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1. 发明授权

US06549265B1 Image formation apparatus and method of stabilizing the emission level of semiconductor laser source used therein 失效
标题翻译：稳定其中使用的半导体激光源的发射水平的图像形成装置和方法
公开(公告)号：US06549265B1
公开(公告)日：2003-04-15
申请号：US09662180
申请日：2000-09-14
申请人： Jun Sakakibara , Koji Tanimoto , Kenichi Komiya , Toshimitsu Ichiyanagi , Naoaki Ide , Koji Kawai
发明人： Jun Sakakibara , Koji Tanimoto , Kenichi Komiya , Toshimitsu Ichiyanagi , Naoaki Ide , Koji Kawai
IPC分类号： G03B2772
CPC分类号： H04N1/4005 , G06K15/1214
摘要： The emission level of a laser source at the non-imaging time when image data “0” is input and the emission level at the imaging time when image data “1” is input are controlled so that each of them becomes a desired level. The light output intensity is stabilized at all times regardless of variations in ambient temperature. As a result, images uniform in density can be obtained.
摘要翻译：当输入图像数据“0”时的非成像时间的激光源的发射电平和输入图像数据“1”时的成像时间的发射电平被控制，使得它们中的每一个变为期望的电平。无论环境温度如何变化，光输出强度总是稳定。结果，可以获得密度均匀的图像。

2. 发明授权

US06677974B2 Light beam scanning apparatus with a multi-layer mirror structure 失效
标题翻译：具有多层反射镜结构的光束扫描装置
公开(公告)号：US06677974B2
公开(公告)日：2004-01-13
申请号：US09813287
申请日：2001-03-21
申请人： Jun Sakakibara , Koji Tanimoto , Kenichi Komiya , Koji Kawai
发明人： Jun Sakakibara , Koji Tanimoto , Kenichi Komiya , Koji Kawai
IPC分类号： B41J2435
CPC分类号： H04N1/053 , G06K15/1219 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04713 , H04N2201/04734 , H04N2201/04744
摘要： A synchronization signal detector receives a laser beam each time it is scanned in a main scanning direction, and detects a synchronization signal from the received laser beam. An external circuit or the like sets a binary value-determining level for this detector. The binary value-determining level is so determined as not to generate a signal arising from stray light. By this determination, a synchronization error, which is due to stray light, is prevented without adding manufacturing steps to prevent the stray light or without incurring an increase in the cost needed for structural components.
摘要翻译：同步信号检测器每次在主扫描方向上扫描时接收激光束，并从接收的激光束检测同步信号。外部电路等为该检测器设定二进制值确定电平。二进制值确定级别被确定为不产生由杂散光产生的信号。通过这种判断，防止杂散光引起的同步误差，而不添加制造步骤来防止杂散光，或者不会导致结构部件所需的成本增加。

3. 发明授权

US06509921B2 Light beam scanning apparatus with multiple sensors and patterns 有权
标题翻译：具有多个传感器和图案的光束扫描装置
公开(公告)号：US06509921B2
公开(公告)日：2003-01-21
申请号：US09816773
申请日：2001-03-26
申请人： Kenichi Komiya , Koji Tanimoto , Jun Sakakibara , Koji Kawai
发明人： Kenichi Komiya , Koji Tanimoto , Jun Sakakibara , Koji Kawai
IPC分类号： B41J2435
CPC分类号： H04N1/0473 , G06K15/1219 , H04N1/1135 , H04N1/12 , H04N1/1911 , H04N2201/02439 , H04N2201/0471 , H04N2201/04712 , H04N2201/04713 , H04N2201/04732 , H04N2201/04744 , H04N2201/04762 , H04N2201/04794
摘要： Two sawtooth sensor patterns are combined so that they engage with each other. These sensor patterns are arranged so that a light beam passes sawtooth portions in a horizontal scan direction. A light beam's scan position is determined by integrating a difference between output signals from these sensor patterns. It is possible to provide a highly sensitive circuit for processing signals from the sensors and to improve detection accuracy for light beams.
摘要翻译：两个锯齿传感器图案被组合，使得它们彼此接合。这些传感器图案被布置成使得光束在水平扫描方向上通过锯齿形部分。通过对来自这些传感器图案的输出信号之间的差进行积分来确定光束的扫描位置。可以提供用于处理来自传感器的信号的高灵敏度电路，并提高光束的检测精度。

4. 发明授权

US06710793B1 Light beam scanning apparatus and image forming apparatus 失效
标题翻译：光束扫描装置和图像形成装置
公开(公告)号：US06710793B1
公开(公告)日：2004-03-23
申请号：US10305165
申请日：2002-11-27
申请人： Koji Tanimoto , Kenichi Komiya , Daisuke Ishikawa , Koji Kawai , Jun Sakakibara
发明人： Koji Tanimoto , Kenichi Komiya , Daisuke Ishikawa , Koji Kawai , Jun Sakakibara
IPC分类号： B41J2435
CPC分类号： H04N1/047 , G02B26/123 , G02B26/127 , H04N1/1135 , H04N1/12 , H04N1/1911 , H04N2201/02439 , H04N2201/04712 , H04N2201/04729 , H04N2201/04731 , H04N2201/04732 , H04N2201/04744 , H04N2201/04762 , H04N2201/04781 , H04N2201/04789 , H04N2201/04791 , H04N2201/04794
摘要： In an image forming apparatus such as a digital copying machine using a multi-beam optical system, a printing area can be set in the unit equal to or smaller than a clock for image formation by use of a delay pulse for each light beam and the exposure position in the light beam scanning direction (main scanning direction) is always precisely controlled by selecting an optimum set value while the actual light beam position is being checked by use of a sensor.
摘要翻译：在诸如使用多光束光学系统的数字复印机的图像形成装置中，可以通过使用每个光束的延迟脉冲将打印区域设置为等于或小于用于图像形成的时钟的单位，并且在通过使用传感器检查实际光束位置的同时通过选择最佳设定值来始终精确地控制光束扫描方向（主扫描方向）上的曝光位置。

5. 发明授权

US06646668B2 Image forming apparatus for maintaining a constant beam scanning state 失效
标题翻译：用于保持恒定光束扫描状态的图像形成装置
公开(公告)号：US06646668B2
公开(公告)日：2003-11-11
申请号：US10171682
申请日：2002-06-17
申请人： Koji Tanimoto , Kenichi Komiya , Jun Sakakibara , Koji Kawai
发明人： Koji Tanimoto , Kenichi Komiya , Jun Sakakibara , Koji Kawai
IPC分类号： B41J2455
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 several 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即使尺寸或功率在几个光束上不同，信息也是如此。

6. 发明授权

US06462855B1 Light beam scanning apparatus 有权
标题翻译：光束扫描装置
公开(公告)号：US06462855B1
公开(公告)日：2002-10-08
申请号：US09667317
申请日：2000-09-22
申请人： Kenichi Komiya , Koji Tanimoto , Toshimitsu Ichiyanagi , Jun Sakakibara , Koji Kawai
发明人： Kenichi Komiya , Koji Tanimoto , Toshimitsu Ichiyanagi , Jun Sakakibara , Koji Kawai
IPC分类号： G02B2608
CPC分类号： H04N1/0411 , B41J2/473 , G02B26/123 , H04N1/0473 , H04N1/1135 , H04N1/12 , H04N1/1911 , H04N2201/02439 , H04N2201/04734 , H04N2201/04744 , H04N2201/04749 , H04N2201/04762 , H04N2201/04794
摘要： A pair of sensor patterns detect a passage position in a sub-scan direction of a light beam scanned over a surface of a photosensitive drum. The sensor patterns have, for example, trapezoidal shapes and are disposed symmetrical at a position equivalent to a position of the surface to be scanned. The sensor patterns are juxtaposed in a scan direction of the light beam at a predetermined interval therebetween. An output integration value from one of the paired photodetector elements successively increases while an output integration value from the other photodetector element successively decreases in relation to a variation of a passage position of the light beam in the sub-scan direction. On the basis of a difference between the output integration values of the paired sensor patterns, the passage position of the light beam in the sub-scan direction is detected.
摘要翻译：一对传感器图案检测在感光鼓的表面上扫描的光束的副扫描方向上的通过位置。传感器图案具有例如梯形形状，并且在与待扫描表面的位置相当的位置处对称地设置。传感器图案以光束的扫描方向以其间的预定间隔并置。来自成对的光检测器元件中的一个的输出积分值相继地增加，而来自另一光检测器元件的输出积分值相对于沿着副扫描方向的光束的通过位置的变化而相继减小。基于成对的传感器图案的输出积分值之间的差异，检测光束在副扫描方向上的通过位置。

7. 发明授权

US06426767B1 Image forming apparatus for maintaining a constant beam scanning state 失效
标题翻译：用于保持恒定光束扫描状态的图像形成装置
公开(公告)号：US06426767B1
公开(公告)日：2002-07-30
申请号：US09750292
申请日：2000-12-29
申请人： Koji Tanimoto , Kenichi Komiya , Jun Sakakibara , Koji Kawai
发明人： Koji Tanimoto , Kenichi Komiya , Jun Sakakibara , Koji Kawai
IPC分类号： G03G1501
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。

8. 发明授权

US06989851B2 Light beam scanning apparatus 有权
公开(公告)号：US06989851B2
公开(公告)日：2006-01-24
申请号：US10938659
申请日：2004-09-13
申请人： Koji Tanimoto , Kenichi Komiya , Jun Sakakibara , Naoaki Ide , Toshimitsu Ichiyanagi
发明人： Koji Tanimoto , Kenichi Komiya , Jun Sakakibara , Naoaki Ide , Toshimitsu Ichiyanagi
IPC分类号： B41J2/47 , B41J2/435
CPC分类号： B41J2/473 , G02B26/127 , H04N1/0473 , H04N1/1135 , H04N1/1911 , H04N2201/02439 , H04N2201/04712 , H04N2201/04734 , H04N2201/04744 , H04N2201/04749 , H04N2201/04762 , H04N2201/04794
摘要： A light beam position detecting device detects the passage positions of a plurality of light beams for scanning the surface of a photosensitive drum. The light beam position detecting device has a sensor pattern for generating an output which is continuously changed in a wide range with a variation in the passage position of the light beam in a sub-scanning direction perpendicular to a main scanning direction of the light beam. The sensor pattern precisely detects the relative scanning position of the light beam in a wide range. The passage positions of the plurality of light beams for scanning the surface of the photosensitive drum are controlled to a preset position based on the output of the sensor pattern.

9. 发明授权

US06208367B1 Light beam scanning apparatus and image forming apparatus 失效
标题翻译：光束扫描装置和图像形成装置
公开(公告)号：US06208367B1
公开(公告)日：2001-03-27
申请号：US09231878
申请日：1999-01-14
申请人： Koji Tanimoto , Kenichi Komiya , Naoaki Ide , Jun Sakakibara
发明人： Koji Tanimoto , Kenichi Komiya , Naoaki Ide , Jun Sakakibara
IPC分类号： B41J247
CPC分类号： H04N1/4005 , B41J2/473 , H04N1/0402 , H04N1/0411 , H04N1/0414 , H04N1/0443 , H04N1/0455 , H04N1/047 , H04N1/1135 , H04N1/12 , H04N1/1911 , H04N2201/02439 , H04N2201/0471 , H04N2201/04712 , H04N2201/04729 , H04N2201/04731 , H04N2201/04732 , H04N2201/04734 , H04N2201/04744 , H04N2201/04762 , H04N2201/04786 , H04N2201/04789 , H04N2201/04791 , H04N2201/04794
摘要： Four beams are caused to scan a scanning surface in the main scanning direction in parallel. The beams expose the target area between two optical sensors, not the surface of a photosensitive drum, to produce correction data to correct shifts in the exposure positions of the four beams in the main scanning direction with an accuracy of less than a small fraction of one pixel. On the basis of the correction data, an actual image formation area is set on the photosensitive drum. This makes it possible to always control the relative exposure scanning position accurately even when the relationship between the main scanning positions of the light beams is unknown.
摘要翻译：使四个光束平行扫描主扫描方向的扫描面。光束将目标区域暴露在两个光学传感器之间，而不是感光鼓的表面，以产生校正数据，以校正四个光束在主扫描方向上的曝光位置的偏移，精度小于一个像素。基于校正数据，在感光鼓上设置实际的图像形成区域。这使得即使当光束的主扫描位置之间的关系未知时，也可以精确地控制相对曝光扫描位置。

10. 发明授权

US5929891A Light beam scanning apparatus and image forming apparatus 失效
标题翻译：光束扫描装置和图像形成装置
公开(公告)号：US5929891A
公开(公告)日：1999-07-27
申请号：US970801
申请日：1997-11-14
申请人： Kenichi Komiya , Koji Tanimoto , Kunihiko Miura , Naoaki Ide , Jun Sakakibara
发明人： Kenichi Komiya , Koji Tanimoto , Kunihiko Miura , Naoaki Ide , Jun Sakakibara
IPC分类号： B41J2/44 , G02B26/10 , G06K15/12 , H04N1/04 , H04N1/047 , H04N1/113 , H04N1/12 , H04N1/191 , H04N1/17
CPC分类号： G06K15/1219 , H04N1/0473 , H04N1/1135 , H04N1/12 , H04N1/1911 , H04N2201/04712 , H04N2201/04762
摘要： A beam position detector output processor converts an output from a beam position detector into beam position information. A main control unit detects a total offset value of a plurality of operational amplifiers constituting the processor. The detected offset value is used to compensate a determination reference value used to control the sub-scanning position of a beam, or the beam position information obtained from the beam position detector output processor. As a result, the offsets of the operational amplifiers constituting the beam position detector output processor are compensated.
摘要翻译：光束位置检测器输出处理器将来自光束位置检测器的输出转换成光束位置信息。主控制单元检测构成处理器的多个运算放大器的总偏移值。检测到的偏移值用于补偿用于控制光束的副扫描位置的判定基准值或从光束位置检测器输出处理器获得的光束位置信息。结果，补偿构成光束位置检测器输出处理器的运算放大器的偏移。

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