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1.发明授权Method and apparatus for detection of an edge of a printing plate mounted on a drum imaging system 失效用于检测安装在鼓成像系统上的印版的边缘的方法和装置公开(公告)号：US06815702B2
公开(公告)日：2004-11-09
申请号：US10004093
申请日：2001-10-23
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.
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公开(公告)号：US06052216A
公开(公告)日：2000-04-18
申请号：US240983
申请日：1999-01-29
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。
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公开(公告)号：US06002495A
公开(公告)日：1999-12-14
申请号：US868720
申请日：1997-06-04
CPC分类号： H04N1/0869 , H04N1/08 , H04N1/0873 , H04N1/0882 , H04N1/0607
摘要： An imaging system is provided for imaging media of differing widths 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. The 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 drive mechanism is provided to move the regristration pin, 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： 提供一种成像系统，用于在支撑表面上的成像位置处支撑不同宽度的成像介质。 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。 在装载期间，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。 提供驱动机构以通常在介质加载之前将重整销移动到对应于待成像介质的特定宽度的位置。
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公开(公告)号：US5892610A
公开(公告)日：1999-04-06
申请号：US890831
申请日：1997-07-10
申请人： Norman F. Rolfe , David B. Larsen
发明人： Norman F. Rolfe , David B. Larsen
CPC分类号： G02B26/10 , G02B27/642
摘要： A system for scanning a surface includes a radiation emitter configured to emit at least one beam of radiation, and a rotating deflector for deflecting the beam(s) onto a scanning surface. The deflector is movable along a translation axis to modify the path of the deflected beam(s) and thereby correct for any mispositioning of the beam(s) with respect to the scanning surface.
摘要翻译： 用于扫描表面的系统包括被配置为发射至少一个辐射束的辐射发射器和用于将光束偏转到扫描表面上的旋转偏转器。 偏转器可沿着平移轴线移动以改变偏转光束的路径，从而校正光束相对于扫描表面的任何错位。
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公开(公告)号：US5512932A
公开(公告)日：1996-04-30
申请号：US180828
申请日：1994-01-12
申请人： Norman F. Rolfe
发明人： Norman F. Rolfe
CPC分类号： H01S5/042 , H01S5/06832 , H01S5/0427 , H01S5/06213 , H01S5/40
摘要： A method and apparatus for driving a semiconductor laser device to produce a substantially constant optical power output over a range of temperature while preserving a high optical switching frequency.
摘要翻译： 一种用于驱动半导体激光器件以在保持高光开关频率的同时在温度范围内产生基本上恒定的光功率输出的方法和装置。
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公开(公告)号：US4289975A
公开(公告)日：1981-09-15
申请号：US59292
申请日：1979-07-20
申请人： Norman F. Rolfe
发明人： Norman F. Rolfe
摘要： In circuitry in which a digital circuit samples the output of an analog circuit, the improvement of using, during an interval prior to sampling, a solid-state switching element to dissipate the charge stored in a charge storage element (e.g., capacitor) in the analog circuit.
摘要翻译： 在数字电路对模拟电路的输出进行采样的电路中，改进在采样之前的间隔期间使用固态开关元件来消耗存储在电荷存储元件（例如电容器）中的电荷 模拟电路。
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7.发明授权Scan line to scan line feedforward in an autofocus system of an imaging system 失效在成像系统的自动对焦系统中扫描行扫描线前馈公开(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
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。
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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。
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9.发明授权Method and apparatus for combining a plurality of images without incurring a visible seam 失效用于组合多个图像而不产生可见接缝的方法和装置
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。
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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
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.
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