公开(公告)号：US4746987A

公开(公告)日：1988-05-24

申请号：US865321

申请日：1986-05-21

申请人： James C. Traino ,  Leon C. Williams ,  Kwok-leung Yip ,  J. Terrence Flynn

发明人： James C. Traino ,  Leon C. Williams ,  Kwok-leung Yip ,  J. Terrence Flynn

IPC分类号： G02F1/11 ,  G06K15/12 ,  H04N1/113 ,  H04N1/40 ,  H04H1/04

CPC分类号： H04N1/40043 ,  G06K15/1214 ,  H04N1/40037 ,  H04N1/4005

摘要： A scanner with high intensity source beam, a modulator for modulating the source beam to provide a zero order beam and first order writing beam in response to an image signal input, a polygon for scanning the writing beam across a moving recording member to write images thereon, a sensor in the path of the zero order beam providing a first black beam intensity signal while scanning between pages and a second white beam intensity signal while the writing beam scans an image background area, a circuit for differencing the first and second beam intensity signals from one another to provide a composite intensity signal representing the intensity of the source beam, and a second circuit for differencing the composite beam intensity signal from an intensity setpoint signal to provide a correction signal for adjusting the rf power to the modulator to maintain a substantially constant writing beam intensity.In a second embodiment, the correction signal is determined by a successive approximation register.

摘要翻译： 一种具有高强度源光束的扫描器，用于调制源光束以响应于图像信号输入提供零级光束和一阶写入光束的调制器，用于扫描写入光束跨越移动记录部件以在其上写入图像的多边形 在零光束的路径中的传感器在写入光束扫描图像背景区域时在扫描页面和第二白光束强度信号之间提供第一黑光束强度信号，用于差分第一和第二光束强度信号的电路 提供表示源光束的强度的复合强度信号，以及用于将合成光束强度信号与强度设定点信号进行差分的第二电路，以提供校正信号，用于调整调制器的功率以维持基本上 恒定写入光束强度。 在第二实施例中，校正信号由逐次逼近寄存器确定。

公开(公告)号：US4804975A

公开(公告)日：1989-02-14

申请号：US156685

申请日：1988-02-17

申请人： Kwok-leung Yip

发明人： Kwok-leung Yip

IPC分类号： B41J2/475 ,  B41M5/382 ,  G01D15/10 ,  H04N1/032 ,  H04N1/40

CPC分类号： B41M5/38221 ,  H04N1/032 ,  H04N1/40031 ,  H04N1/40037

摘要： A thermal dye transfer apparatus includes an array of laser diodes which illuminate a dye carrying donor. The donor absorbs heat from laser light and dye transfers by sublimination from the donor to the receiver to form pixels. Light from each diode laser is modulated to have different pixel density levels.

摘要翻译： 热染料转移装置包括照射染料携带供体的激光二极管阵列。 供体从供体吸收热量并通过升华从供体吸收染料转移到接收器以形成像素。 来自每个二极管激光器的光被调制以具有不同的像素密度水平。

公开(公告)号：US4554561A

公开(公告)日：1985-11-19

申请号：US484038

申请日：1983-04-11

申请人： Joseph J. Daniele ,  Kwok-leung Yip

发明人： Joseph J. Daniele ,  Kwok-leung Yip

IPC分类号： G02B26/10 ,  B41J2/44 ,  G02B26/08 ,  G02B26/12 ,  G02F1/03 ,  G02F1/05 ,  G02F1/295 ,  G02F1/315 ,  G06K15/12 ,  G01D9/42

CPC分类号： G06K15/1257 ,  G02B26/08 ,  G02B26/127 ,  G02F1/2955 ,  G02F1/315

摘要： An electro-optic printer of the type having a laser, a modulator for modulating the laser beam in accordance with image signals; an optical system including a rotating polygon for sweeping the modulated beam across the photosensitive drum of a xerographic system to expose the drum and create images thereon, the modulator having a plurality of separately controlled electrode groups effective to modulate portions of the laser beam in accordance with individual lines of image signals to enable multiple image lines to be exposed at once on the photosensitive drum; and a step drive to synchronously step the photosensitive drum in increments equal to the combined width of the lines being processed.In a first alternate embodiment, the modulator is based on a wave guide, and in a second alternate embodiment, the modulator is composed of a series of flexible reflective fingers.

摘要翻译： 一种具有激光器的电光打印机，用于根据图像信号调制激光束的调制器; 一种光学系统，包括旋转多边形，用于扫描经过静电复印系统的感光鼓的调制束以暴露滚筒并在其上产生图像，该调制器具有多个单独控制的电极组，其有效地调制激光束的部分， 单独的图像信号线，以使多个图像线能够立即暴露在感光鼓上; 以及阶跃驱动器，以与被处理线的组合宽度相等的增量同步地步进感光鼓。 在第一替代实施例中，调制器基于波导，并且在第二替代实施例中，调制器由一系列柔性反射指状构成。

公开(公告)号：US4733252A

公开(公告)日：1988-03-22

申请号：US31961

申请日：1987-03-30

申请人： Joseph J. Daniele ,  Kwok-leung Yip

发明人： Joseph J. Daniele ,  Kwok-leung Yip

IPC分类号： G02B26/10 ,  B41J2/44 ,  G06K15/12 ,  H04N1/036 ,  H04N1/113 ,  H04N1/191 ,  H04N1/23 ,  G01D9/42 ,  G01D15/14 ,  H04N1/21

CPC分类号： G06K15/1257 ,  H04N1/036 ,  H04N1/1911 ,  H04N1/1135

摘要： A scanning system with unpolarized laser, a birefringent beam splitter to split the unpolarized beam into dual orthogonally polarized beams, a polarization insensitive unitary dual beam modulator for separately modulating the beams in accordance with discrete image signal inputs, and a control for operating the modulator at optimum acoustic power levels.In an alternate embodiment, a quarter wave plate is inserted in the optical path between laser and beam splitter.

摘要翻译： 具有非偏振激光的扫描系统，用于将非偏振光束分裂为双正交偏振光束的双折射光束分离器，用于根据离散图像信号输入单独调制光束的偏振不敏感单一双光束调制器，以及用于将调制器 最佳声功率级。 在替代实施例中，四分之一波片插入在激光束和分束器之间的光路中。

公开(公告)号：US4591260A

公开(公告)日：1986-05-27

申请号：US647285

申请日：1984-09-04

申请人： Kwok-leung Yip

发明人： Kwok-leung Yip

IPC分类号： G03G15/08 ,  B41J2/44 ,  G02F1/03 ,  G03G15/04 ,  G03G15/043 ,  G03G15/09 ,  H04N1/12 ,  H04N1/23 ,  H04N1/29 ,  G03G15/00

CPC分类号： H04N1/1275 ,  G02F1/0316 ,  G03G15/0914 ,  H04N1/12

摘要： A xerographic system employing uncharged polarizable toner for developing the latent electrostatic images created on the system photoreceptor, with image exposure means having a laser, optical means for converting the laser beam into a sheet-like line of light for exposing the photoreceptor a line at a time, a total internal reflection type modulator means having an array of independently actuated electrodes in the path of the beam effectively to divide the beam into a line of image pixels in accordance with an image signal input; and for solid image areas, plural adjoining electrodes being actuated concurrently to provide simultaneously side by side beams which destructively interfere with one another and create nulls between adjoining pixels thereby enhancing development of solid image areas by said uncharged toner.

摘要翻译： 一种静电复印系统，其使用不带电的可极化调色剂来显影在系统感光体上产生的静电潜像，具有激光的图像曝光装置，用于将激光束转换成片状光线的光学装置，用于将感光体在 具有根据图像信号输入将光束划分成一行图像像素的光束路径中具有独立致动电极阵列的全内反射型调制器装置; 并且对于固体图像区域，多个邻接的电极同时被致动以同时提供相互干扰的并排的光束，并且在相邻像素之间产生零点，从而通过所述不带电的调色剂增强固体图像区域的显影。

公开(公告)号：US4561023A

公开(公告)日：1985-12-24

申请号：US523983

申请日：1983-08-16

申请人： Kwok-leung Yip ,  Martin E. Banton

发明人： Kwok-leung Yip ,  Martin E. Banton

IPC分类号： G02B26/08 ,  G02B26/10 ,  H04N1/113 ,  H04N1/04

CPC分类号： G02B26/0816 ,  G02B26/10

摘要： A micro-deflector comprised of one or more flexible reflector fingers athwart the path of a beam of high intensity light in a raster scanner, the fingers deflecting on the application of a bending potential thereto to guide the light impinging thereagainst along a different path, together with means to speed up restoration of the fingers to an undeflected quiescent position following removal of the bending potential through the application of a dampening potential to the fingers as the fingers approach the undeflected position.

摘要翻译： 微型偏转器由一个或多个柔性反射器指状件构成，在光栅扫描器中靠近高强度光束的路径，手指在施加弯曲电位时偏转，以将沿着不同路径撞击的光引导到一起 通过在手指接近未偏转位置时通过对手指施加阻尼电位来去除弯曲电位之后，手段将手指恢复到未偏转的静止位置。

公开(公告)号：US5369499A

公开(公告)日：1994-11-29

申请号：US790912

申请日：1991-11-13

申请人： Kwok-leung Yip

发明人： Kwok-leung Yip

IPC分类号： H04N5/76 ,  G06T5/00 ,  H04N1/407 ,  H04N5/91 ,  H04N1/00 ,  H04N1/40 ,  H04N5/84

CPC分类号： H04N1/4078

摘要： A technique for calibrating a cathode ray tube multiformat camera and a video monitor. A video image is corrected on a pixel-by-pixel basis and a gray scale is produced on a photosensitive medium, such as film, and on a monitor with uniform quantization in perceived lightness (i.e., perceived lightness or gray shade varies linearly with digital image code value). Consequently, there is no loss of small-signal and strong-signal structures (detail), and all the image information is recorded on film and clearly displayed on the monitor.

摘要翻译： 用于校准阴极射线管多格式相机和视频监视器的技术。 视频图像在逐像素的基础上进行校正，并且在感光介质（例如胶片）上产生灰度，并且在感知亮度中具有均匀量化的监视器（即，感知亮度或灰度阴影随数字线性变化 图像代码值）。 因此，没有小信号和强信号结构（细节）的损失，并且所有图像信息被记录在电影上并且清晰地显示在监视器上。

公开(公告)号：US5196867A

公开(公告)日：1993-03-23

申请号：US681792

申请日：1991-04-08

申请人： Nea-Yea Woo ,  Kwok-leung Yip

发明人： Nea-Yea Woo ,  Kwok-leung Yip

IPC分类号： B41J2/44 ,  G06K15/12

CPC分类号： G06K15/128 ,  G06K15/1204

摘要： The dynamic range of a continuous tone laser printer is extended by directly modulating a diode laser while simultaneously modulating the optical output of the diode laser with an acousto-optic modulator. The digital image value is input to two look-up tables (LUTs) that convert the image value to two digital words; one to set the power level of the diode laser, and the other to set the diffraction efficiency of the acousto-optic modulator (AOM). The first look-up table is constructed from the performance characteristics of the diode laser, and the second look-up table is constructed from the performance characteristics of the AOM. The look-up table digital outputs are applied to respective digital to analog converters whose analog outputs respectively drive a voltage to current driver for the diode laser and a radio frequency dirver for the AOM. The resulting power of the writing laser beam is a linear function of the input image value.

摘要翻译： 通过直接调制二极管激光器同时用声光调制器调制二极管激光器的光输出来延长连续色调激光打印机的动态范围。 将数字图像值输入到将图像值转换为两个数字字的两个查找表（LUT）; 一个设置二极管激光器的功率电平，另一个设置声光调制器（AOM）的衍射效率。 第一个查找表由二极管激光器的性能特性构成，第二个查找表由AOM的性能特征构成。 查找表数字输出被应用于各自的数模转换器，其模拟输出分别驱动用于二极管激光器的电流驱动器的电压和用于AOM的射频转发器。 写入激光束的最终功率是输入图像值的线性函数。

公开(公告)号：US4639073A

公开(公告)日：1987-01-27

申请号：US590922

申请日：1984-03-19

申请人： Kwok-leung Yip ,  Mehdi N. Araghi ,  Joseph J. Daniele ,  Martin E. Banton ,  Charles J. Kramer ,  Joachim A. Ritter

发明人： Kwok-leung Yip ,  Mehdi N. Araghi ,  Joseph J. Daniele ,  Martin E. Banton ,  Charles J. Kramer ,  Joachim A. Ritter

IPC分类号： B41J2/44 ,  G02B26/12 ,  G02F1/315 ,  G03G15/04 ,  G06K15/12 ,  H04N1/036 ,  H04N1/113 ,  H04N1/23 ,  G02B26/10 ,  H04N1/04

CPC分类号： G06K15/1219 ,  G02B26/127 ,  G02F1/315 ,  H04N1/036

摘要： A raster output scanner having a recording member, a laser, a total internal reflection type modulator having an array of independently addressable electrodes, optical means cooperable with the laser to provide a sheetlike beam of high intensity radiation at the modulator, the array of electrodes being pulsed in succession with each image pixel to provide wave after wave of imaging or non-imaging beams, a scanning polygon for scanning the imaging beams from the modulator across the recording member line by line, and means for pulsing the modulator electrodes at a speed equal to the speed of the scanning polygon and in a direction opposite to the polygon scanning direction to obviate image blur.

摘要翻译： 一种光栅输出扫描器，具有记录元件，激光器，具有独立可寻址电极阵列的全内反射型调制器，与激光器配合的光学元件，以在调制器处提供高强度辐射的片状光束，电极阵列为 与每个图像像素相继脉冲以提供成像波束或非成像光束，用于逐行扫描来自调制器的成像光束的扫描多边形，以及用于以相同的速度脉冲调制器电极的装置 到扫描多边形的速度并且在与多边形扫描方向相反的方向上以消除图像模糊。

公开(公告)号：US5039854A

公开(公告)日：1991-08-13

申请号：US520294

申请日：1990-05-07

申请人： Kwok-leung Yip ,  John C. Boutet

发明人： Kwok-leung Yip ,  John C. Boutet

IPC分类号： G02B6/00 ,  G03B42/02 ,  H04N1/028 ,  H04N1/113

CPC分类号： H04N1/0281 ,  G02B6/00

摘要： For use in an image scanner, a highly efficient multistage fluorescent radiation collector collects radiation emitted, reflected, or transmitted from an image storage medium. A first elongated light pipe member has a first fluorescent dye which absorbs radiation from the storage medium and emits radiation of another wavelength. A second elongated light pipe member located adjacent to but optically isolated from the first member has a second fluorescent dye which absorbs emitted radiation escaping from the first member and which emits radiation of a third wavelength. Preferably, a third elongated light pipe member located adjacent to but optically isolated from the second member has a third fluorescent dye which absorbs emitted radiation escaping from the second member and which emits radiation of a fourth wavelength. Much of the radiation emitted by the first, second, and third dyes is channelled along the respective first, second, and third light pipe members to radiation sensors at the end(s) of the members.

摘要翻译： 为了在图像扫描器中使用，高效率的多级荧光辐射收集器收集从图像存储介质发射，反射或传输的辐射。 第一细长的光管部件具有第一荧光染料，其吸收来自存储介质的辐射并发射另一波长的辐射。 与第一构件相邻但与光隔离的第二细长光管构件具有第二荧光染料，其吸收从第一构件逸出的发射的辐射并且发射第三波长的辐射。 优选地，与第二构件相邻但与光隔离的第三细长光管构件具有第三荧光染料，其吸收从第二构件逸出的发射的辐射并且发射第四波长的辐射。 由第一，第二和第三染料发射的大部分辐射沿着相应的第一，第二和第三光管部件引导到部件端部处的辐射传感器。