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    • 4. 发明授权
    • Continuous form printer having adjustable tractors
    • 连续式打印机具有可调节拖拉机
    • US5516220A
    • 1996-05-14
    • US339900
    • 1994-11-14
    • Yutaka IshikawaTsutomu Sato
    • Yutaka IshikawaTsutomu Sato
    • B41J11/32B41J11/26B65H20/20
    • B41J11/26
    • A continuous form printer includes a tractor feed system that adapts to changes in paper width while printing. A tractor body is movable on a shaft, and a movable housing supporting tractor pulleys and a tractor belt is resiliently movable with respect to the tractor body. A locking member, in a first position, allows the tractor body to be adjusted for paper size while holding a movable member. In a second position, the locking member holds the tractor body in place, and frees the movable member to move relative to the tractor body, so that the movable member, supporting the tractor pulleys and belt, may resiliently move to compensate for changes in paper width during printing.
    • 连续式打印机包括在打印时适应纸张宽度变化的拖拉机进给系统。 拖拉机主体可在轴上移动,并且可移动的壳体支撑拖拉机滑轮和拖拉机带可相对于拖拉机主体弹性移动。 在第一位置处的锁定构件允许拖拉机主体在保持可动构件的同时调节纸张尺寸。 在第二位置,锁定构件将拖拉机主体保持在适当位置,并使可移动构件相对于拖拉机主体移动,从而支撑拖拉机滑轮和皮带的可移动构件可以弹性移动以补偿纸张的变化 打印时的宽度
    • 9. 发明授权
    • Multi-beam scanning optical system and image forming apparatus using the same
    • 多光束扫描光学系统及使用其的成像装置
    • US06650454B2
    • 2003-11-18
    • US10090147
    • 2002-03-05
    • Junya AzamiManabu KatoYutaka Ishikawa
    • Junya AzamiManabu KatoYutaka Ishikawa
    • G02B2608
    • G02B26/123
    • A multi-beam scanning optical system includes a plurality of light sources, a deflecting unit which deflects a plurality of laser beams emitted from the light sources, and a scanning optical unit which focuses the laser beams deflected by the deflecting unit onto the surface of a photosensitive member. The scanning optical unit is set such that lateral chromatic aberration is overcorrected. In addition, among angles formed between each laser beam incident on the surface of the photosensitive member and the normal at the surface of the photosensitive member in a sub-scanning direction, the oscillation wavelength of the light source that emits a laser beam forming the minimum angle is set to a value smaller than the oscillation wavelength of the light source that emits a laser beam forming the maximum angle.
    • 多光束扫描光学系统包括多个光源,偏转单元,其偏转从光源发射的多个激光束;以及扫描光学单元,其将由偏转单元偏转的激光束聚焦到 感光部件。 扫描光学单元被设置为使得横向色差被过度校正。 此外,在入射到感光构件的表面的每个激光束与在副扫描方向上的感光构件的表面处的法线之间形成的角度中,发射形成最小的激光束的光源的振荡波长 角度被设定为小于发出形成最大角度的激光束的光源的振荡波长的值。
    • 10. 发明授权
    • Tractor-feed unit
    • 拖拉机供料单元
    • US5887998A
    • 1999-03-30
    • US940953
    • 1997-10-08
    • Yutaka Ishikawa
    • Yutaka Ishikawa
    • B41J11/26B41J11/30B41J11/32B65H20/20
    • B41J11/30
    • The tractor-feed unit has a pair of first and a pair of second rollers rotatably supported by frame members. A pair of endless tractor belts are wound around the first and second pair of rollers. The tractor belt has protrusions, with which sprocket holes formed in a continuous sheet are engaged. A central portion of each of the frame members is bent to form a guide member, which is engaged with an upper and peripheral edge of a tractor belt, so that a tractor belt is deflected downward. Thus, the protrusions are separated from the sprocket holes to a position, corresponding to a guide member, below the continuous sheet.
    • 拖拉机供给单元具有由框架构件可旋转地支撑的一对第一和第二对第二辊。 一对无端拖拉机皮带卷绕在第一和第二对辊子周围。 拖拉机带具有突出部,其中形成在连续片中的链轮链接。 每个框架构件的中心部分被弯曲以形成与拖拉机带的上边缘和周边边缘接合的引导构件,使得拖拉机带向下偏转。 因此,突起从链轮孔分离到与引导构件相对应的连续片下方的位置。