公开(公告)号：US4982233A

公开(公告)日：1991-01-01

申请号：US433249

申请日：1989-11-08

申请人： Richard F. Lehman ,  James D. Rees

发明人： Richard F. Lehman ,  James D. Rees

IPC分类号： G03G21/00 ,  G03B27/52 ,  G03G15/04 ,  G03G15/043

CPC分类号： G03G15/04

摘要： A sensor array is positioned in the optical scanning system of a copier so as to be able to periodically provide a measurement of the degree of image degradation present in the system due to contamination of the optical system components. The sensor array is adapted to measure the modulation transfer frequency of a bar chart which is exposed in the optical system. The measured value of MTF is compared to a predetermined value of MTF representing a uncontaminated measurement at the bar chart. When the comparison indicates that the measured MTF is below a minimum acceptable threshold value, a display is activated to alert an operator that an optic system cleaning operation is required.

摘要翻译： 传感器阵列位于复印机的光学扫描系统中，以便能够周期性地提供由于光学系统部件的污染而在系统中存在的图像劣化程度的测量。 传感器阵列适于测量在光学系统中暴露的条形图的调制传递频率。 将MTF的测量值与条形图上的未受污染测量的MTF的预定值进行比较。 当比较表明所测量的MTF低于最小可接受阈值时，显示器被激活以提示操作者需要进行光学系统清洁操作。

公开(公告)号：US5260718A

公开(公告)日：1993-11-09

申请号：US816782

申请日：1992-01-02

申请人： Heiko Rommelmann ,  James D. Rees ,  Richard F. Lehman ,  David D. Hoesly ,  Joseph F. Stephany ,  Gary S. Schwarz

发明人： Heiko Rommelmann ,  James D. Rees ,  Richard F. Lehman ,  David D. Hoesly ,  Joseph F. Stephany ,  Gary S. Schwarz

IPC分类号： B41J2/465 ,  G03G15/22 ,  G06K15/12 ,  H04N1/193 ,  G01D15/14 ,  G03G15/18

CPC分类号： G06K15/1242 ,  B41J2/465 ,  G03G15/04045 ,  G03G15/221 ,  H04N1/193

摘要： A xerographic printer especially suitable for printing copies of oversized original documents is enabled by staggering a plurality of image bars in optical alignment with a linear projection means such as gradient index lens arrays which are tilted at a preferred angle. The image bars are selectively addressed in response to digitized bit-mapped data inputs representing the document information. The modulated light outputs from the bars are transmitted as focused lines on the surface of the photoreceptor. The printer includes illumination lamps and a lamp aperture which parallels the staggered image bars. Further, a multi-function copier/printer is realized by combining a variation of the xerographic printer with a conventional imaging system for copying a document.

摘要翻译： 特别适用于打印超大尺寸原始文档副本的静电印刷打印机可以通过与诸如以优选角度倾斜的梯度折射率透镜阵列的线性投影装置进行光学对准来交错多个图像棒来实现。 响应于表示文档信息的数字化位映射数据输入，选择性地寻址图像条。 来自棒的调制光输出作为聚焦线在感光体的表面上传输。 打印机包括照明灯和与交错图像条平行的灯孔。 此外，通过将静电印刷机的变体与用于复印文件的常规成像系统组合来实现多功能复印机/打印机。

公开(公告)号：US4967265A

公开(公告)日：1990-10-30

申请号：US332821

申请日：1989-04-04

申请人： James D. Rees ,  Richard F. Lehman ,  Kenneth R. Ossman

发明人： James D. Rees ,  Richard F. Lehman ,  Kenneth R. Ossman

IPC分类号： G03G15/01 ,  H04N1/46 ,  H04N1/48 ,  H04N1/50 ,  H04N1/60

CPC分类号： G03G15/01 ,  H04N1/508 ,  H04N1/60

摘要： A color correction system for a color copier is enabled by means of a low resolution RIS unit attached to a light/lens scan system which creates an electronic raster image simultaneously with formation of a color latent image. The RIS output signals are used to modulate the output of a ROS unit which exposes the color latent image to a modulated color correction pattern. Color developer units are enabled to successively develop each color.

摘要翻译： 用于彩色复印机的颜色校正系统通过附加到光/透镜扫描系统的低分辨率RIS单元来实现，该系统在形成彩色潜像的同时产生电子光栅图像。 RIS输出信号用于调制ROS单元的输出，该ROS单元将彩色潜像曝光到调制色彩校正图案。 彩色显影单元能够连续显色。

公开(公告)号：US4118122A

公开(公告)日：1978-10-03

申请号：US766465

申请日：1977-02-07

申请人： James D. Rees ,  Richard F. Lehman

发明人： James D. Rees ,  Richard F. Lehman

IPC分类号： G03G21/04 ,  G03B27/32 ,  B42D15/00

CPC分类号： G03G21/043 ,  Y10S283/902

摘要： Techniques to render documents and like objects uncopyable by photocopy means. Illumination spectral composition, object background color, and photoreceptor sensitivity are appropriately combined such that the photoreceptor perceives no object contrast. The result may be either a blackout or a whiteout of the object information.

摘要翻译： 通过复印手段来呈现文件和类似对象无法复制的技术。 适当地组合照明光谱组成，对象背景颜色和感光器感光度，使得感光体不感觉物体对比度。 结果可能是对象信息的中断或白化。

公开(公告)号：US4519703A

公开(公告)日：1985-05-28

申请号：US514372

申请日：1983-07-15

申请人： Richard F. Lehman ,  Roland W. Porth ,  Lawrence J. Mason

发明人： Richard F. Lehman ,  Roland W. Porth ,  Lawrence J. Mason

IPC分类号： G03B27/54 ,  G03G15/04 ,  G03G15/043 ,  G03B27/72

CPC分类号： G03B27/542 ,  G03G15/04036 ,  G03G15/0435

摘要： A selective color copyability illuminator includes a pair of lamps having complementary spectral emission. The ratio of the lamp outputs are adjustable to enhance a first color of an original to be copied while suppressing the second color. The power input to the lamps is also continually adjustable to maintain a desired exposure level at an imaging plane. In a preferred embodiment, a dichroic reflector is utilized with each lamp to enhance system efficiency.

摘要翻译： 选择性彩色可复制照明器包括具有互补光谱发射的一对灯。 灯输出的比率是可调节的，以便在抑制第二颜色的同时增强要复制的原稿的第一颜色。 输入到灯的功率也是连续可调的，以便在成像平面上保持期望的曝光水平。 在一个优选实施例中，与每个灯一起使用二向色反射器以提高系统效率。

公开(公告)号：US4272188A

公开(公告)日：1981-06-09

申请号：US77237

申请日：1979-09-19

申请人： Richard F. Lehman ,  Stephen C. Corona

发明人： Richard F. Lehman ,  Stephen C. Corona

IPC分类号： G03B15/05 ,  G03B27/72 ,  H05B41/32

CPC分类号： H05B41/325

摘要： An automatic exposure control system for a full-frame copier controls the illumination of a flash lamp in response to the reflectivity of a document to be reproduced. A photodetector senses exposure at the wall of a light housing and after sufficient exposure is reached, the light source is turned off (quenched). A compensation circuit anticipates the total energy emitted after quench (representing an over exposure potential) and terminates the light source energizing pulse so as to produce only desired exposure without over-exposure error.

摘要翻译： 全帧复印机的自动曝光控制系统响应于要再现的文档的反射率来控制闪光灯的照明。 光电检测器感测在灯壳的壁处的曝光，并且在达到充分的曝光之后，光源被关闭（淬火）。 补偿电路预期淬火后（表示过度曝光电位）发出的总能量并终止光源激励脉冲，从而仅产生期望的曝光而不产生过度曝光误差。

公开(公告)号：US4082450A

公开(公告)日：1978-04-04

申请号：US634007

申请日：1975-11-21

申请人： Richard F. Lehman

发明人： Richard F. Lehman

IPC分类号： G03G15/04 ,  G03B27/76

CPC分类号： G03G15/04027

摘要： Apparatus for providing a structured radiation pattern in the charge distribution of a photoreceptor in electrographic reproduction machines. The apparatus is comprised of a source of radiation, a plurality of apertures and a lens system for focusing the radiation transmitted by the apertures onto a charged photoreceptor. The position of the apparatus relative to the photoreceptor can provide a method for control of the structure of the photoreceptor charge. The photoreceptor charge structure can be further controlled by providing preselected patterns for radiation transmitted by the apertures. The charge distribution of the photoreceptor can be structured to form a line or a dot pattern.

公开(公告)号：US06606171B1

公开(公告)日：2003-08-12

申请号：US08948108

申请日：1997-10-09

申请人： Jeffrey D. Renk ,  Richard F. Lehman ,  Mark R. Fernald ,  Calvin M. Winey

发明人： Jeffrey D. Renk ,  Richard F. Lehman ,  Mark R. Fernald ,  Calvin M. Winey

IPC分类号： H04N104

CPC分类号： H04N1/00013 ,  H04N1/00002 ,  H04N1/00037 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00087 ,  H04N1/02815 ,  H04N1/0284 ,  H04N1/02885 ,  H04N1/121 ,  H04N1/191 ,  H04N1/40056 ,  H04N1/40068 ,  H04N1/401 ,  H04N2201/0412

摘要： A digitizing scanner particularly for scanning transparent films such as X-rays provides an improved illuminator for transmitting light through the film. The illuminator defines a line array of a plurality of individually calibrated and controlled LEDs. The LEDs are calibrated by determining their relative points of projection on a CCD camera array. The camera array scans the LEDs and adjusts them individually to produce a predetermined illumination pattern from the group. The adjustment occurs over a plurality of cycles that address cross-talk between LEDs in the array. The camera includes anti-reflection elements to minimize bounce-back of image light and noise suppression circuitry to reduce low-level signal noise. A central processing unit, interconnected with the camera assembly includes a pixel averager to reduce the inherent resolution of the CCD to a desired level and to attenuate further noise. The scanner can include an illuminator for illuminating a scannable opaque bar-code strip and size-measurement circuitry for determining the relative size and location of the scanned image.

摘要翻译： 特别用于扫描诸如X射线的透明膜的数字化扫描器提供了用于透过膜的光的改进的照明器。 照明器定义多个单独校准和控制的LED的线阵列。 通过确定它们在CCD相机阵列上的相对投影点来校准LED。 相机阵列扫描LED并分别调整它们以从组中产生预定的照明图案。 调整发生在解决阵列中的LED之间的串扰的多个周期中。 相机包括防反射元件，以最小化图像光和噪声抑制电路的反弹，以降低低电平信号噪声。 与相机组件相互连接的中央处理单元包括像素平均器，以将CCD的固有分辨率降低到期望的水平并衰减进一步的噪声。 扫描器可以包括用于照亮可扫描的不透明条形码条的照明器和用于确定扫描图像的相对尺寸和位置的尺寸测量电路。

公开(公告)号：US5155541A

公开(公告)日：1992-10-13

申请号：US736375

申请日：1991-07-26

申请人： Robert P. Loce ,  Richard F. Lehman

发明人： Robert P. Loce ,  Richard F. Lehman

IPC分类号： G03G15/01

CPC分类号： G03G15/0157 ,  G03G15/0163 ,  G03G2215/0495

摘要： Method and apparatus for printing toner images in black and at least two highlighting colors in a single pass of the imaging surface through the processing areas of the printing apparatus. Imaging and development techniques of color photography and tri-level xerography are combined to produce images with black and two colors wherein the two highlighting colors are developed with only one color toner. A single imaging step forms a four level charge pattern on a charge retentive surface followed by development of two of the image levels using tri-level imaging techniques. Uniform exposure of the imaging surface, similar to that used to color photography techniques precedes development of the last image. The uniform exposure modifies the last developed image level and the background charge level allowing development of the last image with a single toner.

摘要翻译： 通过打印设备的处理区域在成像表面的单次通过中打印黑色调色剂图像和至少两个突出显示颜色的方法和设备。 彩色摄影和三级静电复印的成像和开发技术被组合以产生具有黑色和两种颜色的图像，其中两种高亮颜色仅用一种彩色调色剂显影。 单个成像步骤在电荷保持性表面上形成四级电荷图案，随后使用三级成像技术显影两个图像水平。 成像表面的均匀曝光类似于彩色摄影技术的曝光先于最后一幅图像的开发。 均匀曝光修改最后显影的图像水平和背景电荷水平，从而允许使用单个调色剂开发最后一张图像。

公开(公告)号：US6023348A

公开(公告)日：2000-02-08

申请号：US324898

申请日：1994-10-18

申请人： Thomas W. Bosse ,  Mark W. Magee ,  Richard F. Lehman ,  Calvin Winey, III

发明人： Thomas W. Bosse ,  Mark W. Magee ,  Richard F. Lehman ,  Calvin Winey, III

IPC分类号： H04N1/06 ,  H04N1/08 ,  H04N1/04

CPC分类号： H04N1/0678 ,  H04N1/0657 ,  H04N1/08

摘要： A dual drum rotary image scanner has a headstock and a tailstock between which may be mounted drums of different diameter. The tailstock has substantially annular surfaces which contact corresponding surfaces on the different diameter drums. The different drums, when held in the scanner, each create a different separation between the headstock and tailstock. These different separations are detected by photodetectors, the outputs of which are received by a system controller. The controller uses the photodetector signals to control motors that position the scanning head and the transmittance illuminator relative to the surface of the particular drum mounted in the scanner. The motors turn pinions which, in turn, move racks to which are attached the scanning head and the transmittance illuminator, respectively. The movement of the scanning head also results in the modification of the optical path within the optics box of the scanner. In a first position, the light from the scanning head follows a first optical path which includes a movable mirror in a first angular orientation. As the scanning head is moved to a second position, the angular orientation of the movable mirror is changed, and the light from the scanning head follows a second optical path which includes the movable mirror in its new orientation. Support arms are also provided which adjust to support the different diameter drums during loading, and mounting surfaces between the drum being mounted and the headstock and tailstock are shaped to allow the drum to be lifted off the supports as the headstock and tailstock are brought together.

摘要翻译： 双鼓旋转图像扫描器具有主轴箱和尾座，在其之间可以安装不同直径的滚筒。 尾架具有基本上环形的表面，其接触不同直径的鼓上的相应表面。 不同的鼓，当保持在扫描仪中时，都会在头架和尾座之间产生不同的分隔。 这些不同的分离由光电检测器检测到，其输出由系统控制器接收。 控制器使用光电检测器信号来控制将扫描头和透射照明器相对于安装在扫描器中的特定鼓的表面定位的电动机。 电动机转动小齿轮，这些小齿轮又分别移动附接到扫描头和透射照明器的机架。 扫描头的移动也导致扫描仪的光学盒内的光路的修改。 在第一位置，来自扫描头的光线遵循第一光路，其包括处于第一角度取向的可移动反射镜。 当扫描头移动到第二位置时，可移动反射镜的角度取向被改变，并且来自扫描头的光沿着包括可移动镜在其新取向的第二光路。 还提供支撑臂，其调节以在装载期间支撑不同直径的鼓，并且安装在安装的滚筒与主轴箱和尾座之间的安装表面成形为当主轴箱和尾座组合在一起时允许滚筒从支架上提离。