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    Laser scanning unit and method and apparatus for calibrating a post-scan assembly in a laser scanning unit
    1.
    发明授权
    Laser scanning unit and method and apparatus for calibrating a post-scan assembly in a laser scanning unit 有权
    激光扫描单元以及用于在激光扫描单元中校准后扫描组件的方法和装置

    公开(公告)号：US06888654B2

    公开(公告)日：2005-05-03

    申请号：US10235382

    申请日：2002-09-05

    申请人： Roger Cannon ,  Christopher Chee ,  Robert Paterson ,  Dawson Ward

    发明人： Roger Cannon ,  Christopher Chee ,  Robert Paterson ,  Dawson Ward

    IPC分类号： B41J2/47 ,  G02B26/12 ,  G02B26/08

    CPC分类号： B41J2/473 ,  G02B26/123

    摘要： A laser scanning unit is provided comprising a housing; a scanning assembly including a scanning device; a first light beam source directing a first light beam toward the scanning device; a second light beam source directing a second light beam toward the scanning device; and first and second post-scan optical assemblies located to receive first and second scanning beams reflected from the scanning device. Each post-scan optical assembly may comprise a first, second and third fold mirror, a first f-theta lens located between the first and the second fold mirrors, and a second f-theta lens located to receive light reflected from the third fold mirror and outputting a compensated scanning beam for generating a scan line on a corresponding photoconductive member.

    摘要翻译： 提供一种激光扫描单元，包括壳体; 包括扫描装置的扫描组件; 将第一光束引导到扫描装置的第一光束源; 将第二光束引向扫描装置的第二光束源; 以及定位成接收从扫描装置反射的第一和第二扫描光束的第一和第二后扫描光学组件。 每个后扫描光学组件可以包括第一，第二和第三折叠镜，位于第一和第二折叠镜之间的第一f-θ透镜，以及定位成接收从第三折射镜反射的光的第二f-θ透镜 并输出用于在对应的感光体上产生扫描线的经补偿的扫描光束。

    Humidity tolerant scan lens
    3.
    发明申请
    Humidity tolerant scan lens 有权
    耐湿扫描镜头

    公开(公告)号：US20050013010A1

    公开(公告)日：2005-01-20

    申请号：US10915837

    申请日：2004-08-11

    申请人： Roger Cannon ,  Dana Dodds ,  Philip Heink ,  Robert Paterson ,  Daniel Pawley ,  Wilson Routt

    发明人： Roger Cannon ,  Dana Dodds ,  Philip Heink ,  Robert Paterson ,  Daniel Pawley ,  Wilson Routt

    IPC分类号： G02B3/02 ,  G02B3/00

    CPC分类号： G02B3/02

    摘要： A lens has a lens body (1), reinforcing extensions (3a, 3b) and a clear aperture (9) surrounded on top and bottom by lens body. The lens is suitable for spot scanning. The lens is made of a water absorbing material, such as most polymers, particularly acrylate polymers. Aluminum sheets as vapor barriers are attached on each side of the lens body. This results in excellent resistance to change or distortion in high humidity environments.

    摘要翻译： 透镜具有透镜体（1），加强延伸部（3a，3b）和透明孔（9），透镜体在顶部和底部包围。 镜头适用于点扫。 透镜由吸水材料制成，例如大多数聚合物，特别是丙烯酸酯聚合物。 作为蒸气阻挡层的铝片被附着在透镜体的每一侧上。 这导致在高湿度环境下优异的抗变化或变形性。

    Laser scanner having reduced air currents
    4.
    发明申请
    Laser scanner having reduced air currents 有权
    激光扫描仪具有减小的气流

    公开(公告)号：US20050280699A1

    公开(公告)日：2005-12-22

    申请号：US10869408

    申请日：2004-06-16

    申请人： Roger Cannon ,  Martin Klement ,  Philip Riggs ,  Eric Westerfield

    发明人： Roger Cannon ,  Martin Klement ,  Philip Riggs ,  Eric Westerfield

    IPC分类号： B41J2/435 ,  B41J2/47 ,  G02B26/10

    CPC分类号： B41J2/471 ,  G02B26/105

    摘要： A method for improving the operation of an electrophotographic printer. The method includes providing an electrophotographic printer containing a laser scanning unit. A torsion oscillator for the laser scanning unit is enclosed in closed compartment. The closed compartment includes side walls having first and second side wall edges, a bottom wall attached on the first side wall edges, and a cover attached adjacent to the second side wall edges. The closed compartment is sufficient to reduce stray air currents from adjacent the torsion oscillator thereby improving the operation of the electrophotographic printer.

    摘要翻译： 一种改善电子照相打印机操作的方法。 该方法包括提供包含激光扫描单元的电子照相打印机。 用于激光扫描单元的扭转振荡器被封闭在封闭的隔室中。 封闭的隔室包括具有第一和第二侧壁边缘的侧壁，附接在第一侧壁边缘上的底壁和邻近第二侧壁边缘附接的盖。 封闭的隔间足以减少邻近扭转振荡器的杂散气流，从而改善电子照相打印机的操作。

    Stationary coil oscillator scanning system
    5.
    发明申请
    Stationary coil oscillator scanning system 有权

    公开(公告)号：US20050030605A1

    公开(公告)日：2005-02-10

    申请号：US10801319

    申请日：2004-03-16

    申请人： Roger Cannon ,  Timothy Green ,  Martin Klement ,  Daniel Pawley ,  Wilson Routt

    发明人： Roger Cannon ,  Timothy Green ,  Martin Klement ,  Daniel Pawley ,  Wilson Routt

    IPC分类号： G02B26/08 ,  G02B26/10 ,  G05B1/00

    CPC分类号： G02B26/0833 ,  G02B26/085 ,  G02B26/105

    摘要： An image scanning apparatus and a torsion oscillator are capable of operating across a dynamic range of possible operating frequencies. The image scanning apparatus uses a light source to produce a light beam, and the oscillator scans the light beam through a scanning pattern. The oscillator includes a plate member having a non-rectangular shape. At least one magnet is disposed on the plate. A surface of the plate member includes a reflective surface for reflecting a light beam. A frame is disposed in a spaced apart relation to a lower surface of the plate member. The frame includes at least one coil configured to induce an electromagnetic force on the at least one magnet to thereby oscillate the reflective surface to a rotational angle of oscillation at an oscillation frequency. The system also includes an imaging surface disposed in the path of the scanning pattern so that the light beam scans across the imaging surface, and a mechanical drive to move the imaging surface. A control system controls electric current provided to the at least one coil to achieve the oscillation.

    White vector adjustment via exposure
    6.
    发明申请
    White vector adjustment via exposure 有权
    通过曝光进行白色矢量调整

    公开(公告)号：US20060120739A1

    公开(公告)日：2006-06-08

    申请号：US11006175

    申请日：2004-12-07

    申请人： Gary Denton ,  Roger Cannon ,  Eric Westfield

    发明人： Gary Denton ,  Roger Cannon ,  Eric Westfield

    IPC分类号： G03G15/00

    CPC分类号： G03G15/045 ,  G03G15/04054 ,  G03G15/04072 ,  G03G2215/0119 ,  G03G2215/0412

    摘要： The white vector—the voltage difference between white areas of a latent image on a photoconductive unit and a developer roller—may be independently adjusted at each photoconductive unit, allowing multiple image forming units to be driven from a shared power supply. The photoconductive unit is charged to a high voltage level relative to the developer roller, and selectively optically discharged to the desired white vector. The voltage of the discharged area may be measured, or may be calculated by increasing the developer roller voltage a predetermined amount, discharging the photoconductive unit until toner is sensed in white image areas, and then reducing the developer roller voltage. The white areas may be discharged using a lower optical power from the writing light source or a different light source, such as a laser, LED or electroluminescent source. A second laser may be of a different wavelength than a writing laser.

    摘要翻译： 白色矢量 - 感光单元上的潜像的白色区域与显影辊之间的电压差可以在每个光电导单元处独立地调整，从而可以从共享电源驱动多个图像形成单元。 感光单元相对于显影辊被充电到高电压电平，并且选择性地光学地放电到所需的白色矢量。 可以测量放电区域的电压，或者可以通过将显影辊电压提高预定量来计算，排出感光单元直到在白色图像区域中感测到调色剂，然后降低显影辊电压。 可以使用来自写入光源或不同光源（例如激光，LED或电致发光源）的较低光功率来排出白色区域。 第二激光器可以具有与写入激光器不同的波长。

    White Vector Adjustment Via Exposure Using Two Optical Sources
    7.
    发明申请
    White Vector Adjustment Via Exposure Using Two Optical Sources 有权
    通过使用两个光源的曝光进行白色矢量调整

    公开(公告)号：US20070109396A1

    公开(公告)日：2007-05-17

    申请号：US11620229

    申请日：2007-01-05

    申请人： Gary Denton ,  Roger Cannon ,  Eric Westerfield

    发明人： Gary Denton ,  Roger Cannon ,  Eric Westerfield

    IPC分类号： B41J2/45

    CPC分类号： G03G15/045 ,  G03G15/04054 ,  G03G15/04072 ,  G03G2215/0119 ,  G03G2215/0412

    摘要： The white vector—the voltage difference between white areas of a latent image on a photoconductive unit and a developer roller—may be independently adjusted at each photoconductive unit, allowing multiple image forming units to be driven from a shared power supply. The photoconductive unit is charged to a high voltage level relative to the developer roller, and selectively optically discharged to the desired white vector by a first laser source. The voltage of the discharged area may be measured, or may be calculated by increasing the developer roller voltage a predetermined amount, discharging the photoconductive unit until toner is sensed in white image areas, and then reducing the developer roller voltage. The white areas are discharged using a different light source, such as a laser, LED or electroluminescent source. A second laser may be of a different wavelength than a writing laser.

    摘要翻译： 白色矢量 - 感光单元上的潜像的白色区域与显影辊之间的电压差可以在每个光电导单元处独立地调整，从而可以从共享电源驱动多个图像形成单元。 感光单元相对于显影辊被充电到高电压电平，并且通过第一激光源选择性地光学地放电到期望的白色矢量。 可以测量放电区域的电压，或者可以通过将显影辊电压提高预定量来计算，排出感光单元直到在白色图像区域中感测到调色剂，然后降低显影辊电压。 白色区域使用不同的光源（如激光，LED或电致发光源）进行放电。 第二激光器可以具有与写入激光器不同的波长。

    Collimation assembly for adjusting laser light sources in a multi-beamed laser scanning unit
    8.
    发明申请
    Collimation assembly for adjusting laser light sources in a multi-beamed laser scanning unit 有权
    用于在多光束激光扫描单元中调整激光光源的准直组件

    公开(公告)号：US20050206717A1

    公开(公告)日：2005-09-22

    申请号：US10805059

    申请日：2004-03-19

    申请人： Richard Boyatt ,  Roger Cannon ,  Philip Heink ,  Danny Peters

    发明人： Richard Boyatt ,  Roger Cannon ,  Philip Heink ,  Danny Peters

    IPC分类号： B41J2/47 ,  B41J15/14 ,  B41J27/00 ,  G11B7/00

    CPC分类号： B41J2/473

    摘要： A collimation assembly for a multi-beamed laser scanner including a collimation housing mounted to a printhead housing of the laser scanner, and at least two adjustment brackets supported on the collimation housing and located adjacent to each other in a cross-scan direction. Each of the adjustment brackets includes a mount member and a laser light source is supported within each of the mount members, each of the light sources defining a respective light beam axis. At least two collimation lenses are also provided supported on the collimation housing and intersected by one of the light beam axes. Each of the adjustment brackets is movable relative to the collimation housing in a scan direction and in the cross-scan direction to locate each of the light beam axes at a predetermined position relative to a respective collimation lens. Each of the laser light sources is additionally adjustable in the process direction, parallel to the light beam axes, to adjust the distance between the laser light sources and the collimation lenses.

    摘要翻译： 一种用于多光束激光扫描器的准直组件，包括安装在激光扫描器的打印头外壳上的准直外壳，以及至少两个支撑在准直壳体上的调节支架，并且在横扫扫描方向上彼此相邻。 每个调节支架包括安装构件，并且激光源支撑在每个安装构件内，每个光源限定相应的光束轴线。 还设置有至少两个准直透镜，其被支撑在准直壳体上并与光束轴之一相交。 每个调节支架可相对于准直壳体沿扫描方向和横扫描方向移动，以将每个光束轴相对于相应的准直透镜定位在预定位置。 每个激光源可以在平行于光束轴的处理方向上额外调节，以调节激光光源和准直透镜之间的距离。