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    Method and multibeam scanning device for the ablation of flexo printing plates by laser engraving
    2.
    发明授权
    Method and multibeam scanning device for the ablation of flexo printing plates by laser engraving 有权
    用于通过激光雕刻消除柔版印刷板的方法和多光束扫描装置

    公开(公告)号：US06822669B2

    公开(公告)日：2004-11-23

    申请号：US10068727

    申请日：2002-02-06

    申请人： Jörg-Achim Fischer ,  Axel Gebhardt ,  Thomas Jacobsen ,  Peter Ressel ,  Dirk Steinke

    发明人： Jörg-Achim Fischer ,  Axel Gebhardt ,  Thomas Jacobsen ,  Peter Ressel ,  Dirk Steinke

    IPC分类号： B41J247

    CPC分类号： G03F7/24 ,  B23K26/0608 ,  B23K26/0738 ,  B41C1/05 ,  G03F7/2055

    摘要： A method and a multibeam scanning device for ablation of a surface on a rotating drum by laser engraving with a multi-spot array includes simultaneously emitting laser beams from fiber exits disposed beside one another, dividing up each of the beams, after emerging from the exit in an AOM array having a number of AOMs corresponding to the number of exits, into two or more partial beams modulated independently of one another, imaging the exits with an optical system on the surface, and moving the exits, the AOM array, and the optical system together in a drum axial direction while the surface is scanned by the multi-spot array in a drum circumferential direction to make possible, without increasing the number of fiber lasers, an increase in the number of scanning points of the multi-spot array and a reduction of the space required by the scanning device.

    摘要翻译： 用于通过多点阵列的激光雕刻来消融旋转鼓上的表面的方法和多光束扫描装置包括同时从邻近设置的光纤出口发射激光束，在从出射出射出之后将每个光束分开 在具有对应于出口数量的多个AOM的AOM阵列中，分成两个或更多个彼此独立调制的部分光束，在表面上用光学系统成像出口，并移动出口，AOM阵列和 光学系统一起在滚筒轴向方向上，同时通过多点阵列在滚筒圆周方向上扫描表面以使得可以在不增加光纤激光器的数量的情况下增加多点阵列的扫描点数 并减少扫描装置所需的空间。

    Clock-generating circuit and image-forming apparatus having a function of canceling unevenness of scanning-light amount
    3.
    发明授权
    Clock-generating circuit and image-forming apparatus having a function of canceling unevenness of scanning-light amount 有权
    具有消除扫描光量不均匀的功能的时钟发生电路和图像形成装置

    公开(公告)号：US06784914B2

    公开(公告)日：2004-08-31

    申请号：US10091234

    申请日：2002-03-04

    申请人： Kouichi Takaki ,  Shinji Morita

    发明人： Kouichi Takaki ,  Shinji Morita

    IPC分类号： B41J247

    CPC分类号： G06K15/1219 ,  H04N1/40037 ,  H04N1/4015

    摘要： The invention concerns a clock-generating circuit, which generates dot clock pulses for driving a light-emitting element employed in an optical-writing section of an image-forming apparatus and has a function of canceling unevenness of scanning-light amount caused by variations of transmittances and reflectances in the optical-writing section when a polygon mirror scans a laser beam. The clock-generating circuit includes a digital-delay dot clock adjusting section to adjust timings of rising-edges or falling-edges of the dot clock pulses generated by changing a selection for a plurality of delayed-clock pulses, which are generated by delaying clock-pulses, outputted from a reference oscillator, in slightly different delay times; and a controlling section to control a selecting operation for the plurality of delayed clock pulses, performed in the digital-delay dot clock adjusting section, so as to compensate for unevenness of scanning-light amount caused by the variations of transmittances and reflectances in the optical-writing section.

    摘要翻译： 本发明涉及一种时钟发生电路，其产生用于驱动图像形成装置的光学写入部分中使用的发光元件的点时钟脉冲，并且具有消除由变化引起的扫描光量的不均匀的功能 当多面镜扫描激光束时，光写入部分的透射率和反射率。 时钟发生电路包括数字延迟点时钟调整部分，用于通过改变多个延迟时钟脉冲的选择来产生的点时钟脉冲的上升沿或下降沿的定时，这些延迟时钟脉冲是通过延迟时钟 从参考振荡器输出的脉冲在稍微不同的延迟时间内; 以及控制部分，用于控制在数字延迟点时钟调整部分中执行的多个延迟时钟脉冲的选择操作，以便补偿由光学器件中的透射率和反射率的变化引起的扫描光量的不均匀性 - 写作部分。

    Dual polygon laser printhead for a color printer
    4.
    发明授权
    Dual polygon laser printhead for a color printer 有权
    双面激光打印头用于彩色打印机

    公开(公告)号：US06774923B2

    公开(公告)日：2004-08-10

    申请号：US10160223

    申请日：2002-05-31

    申请人： Christopher Gregory Chee ,  Daniel Eugene Pawley ,  Earl Dawson Ward, II

    发明人： Christopher Gregory Chee ,  Daniel Eugene Pawley ,  Earl Dawson Ward, II

    IPC分类号： B41J247

    CPC分类号： B41J2/473 ,  G02B26/123 ,  G03G15/0435 ,  G03G2215/0404

    摘要： An optical system particularly useful for color laser printers. Four imaging systems are provided, one for each color, black, magenta, cyan and yellow. Each imaging system has separate pre-scan and post-scan optical assemblies. Two scanning polygons are provided, and each scanning polygon is shared by two imaging systems. Both pre-scan optical assemblies shared by each scanning polygon are provided on the same side of the scanning assembly at substantially similar mirror image angles, to reduce scan image registration errors. The pre-scan and post-scan optical assemblies have improved adjustability.

    摘要翻译： 特别适用于彩色激光打印机的光学系统。 提供四种成像系统，每种颜色一种，黑色，品红色，青色和黄色。 每个成像系统具有单独的预扫描和后扫描光学组件。 提供两个扫描多边形，并且每个扫描多边形由两个成像系统共享。 每个扫描多边形共享的两个预扫描光学组件都以基本相似的镜像角度设置在扫描组件的同一侧上，以减少扫描图像配准误差。 预扫描和扫描后光学组件具有改进的可调整性。

    Image recorder and method of recording image
    5.
    发明授权
    Image recorder and method of recording image 有权
    图像记录器和记录图像的方法

    公开(公告)号：US06724415B2

    公开(公告)日：2004-04-20

    申请号：US10175380

    申请日：2002-06-20

    申请人： Hiroshi Nomoto ,  Takahide Hirawa

    发明人： Hiroshi Nomoto ,  Takahide Hirawa

    IPC分类号： B41J247

    CPC分类号： H04N1/4005 ,  H04N1/40037

    摘要： An image quality on a recording material is influenced by, for example, the sensitivity of a developer for use in developing the recording material. Compensating for the lowering of the sensitivity of the developer requires increasing the amount of emission of a laser beam. However, there is a difference in the amount of change between dimensions, in a main scanning direction and in a sub-scanning direction, of a dot blackened depending on the increase in the amount of emission of the laser beam. Increasing or decreasing the time duration of emission of the laser beam by a predetermined amount achieves adjustment of the dimension of the dot in the main scanning direction. Specifically, there is provided a memory for storing therein the sensitivity of the developer, the amount of emission of the laser beam and the time duration of emission of the laser beam in corresponding relation to each other, and the emission from a laser light source is adjusted by reading the amount and time duration of emission corresponding to the sensitivity of the developer from the memory.

    摘要翻译： 记录材料上的图像质量受例如用于显影记录材料的显影剂的灵敏度的影响。 为了降低显影剂的灵敏度而进行补偿，需要增加激光束的发射量。 然而，根据激光束的发射量的增加，在主扫描方向和副扫描方向上的尺寸之间的变化量存在不同点变黑。 增加或减少激光束的发射持续时间预定量可以实现主扫描方向上的点尺寸的调整。 具体地说，提供了一种存储器，用于在其中存储显影剂的灵敏度，激光束的发射量和激光束的发射持续时间彼此对应关系，并且来自激光光源的发射是 通过读取与存储器的显影剂的灵敏度相对应的发射量和持续时间来进行调整。

    Apparatus for printing high resolution images using reflective LCD modulators
    6.
    发明授权
    Apparatus for printing high resolution images using reflective LCD modulators 失效
    使用反射型LCD调制器打印高分辨率图像的设备

    公开(公告)号：US06700599B2

    公开(公告)日：2004-03-02

    申请号：US10357571

    申请日：2003-02-04

    申请人： Janet Donner ,  Sujatha Ramanujan ,  Nelson A. Blish

    发明人： Janet Donner ,  Sujatha Ramanujan ,  Nelson A. Blish

    IPC分类号： B41J247

    CPC分类号： G03B27/46 ,  B41J2/465

    摘要： An apparatus for printing images including illumination optics (75) that provides uniform area light is disclosed. A mirror (440) receives the uniform area light and redirects the light. A first reflective LCD modulator (90) modulates the redirected light on a site by site basis and reflects the first modulated light to a media plane. A motor (441) moves the mirror on a line parallel to the illumination optics. The mirror redirects the light to a second reflective LCD modulator (95). The second reflective LCD modulator modulates the redirected light on a site by site basis and reflects the second modulated light to the media plane.

    摘要翻译： 公开了一种用于打印包括提供均匀区域光的照明光学器件（75）的图像的装置。 镜（440）接收均匀区域光并重定向光。 第一反射型LCD调制器（90）逐站调制重定向的光，并将第一调制光反射到媒体平面。 电动机（441）使反射镜平行于照明光学器件移动。 镜子将光重定向到第二反射LCD调制器（95）。 第二反射型LCD调制器在现场基础上调制重定向的光并将第二调制光反射到介质平面。

    Method and apparatus for controlling an acousto-optic modulator
    7.
    发明授权
    Method and apparatus for controlling an acousto-optic modulator 失效
    用于控制声光调制器的方法和装置

    公开(公告)号：US06693660B2

    公开(公告)日：2004-02-17

    申请号：US09834270

    申请日：2001-04-12

    申请人： John Robert Hemmings

    发明人： John Robert Hemmings

    IPC分类号： B41J247

    CPC分类号： H04N1/40037 ,  G06K15/1223 ,  G06K15/1295

    摘要： A method is provided of modifying pulsed image data signals for controlling an acousto-optic modulator in an image setter system. The method comprises modifying the pulse widths of the image data signals in accordance with predetermined parameters so as to improve the correspondence between the data representing the image and the data recorded on the record medium. Following modification the data signals are supplied to the acousto-optic modulator.

    摘要翻译： 提供了一种修改脉冲图像数据信号以控制图像设置器系统中的声光调制器的方法。 该方法包括根据预定参数修改图像数据信号的脉冲宽度，以便改善表示图像的数据与记录在记录介质上的数据之间的对应关系。 在修改之后，将数据信号提供给声光调制器。

    Image recording device
    8.
    发明授权
    Image recording device 失效
    图像记录装置

    公开(公告)号：US06690406B2

    公开(公告)日：2004-02-10

    申请号：US09854941

    申请日：2001-05-15

    申请人： Kanji Nakanishi ,  Shintaro Washizu

    发明人： Kanji Nakanishi ,  Shintaro Washizu

    IPC分类号： B41J247

    CPC分类号： G03B27/306

    摘要： A light and heat sensitive recording material passes through an accommodating section and a heat-development section and reaches an optical recording section. At the optical recording section, optical recording is effected, at the heat-development section, development is effected and at the photo-fixing section, fixing is effected upon the light and heat sensitive recording material. Finally, the light and heat sensitive recording material is discharged from a discharge section to the outside. At the photo-fixing section, white light from the optical recording section is used and irradiated onto the light and heat sensitive recording material. Thus, by using the same light source, a latent image can be appropriately recorded on the light and heat sensitive recording material and the heat-developed image can be reliably fixed.

    摘要翻译： 光和热敏记录材料通过容纳部分和热显影部分并到达光学记录部分。 在光学记录部分，进行光学记录，在显影部分进行显影，并且在光固定部分，对光和热敏记录材料进行定影。 最后，将光和热敏记录材料从放电部分排出到外部。 在光固定部分，使用来自光学记录部分的白光并照射到光和热敏记录材料上。 因此，通过使用相同的光源，可以将潜像适当地记录在光和热敏记录材料上，并且可以可靠地固定热显影图像。