可检测的照射源之一的遮挡量确定相对于曝光装置的皮带位置。 皮带位置的控制可以在图像处理方法和机械方法之间分离。

公开(公告)号：US4972212A

公开(公告)日：1990-11-20

申请号：US370317

申请日：1989-06-22

申请人： Oscar G. Hauser ,  Robert W. Anderson ,  Lawrence M. Hart ,  Steven B. Bolte ,  Raymond W. Stover ,  Frank C. Genovese

发明人： Oscar G. Hauser ,  Robert W. Anderson ,  Lawrence M. Hart ,  Steven B. Bolte ,  Raymond W. Stover ,  Frank C. Genovese

IPC分类号： B41J2/415 ,  G03G15/32

CPC分类号： B41J2/415 ,  G03G15/323

摘要： In an ionographic device projecting a stream of ions towards a moving imaging surface, modulated in imagewise fashion, one or more control electrodes may be arranged adjacent to the path of the ion stream and between the source of the modulated ion stream and the imaging surface, biased with a voltage preventing previously deposited charge from perturbing the trajectory of subsequently projected ions to limit the amount of ion beam deflection caused by the presence of electrostatic charge patterns on the electroreceptor.

摘要翻译： 在以成像方式调制的移动成像表面上投射离子流的离子照相装置中，可以将一个或多个控制电极布置成与离子流的路径相邻并且在调制的离子流的源和成像表面之间， 用电压偏置，防止先前沉积的电荷扰乱随后投射的离子的轨迹，以限制由电感受器上静电荷图案的存在引起的离子束偏转量。