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1.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：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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3.发明授权Belt tension variation minimizing mechanism and a reproduction machine having same 有权带张力变化最小化机构和具有相同的再现机器公开(公告)号：US06269231B1
公开(公告)日：2001-07-31
申请号：US09560516
申请日：2000-04-28
IPC分类号： G03G1500
CPC分类号： G03G15/754
摘要： A tensioning mechanism is provided for minimizing tension variations in a moveable endless belt having a desired tension setting and includes a moveable member for mounting transversely to a direction of movement of the moveable endless belt and into contact with the moveable endless belt; a first assembly including a first rotatable arm having a first end connected to the moveable member, and a second end coupled to a first pivot; and a second assembly including a tensioning force applying roller, and a second rotatable arm having a first end connected to the moveable member and a second end coupled to a second pivot. The second rotatable arm forms a lap angle with the first rotatable arm, and the tensioning force applying roller applies a tensioning force to the moveable member having a force direction that is non-orthogonal relative to the direction of movement of the moveable endless belt, thereby tensioning the moveable endless belt and minimizing variations from the desired tension setting of the moveable endless belt.
摘要翻译： 提供张紧机构，用于使具有期望的张力设定的可移动环形带的张力变化最小化，并且包括用于横向于可移动环形带的运动方向安装并与可移动环形带接触的可移动构件; 第一组件，包括具有连接到可移动构件的第一端的第一可旋转臂和联接到第一枢轴的第二端; 以及第二组件，其包括张紧力施加辊和第二可旋转臂，其具有连接到所述可移动构件的第一端和联接到第二枢轴的第二端。 第二可旋转臂与第一可旋转臂形成搭接角，并且张紧力施加辊对具有与可移动环形带的移动方向非正交的力方向的可动构件施加张紧力，由此 张紧可移动的环形带并最小化可移动环形带的期望的张力设置的变化。
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公开(公告)号：US4403877A
公开(公告)日：1983-09-13
申请号：US372883
申请日：1982-04-29
CPC分类号： H02G11/00 , B41J19/005 , F16H19/0672 , F16H2019/0668
摘要： A flexible force transmitting member biasing arrangement consisting of a snubbing device and a spring. The arrangement functions to permit a flexible force transmitting member attached to it to undergo a significant amount of movement (due to the force exerted by the spring) at very slow rates but prevents the flexible force transmitting member from undergoing substantial movement at high rates attendant with high frequencies of motion. A preferred form of the snubbing device is a dashpot.
摘要翻译： 由缓冲装置和弹簧组成的柔性力传递部件偏置装置。 该装置的功能是允许附接到其上的柔性力传递构件以非常慢的速率经受大量的运动（由于弹簧施加的力），但是防止柔性力传递构件以高速率进行大量运动，伴随着 高频运动。 缓冲装置的优选形式是缓冲器。
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5.发明授权
公开(公告)号：US5890045A
公开(公告)日：1999-03-30
申请号：US4291
申请日：1998-01-08
CPC分类号： G03G15/162 , G03G15/161
摘要： A printing system including a moving intermediate transfer member for transporting a developed image from a moving image bearing member to a moving copy substrate. The moving intermediate member includes an elastic belt adapted to receive the developed image from the moving image bearing member at a first nip formed between the moving image bearing member and the moving intermediate member, and further adapted to transfer the developed image from the moving intermediate member to the moving copy substrate at a second nip formed between the moving intermediate member and the moving copy substrate, wherein the moving image bearing member and the moving intermediate member are transported at a substantiality equivalent first velocity in the first nip and a second velocity, substantially different from the first velocity, in the second nip. The combination of an elastic belt and differential velocities permits for the selective compression and stretching of the intermediate transfer member along a path of travel thereof.
摘要翻译： 一种打印系统，包括用于将显影图像从运动图像承载部件传送到移动复制基板的移动中间转印部件。 移动中间构件包括弹性带，适于在形成在运动图像承载构件和移动中间构件之间的第一夹层处从运动图像承载构件接收显影图像，并且还适于将来自移动中间构件的显影图像 在所述移动中间构件和所述移动复制基板之间形成的第二夹持位置到所述移动复制基板，其中所述运动图像承载构件和所述移动中间构件在所述第一压区中以实质上等效的第一速度被输送，并且基本上 在第二压区中与第一速度不同。 弹性带和不同速度的组合允许中间转印构件沿其行进路径的选择性压缩和拉伸。
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6.发明授权Apparatus for controlling belt guidance in an electrophotographic printing machine 失效用于在电子照相印刷机中控制带引导的装置
公开(公告)号：US5233388A
公开(公告)日：1993-08-03
申请号：US756000
申请日：1991-09-06
CPC分类号： G03G15/755 , G03G15/0163 , G03G2215/00156
摘要： Low lateral force rolls used in supporting a photoreceptor belt to minimize lateral belt motion on a multi-pass color copier. Single piece, widely spaced mounting through shafts are used in connection with side support structure of the module drawer to reduce inboard and outboard misalignment. An integral tensions slide/side plate guidance control system is employed to reduce misalignment of the tension roller. Use of these features aid in minimizing undesirable belt movement.
摘要翻译： 用于支撑感光带的低侧向力辊以最小化多通彩色复印机上的侧向带运动。 与模块抽屉的侧支撑结构相结合使用单件，宽间隔安装的轴，以减少内侧和外侧的未对准。 采用整体张力滑动/侧板引导控制系统来减少张紧辊的不对准。 使用这些特征有助于最小化不希望的皮带运动。
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7.发明授权Fringe field electrode array for simultaneous paper tacking and field assist 有权边缘场电极阵列，用于同时纸张粘贴和现场辅助公开(公告)号：US06508540B1
公开(公告)日：2003-01-21
申请号：US09692590
申请日：2000-10-20
申请人： Meng H. Lean , Vittorio R. Castelli
发明人： Meng H. Lean , Vittorio R. Castelli
IPC分类号： B41J206
CPC分类号： B41J2/06
摘要： The tacking pressure and droplet acceleration force in an ink jet printer is provided by an array of electrodes mounted under the transport mechanism. The array consists of multiple pairs of oppositely charged electrodes and the array is maintained at a bias voltage while the print head of the printer is grounded.
摘要翻译： 喷墨打印机中的粘贴压力和液滴加速力由安装在传送机构下方的电极阵列提供。 该阵列由多对相反电荷的电极组成，并且阵列在打印机的打印头接地时保持偏压。
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公开(公告)号：US5839016A
公开(公告)日：1998-11-17
申请号：US977280
申请日：1997-11-24
CPC分类号： G03G15/5062 , G03G15/0152 , G03G15/0163 , H04N1/508 , G03G2215/00042 , G03G2215/0005 , G03G2215/0016 , G03G2215/00586 , G03G2215/2074 , G03G2215/2083
摘要： This invention provides for duplex use of densitometers. An image is produced on a substrate, that substrate is brought back through the transfer station in a duplex fashion (that is, the substrate is inverted), and a sensor senses the image on the substrate. Beneficially, the sensor senses one or more parameters such as color registration, color occlusion/interference, black separation in color REaD printing, colorimetry, and the overall transfer and fusing process; and a printing process is controlled based on the sensed parameters.
摘要翻译： 本发明提供密度计的双重使用。 在基板上产生图像，将基板以双面方式（即，基板反转）返回通过转印站，并且传感器感测基板上的图像。 有利地，传感器感测一个或多个参数，例如颜色配准，颜色遮挡/干涉，颜色的黑色分离REaD印刷，比色法和整体转印和定影过程; 并且基于感测的参数来控制打印处理。
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公开(公告)号：US06374075B1
公开(公告)日：2002-04-16
申请号：US09559734
申请日：2000-04-28
申请人： Lawrence R. Benedict , Joannes N. M. DeJong , Vittorio R. Castelli , Lloyd A. Williams , Vincent M. Williams
发明人： Lawrence R. Benedict , Joannes N. M. DeJong , Vittorio R. Castelli , Lloyd A. Williams , Vincent M. Williams
IPC分类号： G03G1500
CPC分类号： B65H9/002 , B65H2301/331 , B65H2511/242 , B65H2511/40 , B65H2513/10 , B65H2515/30 , B65H2557/23 , G03G15/6564 , G03G15/6567 , G03G2215/00561 , G03G2215/00599 , G03G2215/00721 , B65H2220/01 , B65H2220/02
摘要： A copy machine having a high accuracy sheet registration system for precise placement of images on each copy sheet. The copy machine includes sensors with charge coupled devices (CCDs) that detect the sheet positions in two dimensions within the machine, and detect sheet arrival times at various positions with the machine. Using this detected information, the copy machine employs a multi-stage process to bring the sheet into contact with a color image moving on a photoreceptor belt, in synchronism with the position and speed of the image on the belt. The copy machine also monitors its own condition and makes predictions about needed preventive maintenance, to instruct personnel to service the machine before the machine fails.
摘要翻译： 一种具有高精度纸张登记系统的复印机，用于在每个复印纸上精确地放置图像。 复印机包括具有电荷耦合器件（CCD）的传感器，其在机器内检测两维的片材位置，并且在机器的各个位置处检测片材到达时间。 使用该检测到的信息，复印机采用多阶段处理，以使纸张与感光带上移动的彩色图像同步，与皮带上图像的位置和速度同步。 复印机还监控自身状况，并对所需的预防性维护进行预测，指导人员在机器故障前对机器进行维修。
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10.发明授权
公开(公告)号：US5287160A
公开(公告)日：1994-02-15
申请号：US731599
申请日：1991-07-17
CPC分类号： G03G15/0131 , G03G15/0163
摘要： A color printing system achieves enhanced registration of a plurality of color separations. A plurality of color separation images are formed on a receptor in spaced relationship to one another, the distance between the leading edges of successive images corresponding to a pitch distance. The motion components of the system have circumferences which are equal to or a submultiple of the pitch distance. Any systematic errors due to motion of the components will repeat themselves identically for each color separation and eliminate misregistration.
摘要翻译： 彩色打印系统实现了多种分色的增强配准。 多个分色图像形成在彼此间隔开的接收器上，连续图像的前缘之间的距离对应于间距距离。 系统的运动分量具有等于或间距距离的一半的周长。 由于组件的运动引起的任何系统误差将对于每种颜色分离重复本身，并消除不对准。
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