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公开(公告)号：US5394223A
公开(公告)日：1995-02-28
申请号：US930642
申请日：1992-08-17
申请人： Steven C. Hart , Fred F. Hubble, III , Thomas J. Hammond , Jeffrey J. Folkins , James P. Martin
发明人： Steven C. Hart , Fred F. Hubble, III , Thomas J. Hammond , Jeffrey J. Folkins , James P. Martin
CPC分类号： G03G15/0152 , G03G15/0163
摘要： An apparatus for positional tracking a moving photoconductive belt and adjusting an imager in an electrophotographic printing machine to correct for alignment errors when forming a composite image. Registration errors are sensed by developing an appropriate set of target marks, detecting the target marks, and controlling the position of the imager.
摘要翻译： 一种用于位置跟踪移动光电导带并调整电子照相印刷机中的成像器的装置，以校正形成复合图像时的对准误差。 通过开发适当的目标标记集，检测目标标记和控制成像器的位置来感测注册错误。
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2.发明授权Method and apparatus for registration of sequential images in a single pass, multi-LED printbar printer 失效用于在单程，多LED打印机打印机中注册顺序图像的方法和装置
公开(公告)号：US5272493A
公开(公告)日：1993-12-21
申请号：US862150
申请日：1992-04-02
IPC分类号： B41J2/41 , B41J2/44 , B41J2/45 , B41J2/455 , G03G15/01 , G03G21/00 , G03G21/14 , G05D3/12 , H04N1/047 , H04N1/12 , H04N1/193 , H04N1/29 , G01D15/14 , G01D9/42 , G01D15/06
CPC分类号： H04N1/0473 , G03G2215/017 , H04N1/12 , H04N1/193 , H04N2201/04705 , H04N2201/04755 , H04N2201/04786
摘要： A precision belt hole sensor and associated conditioning circuitry provides precise trigger signals that enable synchronous printing in a color printer. An image bar recording system, which, in a preferred embodiment, utilizes a plurality of LED image bars, forms a plurality of latent images on a moving photoreceptor which may subsequently be developed in different colors. A pair of sensors associated with each printbar views illuminated pixels at the end of a printbar, through a pair of oppositely aligned photoreceptor holes. The signals detected by the sensor are amplified and processed to provide inputs to a comparitor circuit which generates an output signal at a time which precisely defines the passage of the trailing edge of the hole, past the sensors. The signal from the comparitor is used to accomplish skew registration of the printbar and to provide sync signals to enable precise formation of the leading edge of the associated image frame.
摘要翻译： 精密带孔传感器和相关的调理电路提供精确的触发信号，可在彩色打印机中进行同步打印。 在优选实施例中，利用多个LED图像条的图像条记录系统在可以随后以不同颜色显影的移动感光体上形成多个潜像。 与每个打印机相关联的一对传感器通过一对相对对准的感光体孔来观察在打印头端部处的发光像素。 由传感器检测到的信号被放大和处理，以向比较器电路提供输入，该比较器电路在精确地限定孔的后缘通过传感器的时间产生输出信号。 来自比较器的信号用于实现打印条的偏斜配准，并且提供同步信号以能够精确地形成相关图像帧的前沿。
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3.发明授权公开(公告)号：US06470021B1
公开(公告)日：2002-10-22
申请号：US09172101
申请日：1998-10-05
申请人： Bernard N. Daines , Greg W. Davis , Thomas J. Hammond , David K. Couch , Christopher A. Schalick
发明人： Bernard N. Daines , Greg W. Davis , Thomas J. Hammond , David K. Couch , Christopher A. Schalick
IPC分类号： H04L1256
CPC分类号： H04L49/3072 , H04L49/103 , H04L49/351
摘要： A packet switch includes a multiple of bidirectional ports that are each connected by dedicated signal paths to a multiple of memory subsystems that in turn are connected to shared memory within the switch. The signal path from each port carries a fragment of a data stream between the port and each memory subsystem. The ports send and receive data stream fragments in parallel from the memory subsystems. This parallel action reduces the bandwidth required of a memory subsystem by dividing the port's data stream among the multiple memory subsystems. In storing data for forwarding to another port, each memory subsystem selects on a time division basis in parallel the data stream fragments from the same port and stores them in memory. In retrieving data from memory for a port, each memory subsystem selects on a time division basis in parallel the same port to receive the data stream fragments read from memory. The bit width of the signal paths between the ports and memory subsystems is reduced by sending smaller, individual data stream fragments between ports and memory subsystems and sending larger, aggregate data stream fragments between memory subsystems and memory. Within each memory subsystem are modules that combine individual data stream fragments into aggregate data stream fragments for storage in memory and modules that split aggregate data stream fragments read from memory into individual data stream fragments for transmission to ports.
摘要翻译： 分组交换机包括多个双向端口，每个双向端口通过专用信号路径连接到存储器子系统的多个，其又连接到交换机内的共享存储器。 来自每个端口的信号路径携带端口和每个存储器子系统之间的数据流的片段。 端口从存储器子系统并行发送和接收数据流片段。 这种并行操作通过在多个存储器子系统之间划分端口的数据流来减少存储器子系统所需的带宽。 在存储用于转发到另一端口的数据时，每个存储器子系统并行地选择来自同一端口的数据流片段并且将它们存储在存储器中。 在从端口的存储器检索数据时，每个存储器子系统并行地选择同一端口的时分，以接收从存储器读取的数据流片段。 通过在端口和存储器子系统之间发送较小的单个数据流片段，并在存储器子系统和存储器之间发送更大的聚合数据流片段来减少端口和存储器子系统之间的信号路径的位宽度。 在每个存储器子系统内是将各个数据流片段组合成用于存储在存储器中的聚合数据流片段的模块，以及将从存储器读取的聚合数据流片段分割成用于传输到端口的各个数据流片段的模块。
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4.发明授权Mechanism and method for controlling the temperature and light output of a fluorescent lamp 失效用于控制荧光灯的温度和光输出的机构和方法
公开(公告)号：US4529912A
公开(公告)日：1985-07-16
申请号：US478748
申请日：1983-03-25
CPC分类号： H05B41/3922
摘要： The phosphor light output of a fluorescent lamp is controlled and optimized. The phosphor light output of the lamp corresponds to a particular level of either the vapor mercury or rare fill gas contained within the lamp envelope. This gas emission level is initially determined for a given system; a monitoring circuit thereafter detects any deviation from this level, generates a signal and sends it to a controller. The controller adjusts the operation of a mercury cold spot temperature-regulating device causing the cold spot temperature to increase or decrease until the optimum temperature and hence lamp phosphor light output is reestablished.
摘要翻译： 荧光灯的荧光体光输出被控制和优化。 灯的荧光体光输出对应于灯泡内包含的蒸气汞或稀有填充气体的特定水平。 该气体排放水平最初是针对给定的系统确定的; 监控电路此后检测与该电平的任何偏差，产生信号并将其发送到控制器。 控制器调节水银冷点温度调节装置的操作，使冷点温度升高或降低直到最佳温度，从而重新建立灯荧光体光输出。
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5.再颁专利Illumination system utilizing two opposing DC lamps with an optimum barrel-shaped slit 失效照明系统利用两个相对的直流灯具有最佳的桶形狭缝
公开(公告)号：USRE31499E
公开(公告)日：1984-01-17
申请号：US87174
申请日：1979-10-22
IPC分类号： G03B27/54
CPC分类号： G03B27/542
摘要： .[.A symmetrical light intensity distribution profile is achieved by placing a pair of similar asymmetrical linear DC gas discharge lamps in parallel position but opposed in polarity. The individual asymmetrical distributions of the lamps combine in a symmetrical total intensity distribution. A desired "butterfly" or other intensity distribution profile can be achieved..]. .Iadd.The invention relates to an illumination system which provides nonuniform illumination along an object plane in the dimension of an illumination source which includes two linear lamps. The lamps have their anodes and cathodes connected in reverse fashion relative to each other; each lamp provides its own asymmetrical light output distribution pattern but the resultant output of both lamps is a symmetrical pattern which provides the characteristic nonuniform illumination on the object plane. .Iaddend.
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6.发明授权Illumination system utilizing two opposing DC lamps with an optimum barrel-shaped slit 失效照明系统利用两个相对的直流灯具有最佳的桶形狭缝
公开(公告)号：US4086010A
公开(公告)日：1978-04-25
申请号：US737299
申请日：1976-11-01
IPC分类号： G03B27/54
CPC分类号： G03B27/542
摘要： A symmetrical light intensity distribution profile is achieved by placing a pair of similar asymmetrical linear DC gas discharge lamps in parallel position but opposed in polarity. The individual asymmetrical distributions of the lamps combine in a symmetrical total intensity distribution. A desired "butterfly" or other intensity distribution profile can be achieved.
摘要翻译： 通过将一对相似的非对称线性直流气体放电灯置于平行位置但极性相反的方式实现对称的光强分布曲线。 灯的单个不对称分布以对称的总强度分布组合。 可以实现期望的“蝴蝶”或其他强度分布轮廓。
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7.发明授权Electrophotographic marking using an exposure station having a small waterfront requirement 有权使用具有小海滨要求的曝光站的电子照相打标公开(公告)号：US06219075B1
公开(公告)日：2001-04-17
申请号：US09198548
申请日：1998-11-24
申请人： Thomas J. Hammond , James D. Rees
发明人： Thomas J. Hammond , James D. Rees
IPC分类号： B41J2385
CPC分类号： B41J2/451
摘要： A light emitting diode based exposure station (and electrophotographic marking machines that use such exposure stations) that requires only a small amount of photoreceptor waterfront (space). The small waterfront requirement is achieved using a gradient index lens array that transmits focused light onto the photoreceptor with a total conjugate that is sufficient to permit the widest part of the light emitting diode based exposure station to be displaced sufficiently far from the photoreceptor that other printing machine devices can be disposed between the widest part of the exposure station and the photoreceptor. The increased total conjugate is achieved using a gradient index lens array having longer rods and/or wider rods.
摘要翻译： 基于发光二极管的曝光站（和使用这种曝光站的电子照相打标机），其仅需要少量的感光体海滨（空间）。 使用梯度折射率透镜阵列实现小的海滨要求，所述梯度折射率透镜阵列将聚焦光传播到感光体上，总共轭足以允许基于发光二极管的曝光站的最宽部分足够远离其它印刷的感光体 机器装置可以设置在曝光站的最宽部分和感光体之间。 使用具有较长棒和/或更宽棒的梯度折射率透镜阵列实现增加的总共轭。
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公开(公告)号：US5859658A
公开(公告)日：1999-01-12
申请号：US545477
申请日：1995-10-19
申请人： Thomas J. Hammond
发明人： Thomas J. Hammond
CPC分类号： H05B33/0851 , G06K15/1247
摘要： An apparatus for compensating LED printbars, and printers which use LED printbars, for aging. Changes in the slopes of the forward voltage drop verses forward current characteristics (the I-V characteristics) of the LEDs of the LED printbar are determined. The drive currents of the LEDs are then changed as a function of the changes in the slopes so as to compensate for changes in the LED light outputs.
摘要翻译： 用于补偿LED打印条的设备，以及使用LED打印棒的打印机进行老化。 确定正向压降斜率与LED打印条LED的正向电流特性（I-V特性）的变化。 然后，LED的驱动电流随着斜率的变化而变化，以便补偿LED光输出的变化。
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公开(公告)号：US5229787A
公开(公告)日：1993-07-20
申请号：US948565
申请日：1992-09-23
CPC分类号： H04N1/506 , G03G15/0152 , G03G15/0163
摘要： The present invention relates to a color printer which forms multiple latent images on the surface of a belt type photoreceptor in a single pass. The invention enables the placement of imaging stations on both a tensioned and non-tensioned side of the belt. On the non-tensioned, an asynchronous line at a time printer such as an LED print bar is used to form the latent image in response to video data signals. On the tensioned side of the belt, either synchronous type imagers, such as laser ROSs or asynchronous imagers such as LED print bars may be located to form the latent image. The leading edges of each image frame are registered according to known methods. Each scan line within an image frame is registered by comparing the belt speed beneath each of the imagers and generating a correction signal to the asynchronous print bar. Since the print bar operates asynchronously, it is possible to vary the pulsed line write time so as to register each of the scan lines formed by the print bar with the scan line being formed by the imagers at the tensioned side of the belt.
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公开(公告)号：US5081492A
公开(公告)日：1992-01-14
申请号：US626596
申请日：1990-12-12
申请人： Thomas J. Hammond
发明人： Thomas J. Hammond
IPC分类号： G03B27/72 , G03B27/52 , G03G15/00 , G03G15/04 , G03G15/043
CPC分类号： G03G15/5037 , G03B27/526 , G03G15/0435
摘要： An exposure control system for a document copier is enabled by positioning a segmented variable reflectance mirror along the optical imaging path. The mirror segments incorporate a material whose transmission changes in response to applied voltage signals, the preferred material being an electrochromic material. In a first embodiment a white reference strip along the platen surface is exposed and the charge levels along discrete areas of the photoreceptor are measured by an electrometer with a plurality of probe segments. Outputs from each probe segment are processed in a control circuit and a signal sent to an appropriate mirror segment to increase or decrease reflectance to enable a corresponding decrease or increase, respectively, of the charge level, at the corresponding discrete areas of the photoreceptor illuminated by the mirror segments.
摘要翻译： 通过沿光学成像路径定位分段的可变反射镜来实现文件复印机的曝光控制系统。 反射镜段包含其传输响应于所施加的电压信号而变化的材料，优选的材料是电致变色材料。 在第一实施例中，沿着压板表面的白色参考条被暴露，并且通过具有多个探针段的静电计来测量沿感光体的离散区域的电荷水平。 来自每个探测段的输出在控制电路中被处理，并且将信号发送到适当的反射镜段以增加或减少反射率，以使分别在感光体照射的感光体的相应离散区域处的电荷水平相应地减小或增加 镜像段。
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