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公开(公告)号：US20030067530A1
公开(公告)日：2003-04-10
申请号：US09970990
申请日：2001-10-05
发明人： Daisuke Ishikawa , Koji Tanimoto , Kenichi Komiya , Koji Kawai
IPC分类号： B41J002/435 , B41J002/47
CPC分类号： H04N1/053 , G02B26/127 , G06K15/1219 , H04N1/1135 , H04N1/12 , H04N1/1911 , H04N2201/0082 , H04N2201/02439 , H04N2201/04712 , H04N2201/04734 , H04N2201/04744 , H04N2201/04749 , H04N2201/04762 , H04N2201/04794
摘要： A light beam is scanned in the main scanning direction on a scanned face. The light beam is detected by a pair of sensors arranged on the scanned face or a position equivalent thereto and is converted to an electric signal. A processing circuit having a plurality of operational amplifiers corrects electric signals from the pair of sensors based on a correction signal and integrates a difference between these electric signals. A correction amount of the correction signal is set based on a value integrated by the processing circuit and an offset amount present in the processing circuit.
摘要翻译： 在扫描面上沿主扫描方向扫描光束。 光束由布置在扫描面上的一对传感器或与其相当的位置检测，并被转换为电信号。 具有多个运算放大器的处理电路基于校正信号校正来自一对传感器的电信号，并且对这些电信号之间的差进行积分。 基于由处理电路积分的值和存在于处理电路中的偏移量来设定校正信号的校正量。
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公开(公告)号：US20030117483A1
公开(公告)日：2003-06-26
申请号：US10022699
申请日：2001-12-20
发明人： Daisuke Ishikawa , Koji Tanimoto , Kenichi Komiya , Koji Kawai
IPC分类号： B41J002/435
CPC分类号： H04N1/00018 , G02B26/123 , H04N1/00002 , H04N1/00037 , H04N1/0005 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04731 , H04N2201/04734 , H04N2201/04744
摘要： When a light beam scans a scanned surface in a horizontal scan direction, a sensor is arranged on the scanned surface or a position equivalent to the scanned surface. The sensor converts a light quantity of the light beam into an electric signal to be output. The light beam's passage position is gradually moved in a vertical scan direction to detect a maximum value of the electric signal output from the sensor. When the detected maximum value is smaller than a specified reference value, the light beam is determined to be defocused.
摘要翻译： 当光束沿水平扫描方向扫描扫描的表面时，传感器被布置在扫描的表面上或与扫描表面等同的位置。 传感器将光束的光量转换为要输出的电信号。 光束的通过位置在垂直扫描方向上逐渐移动，以检测从传感器输出的电信号的最大值。 当检测到的最大值小于指定的参考值时，确定光束散焦。
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公开(公告)号：US20030226960A1
公开(公告)日：2003-12-11
申请号：US10457504
申请日：2003-06-10
发明人： Daisuke Ishikawa , Koji Tanimoto , Kenichi Komiya , Koji Kawai
IPC分类号： H01J003/14
CPC分类号： H04N1/113
摘要： A main control section controls a movable beam a such that a passage position thereof may come to a center of a gap between a sensor SK and a sensor SJ, and measures an output difference between a sensor SP and a sensor SO. In this case, the main control section successively measures an output difference between the sensors SP and SO while moving the movable beam a to the center of the gap between the sensors SK and SJ. Similarly, the main control section controls the movable beam a such that the passage position thereof may come to a center of a gap between the sensor SJ and a sensor SI.
摘要翻译： 主控制部控制可动光束a，使得其通过位置可以到达传感器SK和传感器SJ之间的间隙的中心，并且测量传感器SP和传感器SO之间的输出差。 在这种情况下，主控制部分在将可移动光束a移动到传感器SK和SJ之间的间隙的中心的同时连续测量传感器SP和SO之间的输出差。 类似地，主控制部分控制可动光束a使得其通过位置可以到达传感器SJ和传感器SI之间的间隙的中心。
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公开(公告)号：US20030227537A1
公开(公告)日：2003-12-11
申请号：US10457742
申请日：2003-06-10
发明人： Koji Kawai , Koji Tanimoto , Kenichi Komiya , Daisuke Ishikawa
IPC分类号： B41J002/435
CPC分类号： G02B26/123 , B41J2/473
摘要： An input value Y of digital data with respect to a D/A conversion unit for coarse adjustment and an input value X of digital data with respect to a D/A conversion unit for fine adjustment are controlled so as to allow a galvano-mirror to rotate in a direction in which a setting position of a laser beam B is within a predetermined position.
摘要翻译： 相对于用于粗调的D / A转换单元的数字数据的输入值Y和相对于用于微调的D / A转换单元的数字数据的输入值X被控制以允许电流镜 在激光束B的设定位置处于预定位置的方向上旋转。
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公开(公告)号：US20030202086A1
公开(公告)日：2003-10-30
申请号：US10134488
申请日：2002-04-30
发明人： Kenichi Komiya , Koji Tanimoto , Daisuke Ishikawa , Koji Kawai
IPC分类号： B41J015/14 , B41J027/00
CPC分类号： G06K15/1219 , B41J2/473
摘要： A light beam scanning apparatus controls a scan position for a light beam with a first light volume so that output from a sensor is adjusted to a target value. Further, the light beam scanning apparatus controls a scan position for the light beam with a second light volume so that output from the sensor is adjusted to the target value.
摘要翻译： 光束扫描装置控制具有第一光量的光束的扫描位置，使得将传感器的输出调节到目标值。 此外，光束扫描装置控制具有第二光量的光束的扫描位置，从而将传感器的输出调节到目标值。
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6.发明申请公开(公告)号：US20020154204A1
公开(公告)日：2002-10-24
申请号：US10171682
申请日：2002-06-17
发明人： Koji Tanimoto , Kenichi Komiya , Jun Sakakibara , Koji Kawai
IPC分类号： G03G015/01 , G03G015/04
CPC分类号： H04N1/233 , G03G2215/0119 , H04N1/1135 , H04N1/12 , H04N1/2369 , H04N1/295 , H04N1/506 , H04N2201/0471 , H04N2201/04729 , H04N2201/04744 , H04N2201/33378
摘要： An image forming apparatus maintains a constant beam scanning state so that, light beams scan each drum always in the same state once a desired color overlapping accuracy is obtained by controlling color registration in color image formation. This mechanism achieves constantly fine color overlapping without forming a test pattern several times or consuming toner unnecessarily. A beam passage switch is provided in a laser scanning system. Sensors provided near each photosensitive drum determine whether each light beam has scanned a certain portion with no inclination or a certain scanning area, or whether each image magnification provides a desired size. Sensors for detecting scanning light beam obtains the center of light beam in accordance with information on a point at which the sensors start to respond and another point at which they cease responding, for performing several types of control based on the positional information, which provides correct information even though the size or power is different over sevral light beam.
摘要翻译： 图像形成装置保持恒定的光束扫描状态，使得一旦通过控制彩色图像形成中的颜色配准获得期望的颜色重叠精度，光束将始终处于相同的状态。 这种机制实现了不间断地形成测试图案多次或不必要地消耗调色剂的颜色重叠。 光束通过开关设置在激光扫描系统中。 设置在每个感光鼓附近的传感器确定每个光束是否扫描没有倾斜或某个扫描区域的某个部分，或者每个图像放大是否提供期望的尺寸。 用于检测扫描光束的传感器根据关于传感器开始响应的点的信息和其停止响应的另一个点获得光束中心，用于基于提供正确的位置信息执行几种类型的控制 信息即使大小或功率不同于三光束。
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