公开(公告)号：US06815702B2

公开(公告)日：2004-11-09

申请号：US10004093

申请日：2001-10-23

申请人： Arnfried Kiermeier ,  Norman F. Rolfe

发明人： Arnfried Kiermeier ,  Norman F. Rolfe

IPC分类号： G01V800

CPC分类号： B41F27/005 ,  B41P2227/30

摘要： A method and apparatus is disclosed to precisely locate an edge of an imageable plate mounted on a drum or other support surface. A light source and light sensor are used to measure the difference in reflectivity between the plate and the support surface. The drum or support surface contains at least one groove to increase the difference in reflectivity between the plate and the support surface. The groove may also contain an anti-reflecting layer to further increase the difference in reflectivity. The groove may also have a geometric shape that causes incident light to be directed away from the light sensor.

公开(公告)号：US06633024B2

公开(公告)日：2003-10-14

申请号：US10012948

申请日：2001-12-10

申请人： Norman F. Rolfe

发明人： Norman F. Rolfe

IPC分类号： G02B2740

CPC分类号： G02B7/28 ,  G03F7/24

摘要： The present invention provides an autofocus system for an imaging system, such as an external drum platesetter. The autofocus system automatically focuses each of a plurality of scan lines produced by an imaging system on a supply of recording material, and includes a control loop with scan line to scan line feedforward of a motor command waveform.

摘要翻译： 本发明提供了一种用于成像系统的自动对焦系统，例如外部鼓式制版机。 自动对焦系统将由成像系统产生的多条扫描线的每一条自动聚焦在记录材料的供应上，并且包括具有扫描线的扫描线的控制回路以扫描电机命令波形的前馈。

公开(公告)号：US4565935A

公开(公告)日：1986-01-21

申请号：US400688

申请日：1982-07-22

申请人： Norman F. Rolfe

发明人： Norman F. Rolfe

IPC分类号： G06G7/24

CPC分类号： G06G7/24

摘要： A logarithmic converter circuit comprises a logarithmic transfer function generating device and a transconductance amplifier connected in parallel with that logarithmic transfer function generating device, the transconductance amplifier preferrably having a transconductance in the range of about two micromhos to about twenty millimhos.

摘要翻译： 对数转换器电路包括与该对数传递函数产生装置并联连接的对数传递函数产生装置和跨导放大器，该跨导放大器优选地具有在约2微欧姆至约20毫微秒范围内的跨导。

公开(公告)号：US6097418A

公开(公告)日：2000-08-01

申请号：US46660

申请日：1998-03-24

申请人： David B. Larsen ,  John F. Nolan ,  David Coppeta ,  Norman F. Rolfe

发明人： David B. Larsen ,  John F. Nolan ,  David Coppeta ,  Norman F. Rolfe

IPC分类号： H04N1/19 ,  B41J2/44 ,  G06K15/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/192 ,  H04N1/193 ,  B41J2/435

CPC分类号： H04N1/1903 ,  G06K15/1238 ,  H04N1/053 ,  H04N1/192 ,  H04N1/193 ,  H04N1/1934 ,  G06K2215/111 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04755

摘要： The present invention eliminates artifacts in an image formed using a plurality of imaging sources. Visible seams in the image are eliminated by randomizing the stitch point between the scan lines produced by each imaging source. The randomization may be optimized by additionally applying a method for relocating the random stitch point based on the data content of the scan line, adjacent scan lines, and other criteria. The present invention further compensates for in-scan and cross-scan errors caused by thermally induced errors, spinner synchronization errors, mechanical misalignment, and other factors associated with the use of a plurality of imaging systems. A photodetector system, comprising a mask having a pair of triangular openings, provides measurements of the in-scan and cross-scan errors.

摘要翻译： 本发明消除了使用多个成像源形成的图像中的假象。 通过使由每个成像源产生的扫描线之间的针迹点随机化，来消除图像中的可见接缝。 可以通过另外应用基于扫描线的数据内容，相邻扫描线和其他标准来重新定位随机缝合点的方法来优化随机化。 本发明还补偿由热诱导误差，旋转器同步误差，机械失准以及与使用多个成像系统相关联的其它因素引起的扫描扫描和交叉扫描误差。 包括具有一对三角形开口的掩模的光电检测器系统提供扫描和扫描错误的测量。

公开(公告)号：US4198006A

公开(公告)日：1980-04-15

申请号：US955856

申请日：1978-10-30

申请人： Norman F. Rolfe

发明人： Norman F. Rolfe

IPC分类号： A01F29/09 ,  B02C18/16 ,  B02C25/00 ,  B26D7/26 ,  G01B7/14

CPC分类号： A01F29/095 ,  B02C18/16 ,  B02C25/00 ,  B26D7/2628 ,  G01B7/14

摘要： Magnetic-electronic apparatus for sensing the clearance between two ferrous metals, for application in measuring the clearance between a shear bar and the cutting knives of a harvesting farm machine, is disclosed having a magnetic sensor disposed within the shear bar for producing a magnetic field, the interception of which by the passage of a knife produces an electronic signal which is processed by appropriate circuitry for indicating the clearance between the knives and the shear bar.

公开(公告)号：US4468608A

公开(公告)日：1984-08-28

申请号：US329747

申请日：1981-12-11

申请人： Norman F. Rolfe

发明人： Norman F. Rolfe

IPC分类号： G01N27/416 ,  G01R31/02 ,  G01R31/16

CPC分类号： G01N27/4165

摘要： An electrochemical sensor system includes a high impedance ion selective electrode and an electrode test circuit that has an isolation capacitor connected between the output signal lead from the ion selective electrode and a test voltage terminal, and a monitoring circuit connected to respond to the output signal from the electrode. The isolation capacitor is a high quality capacitor and provides a shunt impedance that is much higher than the maximum electrode impedance. A voltage transition at the test voltage terminal is coupled by the isolation capacitor to the output lead and the resulting decay rate of the voltage transition on the output lead is monitored to provide an indication of the quality of the electrode.

摘要翻译： 电化学传感器系统包括高阻抗离子选择电极和电极测试电路，其具有连接在离子选择性电极的输出信号引线与测试电压端子之间的隔离电容器，以及连接到响应于来自 电极。 隔离电容器是高质量的电容器，并提供比最大电极阻抗高得多的并联阻抗。 测试电压端子处的电压转换通过隔离电容器耦合到输出引线，并且监测在输出引线上产生的电压转变的衰减速率以提供电极质量的指示。

公开(公告)号：US4042132A

公开(公告)日：1977-08-16

申请号：US689422

申请日：1976-06-01

申请人： Carl E. Bohman ,  Hubert R. Durling, Jr. ,  Leon Susman ,  Norman F. Rolfe

发明人： Carl E. Bohman ,  Hubert R. Durling, Jr. ,  Leon Susman ,  Norman F. Rolfe

IPC分类号： A01D43/073 ,  B65G67/22

CPC分类号： A01D43/073

摘要： The crop discharge spout of an agricultural machine is continuously adjusted so that the crop material discharged therefrom is always directed into a wagon connected to the rear of the agricultural machine. A sensor disposed on the agricultural machine cooperates with a mechanical follower which is coupled therefrom to the wagon to provide a signal indicative of the angle between the agricultural machine and the wagon. The signal is compared with a signal from a second sensor indicative of the angle of the direction of the crop discharge from the spout with respect to the agricultural machine and an error signal is developed from the difference therebetween. The error signal is coupled to a motor which rotates the discharge spout accordingly until the error signal is reduced to zero.

摘要翻译： 农业机械的作物排出口连续调节，使得从其排出的作物材料总是被引导到连接到农业机器后部的货车中。 设置在农用机器上的传感器与机械跟随器配合，机械跟随器与其相连，以提供指示农业机器和货车之间的角度的信号。 该信号与来自第二传感器的信号进行比较，该信号表示相对于农业机器从喷口的作物排放方向的角度，并且从它们之间的差异产生误差信号。 误差信号耦合到电动机，该马达相应地旋转排出喷嘴，直到误差信号减小到零。

公开(公告)号：US06233038B1

公开(公告)日：2001-05-15

申请号：US09039529

申请日：1998-03-16

申请人： Akim Lennhoff ,  G. Bradley Mills ,  Philip A. Rombult ,  John D. Kennedy ,  Edward C. Comeau ,  Norman F. Rolfe

发明人： Akim Lennhoff ,  G. Bradley Mills ,  Philip A. Rombult ,  John D. Kennedy ,  Edward C. Comeau ,  Norman F. Rolfe

IPC分类号： G03B2758

CPC分类号： H04N1/00588 ,  H04N1/00567 ,  H04N1/00639 ,  H04N1/0607 ,  H04N1/08 ,  H04N1/0813 ,  H04N1/0856 ,  H04N1/0869 ,  H04N1/0873 ,  H04N1/0882

摘要： An imaging system is provided for imaging media of while supported at an imaging position on a support surfaces. The system includes a loading device configured to move the medium to be imaged along the support surface to the imaging position. During loading, the leading edge of the medium, which extends across the medium width and substantially perpendicular to a direction of movement of the medium, moves in a direction towards a registration device. A registration device is contacted by the leading edge of the medium during loading so as to position the medium in the imaging position on the support surface. A medium securing device secures the medium to the support surface and a perforation mechanism subsequently punches or notches the medium prior to imaging. A drive mechanism is provided to move the perforation mechanism and the registration device, typically prior to loading of the medium, to a position which corresponds to the particular width of the medium to be imaged.

摘要翻译： 提供了一种成像系统，用于在支撑在支撑表面上的成像位置的同时成像介质。 该系统包括装载装置，其构造成将待成像的介质沿着支撑表面移动到成像位置。 在加载期间，介质延伸穿过介质宽度并且基本上垂直于介质的移动方向的前缘在朝着配准装置的方向上移动。 在加载期间，定位装置由介质的前缘接触，以将介质定位在支撑表面上的成像位置。 介质固定装置将介质固定到支撑表面，并且穿孔机构随后在成像之前冲压或切口介质。 提供驱动机构以通常在将介质装载之前移动穿孔机构和配准装置到与要成像的介质的特定宽度对应的位置。

公开(公告)号：US4265536A

公开(公告)日：1981-05-05

申请号：US51809

申请日：1979-06-25

申请人： William W. Carson ,  Norman F. Rolfe

发明人： William W. Carson ,  Norman F. Rolfe

IPC分类号： G01D3/00 ,  G01N21/41 ,  G01N30/30 ,  G01N30/74

CPC分类号： G01D3/00 ,  G01N21/41 ,  G01N30/74 ,  G01N30/30

摘要： Apparatus for measuring deflection of a light beam by sensing the beam with means providing two optical measurements, and providing an electrical output dependent upon the difference between the two measurements, with the instantaneous magnitude of each measurement being dependent upon the instantaneous deflection of the beam and upon the instantaneous intensity of the beam, the apparatus including electrical circuitry for including in the output an offset term dependent upon a scale factor and upon the instantaneous magnitude of at least one of the measurements, thereby making the offset term dependent upon the instantaneous intensity of the light beam, and means for initially zeroing the apparatus by adjusting the scale factor so as to make the output equal to a predetermined base value, whereby changes in the measurements due to changes in light beam intensity are offset by corresponding changes in the offset term, so as to thereby reduce the influence of beam intensity on the output.

摘要翻译： 用于通过用提供两个光学测量的装置感测光束来测量光束的偏转的装置，并且提供取决于两个测量之间的差异的电输出，每个测量的瞬时幅度取决于光束的瞬时偏转， 根据光束的瞬时强度，该装置包括电路，用于在输出中包括取决于比例因子的偏移项和至少一个测量的瞬时幅度，从而使偏移项取决于 光束，以及用于通过调整比例因子来最初使装置归零的装置，以便使输出等于预定的基值，由此由于光束强度的变化引起的测量的变化被偏移项的相应变化所抵消 ，从而减小光束强度对外流的影响 t。

公开(公告)号：US06052216A

公开(公告)日：2000-04-18

申请号：US240983

申请日：1999-01-29

申请人： Norman F. Rolfe ,  Steven E. Mason ,  Jeffrey Knox ,  Arkady B. Chernin

发明人： Norman F. Rolfe ,  Steven E. Mason ,  Jeffrey Knox ,  Arkady B. Chernin

IPC分类号： H04N1/40 ,  G02F1/11 ,  G02B26/00 ,  G02F1/33

CPC分类号： H04N1/4005 ,  H04N1/40037

摘要： A laser beam intensity modulation system has a variable delay circuit that is used to control the relative delay in the delivery of a video signal between two cascaded AOM's. This delay circuit is controlled by a delay controller that monitors the intensity modulation of the laser beam to provide feedback control. This system maximizes the rise and fall times of the beam to generate precise beam modulation required for high speed image setters.

摘要翻译： 激光束强度调制系统具有可变延迟电路，其用于控制​​两个级联AOM之间的视频信号传送的相对延迟。 该延迟电路由延迟控制器控制，该延迟控制器监视激光束的强度调制以提供反馈控制。 该系统使波束的上升和下降时间最大化，以产生高速图像设定器所需的精确波束调制。