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公开(公告)号：US5278587A
公开(公告)日：1994-01-11
申请号：US970889
申请日：1992-11-03
IPC分类号： B41J2/44 , B41J2/45 , B41J2/455 , G03G15/00 , G03G15/01 , G03G21/14 , H04N1/047 , H04N1/113 , H04N1/12 , H04N1/50 , G03G21/00 , G01D15/14
CPC分类号： G03G15/0152 , G03G15/011 , G03G15/0163 , H04N1/0473 , H04N1/506 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04786
摘要： The present invention is directed to a precise method of registering plurality of imaging stations, so as to form sequential images on a photoreceptor belt in a single pass. A belt hole is formed in the photoreceptor belt, outside the image area, but within the scan of the imager scan line. The scan line is sequentially swept in a transverse direction across the width of the belt. As the leading edge of the belt hole advances into the sweeping beam, a plurality of beam sweeps will occur while the leading edge is moving through the sweep area. Due to the gaussian illumination of the scanning beam, the exposure at the belt edge gradually increases to a maximum point coinciding with the maximum illumination of the scanning beam. A detector is placed beneath the belt to provide a signal representing the exposure level of each scanning beam which crosses the leading edge of the advancing belt hole. The detectors produce a current output representative of the exposure level. The current output is converted into voltage outputs which are then used in an extrapolation process to determine a midpoint for the illumination profile crossing the scan line and, from this, a reference time at which the midpoint of the beam illumination was reached. This reference time is then used to generate a precisely timed line sync signal which is reproducible through each of the imaging stations to produce registration of the first scan line of each image sequence with a very high degree of accuracy.
摘要翻译： 本发明涉及一种用于记录多个成像站的精确方法，以便在单次通过中在感光带上形成顺序图像。 在感光带中形成带孔，在图像区域外，但在成像器扫描线的扫描内。 扫描线沿着带的宽度在横向方向依次扫过。 当带孔的前缘进入扫掠光束时，在前缘移动通过扫掠区域时将发生多个光束扫描。 由于扫描光束的高斯照明，带边缘处的曝光逐渐增加到与扫描光束的最大照明一致的最大点。 检测器放置在皮带下方，以提供表示穿过前进皮带孔前缘的每个扫描光束的曝光水平的信号。 检测器产生代表曝光水平的电流输出。 电流输出被转换成电压输出，然后将其用于外推过程中以确定与扫描线相交的照明轮廓的中点，并且从此获得到达光束照明中点的参考时间。 然后，该参考时间用于产生精确定时的线同步信号，该信号可通过每个成像站再现，以非常高的准确度产生每个图像序列的第一扫描线的对准。
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公开(公告)号：US5321434A
公开(公告)日：1994-06-14
申请号：US991228
申请日：1992-12-16
CPC分类号： G06K15/129 , B41J2/473 , G06K15/1219 , G03G2215/00143 , G03G2215/017
摘要： A method and apparatus is provided for lateral registration of image exposures on photoreceptive belts subject to lateral deviation from linear travel. In one embodiment, a plurality of Raster Output Scanner (ROS) imagers in a digital color printer are positioned so as to form successive images on the surface of the belt. A plurality of split cell photodetectors are positioned beneath the belt, one each associated with each of the ROS imagers. An aperture is formed in the belt in a non-image area, but in alignment with the detectors. Scan lines from each ROS unit are periodically visible through the aperture and illuminate the photodetector. The outputs from each of the photodetector photosites are compared and lateral belt movement errors thereby identified. Appropriate correction signals are generated to maintain the correct lateral registration.
摘要翻译： 提供了一种方法和装置，用于在受到与线性行进的横向偏离的感光皮带上的图像曝光的横向对准。 在一个实施例中，数字彩色打印机中的多个光栅输出扫描器（ROS）成像器被定位成在带的表面上形成连续的图像。 多个分裂单元光电检测器位于带之下，每个与每个ROS成像器相关联。 在非图像区域中的带中形成孔，但与检测器对准。 来自每个ROS单元的扫描线通过孔径周期性地看到并照亮光电检测器。 比较来自每个光电探测器光电的输出，从而识别侧向带移动误差。 产生适当的校正信号以保持正确的横向配准。
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3.发明授权Raser output scanner color printer with improved start of scan detection and process registration 失效Raser输出扫描仪彩色打印机，具有改进的扫描检测和进程注册开始
公开(公告)号：US5319537A
公开(公告)日：1994-06-07
申请号：US988587
申请日：1992-12-10
CPC分类号： G03G15/0152 , G03G15/011 , G03G15/0163 , H04N1/047 , H04N1/506 , H04N1/1135 , H04N1/12 , H04N2201/04729 , H04N2201/04731 , H04N2201/0476
摘要： A Raster Output Scanner (ROS) color printer is formed by providing several ROS imagers adjacent image exposure locations of a photoreceptor belt. Each ROS imager forms a separate color image in response to video input signals with each color image superimposed in registration over the previously formed images. Registration in the process direction is enabled by a quad cell photosensor whose output is continually compared to determine whether process registration deviations from a previously established position are necessary. Correction signals are generated in an iterative fashion until a preselected process registration position is re-established. The quad cell detector is also used for a second function; to produce the start and end of scan signals which enable image registration in the cross-process direction.
摘要翻译： 光栅输出扫描器（ROS）彩色打印机通过在感光带附近的图像曝光位置附近提供若干ROS成像器来形成。 每个ROS成像器响应于视频输入信号形成单独的彩色图像，每个彩色图像被叠加在先前形成的图像上。 在过程方向上的注册由四通道光电传感器实现，四通道光电传感器的输出被不断比较，以确定是否需要与以前建立的位置的过程配准偏差。 校正信号以迭代的方式产生，直到重新建立预选的过程登记位置。 四胞胎检测器也用于第二功能; 以产生扫描信号的开始和结束，其使得能够在交叉处理方向上进行图像配准。
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公开(公告)号：US5451778A
公开(公告)日：1995-09-19
申请号：US295579
申请日：1994-08-25
CPC分类号： H04N1/047 , H04N1/1135 , H04N1/12 , H04N2201/04729 , H04N2201/04731
摘要： An apparatus and method for reliably monitoring the position of a radiant energy beam, for example, a scanning laser beam such as that produced by a raster output scanning system to expose a photoresponsive member, where the beam traverses the surface of a photoreceptive member at a high rate of speed. The apparatus, which includes a lateral-effect photodiode, is also capable of signaling when the radiant energy beam traverses a specific location. The apparatus may also be used to determine the relative intensity of the radiant energy beam, thereby significantly reducing the space and expense necessary to monitor the radiant energy beam by combining multiple sensing operation in a single apparatus.
摘要翻译： 一种用于可靠地监测辐射能束的位置的装置和方法，例如扫描激光束，例如由光栅输出扫描系统产生的扫描激光束以暴露光响应元件，其中光束穿过光接收元件的表面， 高速率。 包括横向效应光电二极管的装置也能够在辐射能量束穿过特定位置时发出信号。 该装置还可以用于确定辐射能量束的相对强度，从而通过在单个装置中组合多个感测操作来显着地减少监视辐射能量束所需的空间和费用。
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5.发明授权Beam steering sensor for a raster scanner using a lateral effect detecting device 失效光束扫描器的光束转向传感器，使用横向效应检测装置
公开(公告)号：US5386123A
公开(公告)日：1995-01-31
申请号：US932525
申请日：1992-08-20
CPC分类号： H04N1/047 , H04N1/1135 , H04N1/12 , H04N2201/04729 , H04N2201/04731
摘要： An apparatus and method for reliably monitoring the position of a radiant energy beam, for example, a scanning laser beam such as that produced by a raster output scanning system to expose a photoresponsive member, where the beam traverses the surface of a photoreceptive member at a high rate of speed. The apparatus, which includes a lateral-effect photodiode, is also capable of signaling when the radiant energy beam traverses a specific location. The apparatus may also be used to determine the relative intensity of the radiant energy beam, thereby significantly reducing the space and expense necessary to monitor the radiant energy beam by combining multiple sensing operation in a single apparatus.
摘要翻译： 一种用于可靠地监测辐射能束的位置的装置和方法，例如扫描激光束，例如由光栅输出扫描系统产生的扫描激光束以暴露光响应元件，其中光束穿过光接收元件的表面， 高速率。 包括横向效应光电二极管的装置也能够在辐射能量束穿过特定位置时发出信号。 该装置还可以用于确定辐射能量束的相对强度，由此通过在单个装置中组合多个感测操作来显着地减少监视辐射能量束所需的空间和费用。
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6.发明授权公开(公告)号：US08052244B2
公开(公告)日：2011-11-08
申请号：US12394807
申请日：2009-02-27
申请人： David Norman Ruff , Cary Eric Sjolander , Scott J. Phillips , Kenneth R. Ossman , Barry Daniel Reeves
发明人： David Norman Ruff , Cary Eric Sjolander , Scott J. Phillips , Kenneth R. Ossman , Barry Daniel Reeves
IPC分类号： B41J29/38 , B41J29/393
CPC分类号： H01L27/146
摘要： A printing device comprises a print head, imaging member, and a moveable sensor array. The print head is configured to deliver marking material to the imaging member as it moves in a process direction. The linear sensor array comprises a plurality of photo sensors configured to scan the imaging member. The photo detectors of the linear sensor array define a sensor axis that is substantially perpendicular to the process direction. The linear sensor array is configured to move along the sensor axis between a first position where the sensor array scans one portion of the imaging member and a second position where the sensor array scans another portion of the imaging member. If a fault is detected during calibration of the sensor array, the moveable sensor array may be used to determine whether the source of the fault rests with the imaging member or the sensor array.
摘要翻译： 打印装置包括打印头，成像构件和可移动传感器阵列。 打印头构造成当成像构件沿着处理方向移动时将标记材料输送到成像构件。 线性传感器阵列包括配置成扫描成像构件的多个光传感器。 线性传感器阵列的光电检测器限定基本上垂直于过程方向的传感器轴线。 线性传感器阵列被配置为沿着传感器轴线在传感器阵列扫描成像构件的一部分的第一位置和传感器阵列扫描成像构件的另一部分的第二位置之间移动。 如果在校准传感器阵列期间检测到故障，则可移动传感器阵列可用于确定故障源是否由成像构件或传感器阵列支撑。
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公开(公告)号：US07980654B2
公开(公告)日：2011-07-19
申请号：US12482030
申请日：2009-06-10
IPC分类号： B41J29/393 , H04N1/46
CPC分类号： B41J29/393
摘要： Systems and methods are provided for calibrating a sensory array to ensure a robust cross-process registration measurement. The calibration is implemented using a calibration step that determines the signature error amount of a given image reading sensor. The signature error amount for the sensor is stored in a signature error look-up table. When the sensors are used to sense print head alignment, the correction may be implemented by accessing the signature error look-up table for the given sensor when calibrating the print heads. The signature error look-up table provides an amount of offset for each sensor that is used in determining the appropriate head position of a given print head to calibrate the print heads for the signature error associated with the given sensor.
摘要翻译： 提供了系统和方法来校准感觉阵列，以确保鲁棒的交叉过程配准测量。 使用确定给定图像读取传感器的签名错误量的校准步骤来实现校准。 传感器的签名错误量存储在签名错误查询表中。 当传感器用于感测打印头对准时，校正可以通过在校准打印头时访问给定传感器的签名错误查找表来实现。 签名错误查找表为每个传感器提供了一定量的偏移量，用于确定给定打印头的适当头部位置，以校准与给定传感器相关联的签名错误的打印头。
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8.发明授权Systems and methods for sensing skew and bow of a raster optical scanner using a full width array detector 有权用于使用全宽阵列检测器感测光栅光学扫描器的偏斜和弓形的系统和方法公开(公告)号：US07193638B2
公开(公告)日：2007-03-20
申请号：US10998986
申请日：2004-11-30
CPC分类号： G03G15/5041 , G03G2215/0158
摘要： System and methods are provided for detecting color separation misalignment in raster optical scanners. A dash minimum response curve is obtained from a plurality of minimal responses sensed from a plurality of dashes in a test pattern. The frequency of the dash minimum response curve a is used to detect skew or bow, depending on whether the frequency is a constant or a variable.
摘要翻译： 提供了用于检测光栅光学扫描仪中的颜色分离不对准的系统和方法。 从测试图案中的多个破折号中感测到的多个最小响应获得冲击最小响应曲线。 破折号最小响应曲线a的频率用于检测偏斜或弓形，取决于频率是常数还是变量。
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9.发明授权Systems and methods for detecting print head defects in printing clear ink 有权用于检测打印透明墨水中的打印头缺陷的系统和方法公开(公告)号：US07690746B2
公开(公告)日：2010-04-06
申请号：US12053206
申请日：2008-03-21
IPC分类号： B41J29/38
CPC分类号： B41J29/02 , B41J2/2114 , B41J2/2142 , B41J29/393
摘要： A method for detecting a defect in an inkjet print head for printing a substantially clear ink includes including an ultraviolet or infrared sensitive material in the substantially clear ink, marking a test image on a substrate by jetting the substantially clear ink through one or more jets of the inkjet print head to be evaluated, exposing the test image to activating radiation having a wavelength to which the included ultraviolet or infrared sensitive material responds. During or following the exposing, the test image is evaluated with an image sensor, and whether the inkjet print head or any one of the one or more jets thereof being evaluated is defective is then determined based on the evaluation. A system for the method is also set forth.
摘要翻译： 用于检测喷墨打印头中用于打印基本透明墨水的缺陷的方法包括在基本透明的墨水中包括紫外线或红外线敏感材料，通过一个或多个射流喷射基本上透明的墨水， 要评估的喷墨打印头，将测试图像暴露于具有所包含的紫外线或红外敏感材料响应的波长的激活辐射。 在曝光期间或之后，使用图像传感器评估测试图像，并且基于评估来确定喷墨打印头或其评估的一个或多个喷射中的任何一个是否有缺陷。 还阐述了该方法的系统。
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10.发明授权System and method for lead edge and trail edge sheet constraint and curl sensing 有权铅边缘和边缘片约束和卷曲检测的系统和方法公开(公告)号：US07548316B2
公开(公告)日：2009-06-16
申请号：US11737083
申请日：2007-04-18
申请人： Ruddy Castillo , Barry Paul Mandel , Kenneth R. Ossman , Stanley J. Wallace , Michael D. Borton
发明人： Ruddy Castillo , Barry Paul Mandel , Kenneth R. Ossman , Stanley J. Wallace , Michael D. Borton
IPC分类号： G01N21/25
CPC分类号： G01B11/16 , B41J11/0095 , B65H7/14 , B65H2220/09 , B65H2511/17 , B65H2511/514 , B65H2513/511 , B65H2553/412 , B65H2701/1311 , G03G15/6561 , G03G2215/00561 , G03G2215/00586 , G03G2215/0059 , G03G2215/00721 , G03G2215/0158 , B65H2220/03 , B65H2220/01
摘要： A lead edge and/or trail edge sheet curl sensing and constraint method and system. First and second light emitters and detector pairs are aligned such that the light beams from the first light emitter and second light emitter cross at the transport media sheet substrate path, which constitutes the path of a media sheet substrate with zero curl. A media sheet substrate with either positive or negative curl on the lead edge of the sheet substrate interrupts light beams from the first and second light emitters, as detected by first and second light detectors. A similar approach can be used to detect the trail edge curl. The time delay between the light beam interruptions is proportional to the sheet substrate curl, and the order of interruptions indicates whether the sheet substrate curl is positive or negative. A first pair and a second pair of substrate constraint rollers can also be provided in the paper path upstream and downstream of the sensing system. The roller pairs closest to the sensor are made of relatively non-deformable materials or of materials of similar elasticity so that different media are constrained in the sensor zone with the same sheet trajectory relative to the nip.
摘要翻译： 一种前沿和/或边缘边缘卷曲感知和约束方法和系统。 对准第一和第二发光器和检测器对，使得来自第一光发射器和第二光发射器的光束在传输介质片基板路径处交叉，其构成具有零卷曲的介质片基板的路径。 在第一和第二光检测器检测到的在片状基板的引线边缘上具有正或负卷曲的介质片基板中断来自第一和第二发光体的光束。 可以使用类似的方法来检测尾迹卷曲。 光束中断之间的时间延迟与片材基板卷曲成正比，中断顺序表示片基板卷曲是正还是负。 也可以在传感系统的上游和下游的纸路中提供第一对和第二对基板约束辊。 最靠近传感器的辊对由相对不可变形的材料或具有相似弹性的材料制成，使得传感器区域中不同的介质被限制在具有相对于辊隙的相同片材轨迹。
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