ADJUSTING SCAN RATE WITHIN SCANNING DEVICE
    58.
    发明申请
    ADJUSTING SCAN RATE WITHIN SCANNING DEVICE 有权
    在扫描设备中调整扫描速率

    公开(公告)号:US20090034020A1

    公开(公告)日:2009-02-05

    申请号:US11831846

    申请日:2007-07-31

    Abstract: A scanning device includes a scanning mechanism, a memory, a processing mechanism, and a scan rate adjustment mechanism. The scanning mechanism scans a media sheet having an image thereon at a variable scan rate, to yield raw data. The memory temporarily stores the raw data. The processing mechanism converts the raw data within the memory into processed data. The raw data is removed from the memory as the raw data is converted. The scan rate adjustment mechanism adjusts the variable scan rate, based on one or more of an amount of free space within the memory, a fill rate at which the raw data is filling the memory, and a removal rate at which the raw data is being removed from the memory, so that the memory does not become completely full.

    Abstract translation: 扫描装置包括扫描机构,存储器,处理机构和扫描速率调整机构。 扫描机构以可变扫描速率扫描其上具有图像的介质片,以产生原始数据。 内存暂时存储原始数据。 处理机制将存储器中的原始数据转换为处理数据。 当原始数据被转换时,原始数据将从存储器中删除。 扫描速率调整机构基于存储器内的可用空间量,原始数据填充存储器的填充率以及原始数据的移除速度的一个或多个来调整可变扫描速率 从内存中删除,以使内存不会完全充满。

    Optical scanning unit and image forming apparatus using same
    59.
    发明申请
    Optical scanning unit and image forming apparatus using same 有权
    光学扫描单元和使用其的成像设备

    公开(公告)号:US20080225102A1

    公开(公告)日:2008-09-18

    申请号:US12076200

    申请日:2008-03-14

    Inventor: Yasumasa Tomita

    Abstract: An optical scanning unit used in an image forming apparatus having a latent image carrier includes a light emitter, a rotary deflector, an inclination adjustment unit, and a controller. The light emitter emits a light beam. The rotary deflector deflects and scans the light beam onto a surface of the latent image carrier. The inclination adjustment unit adjusts an inclination of a scan line corresponding to the light beam relative to a reference scan line on the latent image carrier. The controller changes at least one of a linear velocity of the latent image carrier and a rotation speed of the rotary deflector so as to change a ratio between the linear velocity of the latent image carrier and a scan speed of the light beam, and controls the inclination adjustment unit based on the ratio to keep the scan line from inclining relative to the reference scan line.

    Abstract translation: 在具有潜像载体的图像形成装置中使用的光学扫描单元包括光发射器,旋转偏转器,倾斜调节单元和控制器。 光发射器发射光束。 旋转偏转器将光束偏转并扫描到潜像载体的表面上。 倾斜调整单元相对于潜像载体上的基准扫描线调整与光束对应的扫描线的倾斜度。 控制器改变潜像载体的线速度和旋转偏转器的旋转速度中的至少一个,以便改变潜像载体的线速度和光束的扫描速度之间的比率,并且控制 倾斜调整单元,其基于比例,以使扫描线相对于参考扫描线倾斜。

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