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13 条记录 (耗时 0.019 秒)

    Image forming apparatus and method for laser calibration
    2.
    发明公开
    Image forming apparatus and method for laser calibration 失效
    图像形成设备和激光校准的方法

    公开(公告)号：EP0880274A3

    公开(公告)日：1999-12-29

    申请号：EP98302104.9

    申请日：1998-03-20

    申请人： Lexmark International, Inc.

    发明人： Bush, Craig Palmer ,  Clarke, Cyrus Bradford ,  Langer, David Brian ,  Wright, Phillip Byron

    IPC分类号： H04N1/40

    CPC分类号： G06K15/1209 ,  B41J2/471 ,  G03G15/0435 ,  G03G2215/025 ,  G03G2215/0402 ,  H04N1/40037

    摘要： The invention is directed to a method of calibrating a laser (12) in an electrophotographic image forming apparatus (10) used for producing a print image on a print medium. A laser (12) having a selectively energizable laser beam output is provided. A rotatable optical device (20) and the laser combine to define a movable projection path of the laser beam output. Rotation of the optical device (20) results in movement of the projection path across a scan line overlaying a photoconductive drum (38). The optical device (20) has a rotational acceleration upon initial rotation thereof with a ramp-up period during which the rotational velocity increases. A safe area (46) is established in a portion of the scan line (40,50) which does not overlay an image area (48) on the photoconductive drum (38). The laser (12) is energized and calibrated when the projection path is positioned in the safe area (46). The calibration is carried out during the ramp-up period of the rotating optical device (20).

    Method and system of sensing an output level of an output stack of print media in an imaging forming apparatus
    3.
    发明公开
    Method and system of sensing an output level of an output stack of print media in an imaging forming apparatus 失效
    方法和系统，用于感测在图像形成设备的记录介质的输出叠层的电平

    公开(公告)号：EP0876983A1

    公开(公告)日：1998-11-11

    申请号：EP98303619.5

    申请日：1998-05-08

    申请人： Lexmark International, Inc.

    发明人： Blanck, Thomas Wilbur ,  McKay, Matthew Lowell ,  Clarke, Cyrus Bradford ,  Wright, Phillip Byron

    IPC分类号： B65H43/06

    CPC分类号： B65H43/06 ,  B65H2511/152 ,  B65H2511/30 ,  B65H2220/01

    摘要： A method of determining an output level of an output stack (20) of print media in an image forming apparatus (10). The print media is transported, one print medium (28) at a time, to the output stack (20). A sensor (40) positioned in association with the output stack (20) senses when the output level of the output stack has reached a near full level. At least one physical characteristic of the print media is identified which can affect the stacking of the print media. The number of the print media transported to the output stack (20) is counted after the near full level is sensed. A determination that the output level of the output stack has reached a full level is made, dependent upon each of the at least one physical characteristic and the counted number of the print media.

    摘要翻译： 在图像形成装置（10）在打印介质的输出叠层（20）的输出电平确定的方法。 打印介质被输送时，一次在一个打印介质（28），到输出叠层（20）。 与输出叠层（20）相关联定位的传感器（40）感测当输出叠层的输出电平已经达到近满高度。 打印介质的至少一个物理特性确定了会影响打印介质的堆叠。 近满高度感测后运到输出叠层（20）的打印介质的数量进行计数。 的确定做了输出叠层的输出高度达到满高度制成，取决于每个所述至少一个物理特性以及打印介质的计数的。

    Apparatus with flash memory control for revision
    5.
    发明公开
    Apparatus with flash memory control for revision 失效
    Vorrichtung mit Flash-Speichersteuerung zurÄnderung

    公开(公告)号：EP0706119A2

    公开(公告)日：1996-04-10

    申请号：EP95307060.4

    申请日：1995-10-04

    申请人： LEXMARK INTERNATIONAL, INC.

    发明人： Bush, Craig Palmer ,  Clarke, Cyrus Bradford ,  Langer, David Brain

    IPC分类号： G06F9/24

    CPC分类号： G06F9/24 ,  G06F8/60 ,  G06K15/00 ,  G06K15/002

    摘要： Printer (1) receives revised operating code in flash memory (19). To preserve offset adjustment unique to the printer, the values in new operating code are compared with those in the previous code, and new offsets preserving the previous offsets are stored in permanent memory (21). The use of permanent memory is minimized by basing the calculation on changes from start of production.

    摘要翻译： 打印机（1）在闪存中接收修改后的操作码（19）。 为了保持打印机独有的偏移调整，将新操作代码中的值与前一代码中的值进行比较，并将保留先前偏移量的新偏移量存储在永久存储器（21）中。 通过根据生产开始的变化计算来最小化永久记忆的使用。

    Method and apparatus for automatically determining the type of printhead installed in a laser printer
    7.
    发明公开
    Method and apparatus for automatically determining the type of printhead installed in a laser printer 失效
    用于自动确定印刷头的类型的方法和设备，他D IN的激光打印机被安装

    公开(公告)号：EP0877337A3

    公开(公告)日：2000-12-06

    申请号：EP98302156.9

    申请日：1998-03-23

    申请人： Lexmark International, Inc.

    发明人： Clarke, Cyrus Bradford ,  Wright, Phillip Byron ,  Langer, David Brian

    IPC分类号： G06K15/12 ,  B41J2/44

    CPC分类号： B41J2/471 ,  B41J2202/17 ,  G06K15/1204

    摘要： A laser printer (10) is provided having an automatic printhead identification system for use in a family of laser printers that are compatible with more than one model of printhead. For example, a single laser printer model can be made so that two different printheads can be successfully used, so long as the printer system knows which laser printhead has actually been installed. To detect which printhead has been installed, the printer operating system provides a reference clock signal (REF CLK) having a pre-determined frequency, which dictates the rotational speed of the motor (42). Once the motor (42) has achieved a "lock" operational speed, the printer (10) measures the scan rate of the faceted mirror by detecting the time interval between pulses of the "HSYNC" signal. The HSYNC signal is sent to a "divide-by-n counter" circuit (40) which divides the pulse frequency of the HSYNC signal, thereby increasing the time interval (by a factor of "n") that must be sensed by the system to determine which printhead is in fact installed. So long as the HSYNC "lock" frequency is different between the various models of printheads that are compatible with a particular model laser printer, the principles of the invention can be used without adding any extra hardware sensors, signals, or memory addresses and detecting codes.

    Image forming apparatus and method for laser calibration
    8.
    发明公开
    Image forming apparatus and method for laser calibration 失效
    Bilderzeugungsgerätund Verfahren zur Laserkalibrierung

    公开(公告)号：EP0880274A2

    公开(公告)日：1998-11-25

    申请号：EP98302104.9

    申请日：1998-03-20

    申请人： Lexmark International, Inc.

    发明人： Bush, Craig Palmer ,  Clarke, Cyrus Bradford ,  Langer, David Brian ,  Wright, Phillip Byron

    IPC分类号： H04N1/40

    CPC分类号： G06K15/1209 ,  B41J2/471 ,  G03G15/0435 ,  G03G2215/025 ,  G03G2215/0402 ,  H04N1/40037

    摘要： The invention is directed to a method of calibrating a laser (12) in an electrophotographic image forming apparatus (10) used for producing a print image on a print medium. A laser (12) having a selectively energizable laser beam output is provided. A rotatable optical device (20) and the laser combine to define a movable projection path of the laser beam output. Rotation of the optical device (20) results in movement of the projection path across a scan line overlaying a photoconductive drum (38). The optical device (20) has a rotational acceleration upon initial rotation thereof with a ramp-up period during which the rotational velocity increases. A safe area (46) is established in a portion of the scan line (40,50) which does not overlay an image area (48) on the photoconductive drum (38). The laser (12) is energized and calibrated when the projection path is positioned in the safe area (46). The calibration is carried out during the ramp-up period of the rotating optical device (20).

    摘要翻译： 本发明涉及一种用于在用于在打印介质上产生打印图像的电子照相图像形成装置（10）中校准激光器（12）的方法。 提供了具有选择性激励的激光束输出的激光器（12）。 可旋转光学装置（20）和激光器组合以限定激光束输出的可移动投影路径。 光学装置（20）的旋转导致投影路径跨越覆盖感光鼓（38）的扫描线的移动。 光学装置（20）在初始旋转时具有旋转加速度，其中旋转速度增加。 在扫描线（40,50）的不覆盖感光鼓（38）上的图像区域（48）的部分中建立安全区域（46）。 当投影路径位于安全区域（46）中时，激光器（12）被通电和校准。 校准在旋转光学装置（20）的斜坡上升期间进行。