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公开(公告)号：US6059284A
公开(公告)日：2000-05-09
申请号：US781361
申请日：1997-01-21
CPC分类号： B65H9/002 , B65H5/062 , B65H2404/696 , B65H2404/6961
摘要： An apparatus and method for registering and deskewing a sheet along a sheet path. A pair of drive spheres are located in the sheet path. When a sheet enters the nips formed by the spheres the sheet is driven until it is sensed by a sensor. The drive spheres are driven by a pair of wheels which allow the spheres to rotate about any axis through their center and parallel to the plane of the sheet. The spheres are driven such that the sheet is side registered and deskewed as it is moved along the sheet path. Constant feedback from the sensors to the drive controller allows the sheet to be registered in a very short distance and has the added benefit of self compensation for wear of the drive components. The wide registration and deskewing latitude of the device allows for the use of relatively inexpensive and low accuracy sheet drives preceding the device.
摘要翻译： 一种用于沿片材路径对片材进行登记和偏斜的装置和方法。 一对驱动球位于片材路径中。 当纸张进入由球形成的胶片时，片材被驱动，直到被传感器感测到。 驱动球由一对轮驱动，这些轮允许球围绕其中心并平行于片的平面绕任何轴线旋转。 驱动球体，使得片材沿着片材路径移动时被侧向对准并进行歪斜校正。 从传感器到驱动控制器的恒定反馈允许纸张在非常短的距离内进行记录，并且具有对驱动部件磨损的自我补偿的附加益处。 该设备的广泛配准和偏移校正纬度允许在设备之前使用相对便宜且低精度的片式驱动器。
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公开(公告)号：US5678159A
公开(公告)日：1997-10-14
申请号：US672489
申请日：1996-06-26
CPC分类号： B65H9/002 , G03G15/6564 , G03G15/6567 , B65H2511/242 , B65H2513/40 , G03G15/235 , G03G2215/00561 , G03G2215/00721
摘要： A deskewing and registering device for an electrophotographic printing machine. A single set of sensors determine the position and skew of a sheet in a paper path and generate signals indicative thereof. A pair of independently driven nips forward the sheet to a registration position in skew and at the proper time based on signals from a controller which interprets the position signals and generates the motor control signals. An additional set of sensors can be used at the registration position to provide feedback for updating the control signals as rolls wear or different substrates having different coefficients of friction are used.
摘要翻译： 一种用于电子照相印刷机的歪斜和记录装置。 一组传感器确定纸张路径中纸张的位置和偏斜，并产生指示纸张的信号。 基于解释位置信号并产生电动机控制信号的来自控制器的信号，一对独立驱动的夹钳在偏斜和适当的时间将纸张向前移动到对准位置。 在配准位置可以使用一组额外的传感器来提供用于更新控制信号的反馈，因为辊磨损或使用具有不同摩擦系数的不同衬底。
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公开(公告)号：US5715514A
公开(公告)日：1998-02-03
申请号：US720642
申请日：1996-10-02
CPC分类号： B65H9/002 , G03G15/6564 , G03G15/6567 , B65H2511/20 , B65H2513/104 , G03G15/235 , G03G2215/00405 , G03G2215/00561 , G03G2215/00569
摘要： There is provided a calibration system for a deskewing and registering device for an electrophotographic printing machine. The method includes a.) moving a sheet from a first position to a second position along a paper path; b.) sensing the position of the sheet at the first position and the second position; c.) choosing a correction value to cause the sheet to change a lateral position from the first position to the second position; d.) repeating the moving, sensing, and choosing steps until a predetermined adjustment is made when moving the sheet from the first position to the second position to determine a proper calibration value.
摘要翻译： 提供了一种用于电子照相打印机的偏移和记录装置的校准系统。 该方法包括：a）沿着纸张路径将片材从第一位置移动到第二位置; b。）感测纸张在第一位置和第二位置的位置; c。）选择校正值以使所述纸张从第一位置改变到第二位置的横向位置; d。）重复移动，感测和选择步骤，直到在将纸张从第一位置移动到第二位置时进行预定的调整以确定适当的校准值。
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4.发明授权Color image registration based upon belt and raster output scanner synchronization 有权基于皮带和光栅输出扫描仪同步的彩色图像配准公开(公告)号：US06456309B1
公开(公告)日：2002-09-24
申请号：US09626465
申请日：2000-07-26
IPC分类号： B41J2385
CPC分类号： G03G15/5008 , G03G15/0152 , G03G15/0163 , G03G2215/0158 , G03G2215/017 , H04N1/0473 , H04N1/1135 , H04N2201/0471 , H04N2201/04722 , H04N2201/04732 , H04N2201/04734 , H04N2201/04744 , H04N2201/04756
摘要： Color electrophotographic printers having latent image positions synchronized with start-of-scan signals. A laser source projects a laser beam onto a multifaceted rotating polygon that sweeps that beam in a scan line across a moving photoreceptor. A start-of-scan detector produces start-of-scan signals when the laser beam is in position to write a scan line. A belt sensor produces belt signals when indicia on the photoreceptor passes a reference position. A controller receives the belt signals and the start-of-scan and then adjusts the photoreceptors rotational velocity such that the belt signals are an integral multiple of the start-of-scan signals. To reduce the impact of drive roller eccentricities on belt signal to start-of-scan signal timing, the perimeters of photoreceptor roller elements are sub-multiples of the photoreceptor length.
摘要翻译： 具有与扫描开始信号同步的潜像位置的彩色电子照相打印机。 激光源将激光束投射到多面旋转的多边形上，该扫描线在扫描线上扫过运动的感光体。 当激光束处于写入扫描线的位置时，扫描扫描检测器产生扫描开始信号。 当感光体上的标记通过参考位置时，带传感器产生带信号。 控制器接收皮带信号和扫描开始，然后调节光感受器的旋转速度，使得皮带信号是扫描扫描信号的整数倍。 为了减小驱动辊偏心对皮带信号对起始扫描信号定时的影响，感光鼓元件的周长是感光体长度的次倍数。
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公开(公告)号：US5697608A
公开(公告)日：1997-12-16
申请号：US669727
申请日：1996-06-26
CPC分类号： B65H9/002 , B65H2511/242
摘要： An apparatus and method for registering and deskewing a sheet along a paper path. A pair of independently driven selectively actuable nips are used to drive a sheet transverse to a paper path direction until the edge of a sheet is registered laterally and in skew. The transverse nips are then deactivated and a drive nip moves the sheet in a process direction along the paper path. A first transport sensor senses the lead edge of a sheet, a second sensor is used to also detect the lead edge of a sheet within a certain distance from the detection by the first sensor. The transport drive nip can then be adjusted based on the transport time between the first transport sensor and the second transport sensor so that the sheet arrives at a registration sensor at the prescribed time. This apparatus and method allows the use of simple point type sensors as opposed to more complex and expensive sensor arrays.
摘要翻译： 一种用于沿着纸路径对片材进行配准和歪斜校正的设备和方法。 一对独立驱动的可选择性致动的夹头用于驱动横向于纸张路径方向的片材，直到片材的边缘横向和歪斜地登记。 横向压头然后被去激活，并且驱动压区沿着纸通道沿着处理方向移动纸张。 第一传送传感器感测纸张的前缘，第二传感器用于还检测与第一传感器的检测距离一定距离内的纸张的前缘。 然后可以基于第一传送传感器和第二传送传感器之间的传送时间来调整传送驱动夹持器，使得片材在规定时间到达对准传感器。 该装置和方法允许使用简单的点型传感器，而不是更复杂和昂贵的传感器阵列。
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6.发明授权On line compensation for slow drift of color fidelity in document output terminals (DOT) 失效在文件输出端子（DOT）中色彩保真度慢漂移的在线补偿公开(公告)号：US06222648B1
公开(公告)日：2001-04-24
申请号：US08787524
申请日：1997-01-21
IPC分类号： H04N146
CPC分类号： H04N1/6033 , H04N1/6036
摘要： A method and apparatus for periodically upgrading the color calibration for an electrophotographic printer (or other digital document viewing device) using a color compensator is proposed. Initially, a fairly large number of colors are printed and measured. From this information a color correction is determined and stored in a high density compensator. A small number of color patch samples are printed and measured at regular intervals during the use of the printing machine. This low density information which is periodically updated compensates for slow drift in the high density compensator. Each time the small patch printing process is repeated a different set of colors is used to assure that all regions within the gamut of the machine are updated uniformly. A similar process can be used to maintain the gray scale fidelity in a black and white printer or digital document display device.
摘要翻译： 提出了一种用于使用颜色补偿器周期性地升级用于电子照相打印机（或其他数字文档查看设备）的颜色校准的方法和装置。 最初，打印和测量相当大数量的颜色。 根据该信息，确定颜色校正并将其存储在高密度补偿器中。 在使用印刷机期间，以规则的间隔打印和测量少量的色块样品。 这种周期性更新的低密度信息补偿了高密度补偿器中的慢漂移。 每次重复小贴片打印过程时，都使用不同的颜色集来确保机器色域内的所有区域均匀地更新。 可以使用类似的过程来保持黑白打印机或数字文档显示设备中的灰度保真度。
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公开(公告)号：US4691212A
公开(公告)日：1987-09-01
申请号：US798091
申请日：1985-11-14
申请人： Edward J. Solcz , Gerald A. Domoto , Barry M. Wolf
发明人： Edward J. Solcz , Gerald A. Domoto , Barry M. Wolf
IPC分类号： G02B6/04 , G02B26/08 , G02B26/10 , G06K7/10 , G06K15/12 , H04N1/113 , G01D9/42 , G01D15/14 , H04N1/21
CPC分类号： H04N1/1135 , G02B26/08 , G02B26/103 , G06K7/10653
摘要： A piezoelectric bimorph scanner is disclosed which has a flexural beam attached to the free end of a cantilever mounted piezoelectric bimorph crystal. A mirror is bonded to the flexural beam a predetermined distance from the bimorph crystal. An AC voltage of predetermined frequency is applied to the bimorph crystal causing the flexural beam to oscillate with a node at the center of the mirror. The mirror rotates about the node rather than swinging in an arc, enabling the scanner to deflect a collimated light beam over a larger deflection angle than heretofore possible without additional light beam control apparatus. In an alternate embodiment, a laser diode may be mounted on the flexural beam instead of the mirror, further reducing costs and components.
摘要翻译： 公开了一种压电双压电晶片扫描器，其具有附接到悬臂安装的压电双晶型晶体的自由端的弯曲梁。 反射镜与双晶型晶体预定距离的弯曲梁结合。 将预定频率的AC电压施加到双晶体晶体，导致弯曲光束与反射镜中心的节点振荡。 镜子围绕节点旋转而不是以弧形摆动，使得扫描器能够在比没有附加光束控制装置的以前更大的偏转角度偏转准直光束。 在替代实施例中，激光二极管可以安装在弯曲梁上而不是镜子上，进一步降低成本和部件。
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