公开(公告)号：US4620768A

公开(公告)日：1986-11-04

申请号：US494076

申请日：1983-05-12

申请人： Kimio Tatsuno ,  Keiji Kataoka ,  Yoshifumi Homma ,  Yoshifumi Ono

发明人： Kimio Tatsuno ,  Keiji Kataoka ,  Yoshifumi Homma ,  Yoshifumi Ono

IPC分类号： G02B26/12 ,  G02B27/00 ,  H04N1/113 ,  G02B27/17 ,  G02B7/02

CPC分类号： G02B27/0031 ,  G02B26/125 ,  H04N1/1135

摘要： An optical scanning system wherein a light beam from a laser source is reflected by a rotating polygonal mirror and focused by a scanning lens into a scanning beam spot on the drum surface. A cylindrical lens disposed between the scanning lens and the drum for correcting the unevenness of the scanning line pitch caused by the incline of the each facet of the polygonal mirror has a curvature in the scanning direction of the beam so that optimal focal points of the scanning beam spot align on a straight line.

摘要翻译： 一种光学扫描系统，其中来自激光源的光束被旋转的多面镜反射并被扫描透镜聚焦到鼓表面上的扫描光束点中。 设置在扫描透镜和滚筒之间的柱面透镜，用于校正由多面镜的每个面的倾斜引起的扫描线间距的不均匀性，在该光束的扫描方向上具有曲率，使得扫描的最佳焦点 光束点在直线上对齐。

公开(公告)号：US4513300A

公开(公告)日：1985-04-23

申请号：US504380

申请日：1983-06-14

申请人： Kimio Tatsuno ,  Susumu Saito ,  Shoichi Ito ,  Isamu Terashima ,  Yoshifumi Homma ,  Mitsugu Asano ,  Yoshifumi Ono

发明人： Kimio Tatsuno ,  Susumu Saito ,  Shoichi Ito ,  Isamu Terashima ,  Yoshifumi Homma ,  Mitsugu Asano ,  Yoshifumi Ono

IPC分类号： H01S5/042 ,  B41J2/44 ,  G03G15/04 ,  G06K15/12 ,  G09G3/02 ,  H04N1/23 ,  G01D15/14

CPC分类号： G06K15/1214

摘要： An apparatus for driving a semiconductor laser for use in a laser-beam printer, in which a laser beam from the laser is deflected so as to scan a light-sensitive drum and a light-sensitive detector placed in the vicinity of one edge of the drum, comprises a first device for determining the operation level for the laser when it scans the drum to record information thereon, a second device for determining the operation level for the laser when it scans the detector to provide a scanning start pulse signal and a controller for controlling the first and second devices so that they are alternately enabled to determine the intensity of the laser beam depending upon whether the drum or the detector is scanned, whereby the intensity of the laser beam is allowed to be adjusted in accordance with the varying light-sensitivity of the drum without fluctuating the instant of generation of the scanning start pulse signal.

摘要翻译： 一种用于驱动用于激光束打印机的半导体激光器的装置，其中来自激光器的激光束被偏转，以扫描感光鼓和感光探测器，该感光鼓位于该激光束的一个边缘附近 鼓，包括第一装置，用于当扫描滚筒以在其上记录信息时确定激光器的操作电平;第二装置，用于当扫描激光器扫描检测器以提供扫描开始脉冲信号时确定激光器的操作电平;以及控制器 用于控制第一和第二装置，使得它们交替地能够根据鼓或检测器是否被扫描来确定激光束的强度，从而允许根据变化的光来调整激光束的强度 鼓的灵敏度，而不会产生扫描开始脉冲信号的瞬间。

公开(公告)号：US4612555A

公开(公告)日：1986-09-16

申请号：US627891

申请日：1984-07-05

申请人： Jinichi Hongou ,  Yoshifumi Homma ,  Shoichi Ito ,  Kimio Tatsuno

发明人： Jinichi Hongou ,  Yoshifumi Homma ,  Shoichi Ito ,  Kimio Tatsuno

IPC分类号： G02B26/12 ,  G03G15/04 ,  G06K15/12 ,  H04N1/113 ,  H04N1/401 ,  G01D15/14 ,  G01D9/42 ,  H04N1/21

CPC分类号： H04N1/4015 ,  G06K15/1209

摘要： In a laser beam scanner apparatus for scanning the surface of a photosensitive drum or a document to be read by deflecting a laser beam emitted from a laser diode with a deflector, there is provided a drive current control circuit for controlling the magnitude of drive current of said laser diode on the basis of a beam deflection angle of said deflector.

摘要翻译： 在用于通过偏转从激光二极管发射的激光束偏转来扫描感光鼓的表面或待读取的文档的激光束扫描仪装置中，提供了一种用于控制驱动电流的大小的驱动电流控制电路 所述激光二极管基于所述偏转器的光束偏转角。

公开(公告)号：US5081544A

公开(公告)日：1992-01-14

申请号：US448206

申请日：1989-12-08

申请人： Kazuo Kikuchi ,  Yoshifumi Homma

发明人： Kazuo Kikuchi ,  Yoshifumi Homma

IPC分类号： B41J2/44 ,  G02B26/10 ,  G03G15/04 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/36

CPC分类号： H04N1/1135 ,  H04N1/053 ,  H04N1/12 ,  H04N2201/0471

摘要： An optical scanning apparatus includes a light source, an image forming optical unit, a deflection unit and an optical beam detection unit provided inside a deflection area of the optical beam, the optical beam detection unit receiving the optical beam and generating a synchronizing signal. The optical beam detecting unit includes a unidirectional converging optical unit. This unidirectional converging optical unit is provided on an optical path of the optical beam irradiating the scanned surface for further converging the optical beam in a direction perpendicular to the direction of scanning in addition to the convergence performed by the image forming optical unit, so that the optical beam irradiating a light receiving surface of the optical beam detection unit can be focused in advance of the light-receiving surface of the optical beam detection unit in the above direction. In consequence, the allowable range of a shift of the scanning path of the optical beam caused by the manufacturing errors of the deflection unit and of a shift of an optical axis caused by the fine adjustment errors or strains of the supporting members can be increased. It is thus possible to provide an optical beam scanning apparatus which has a simple configuration and which enables the accuracy with which the position of the optical beam is detected to be improved.

摘要翻译： 光学扫描装置包括设置在光束的偏转区域内的光源，成像光学单元，偏转单元和光束检测单元，光束检测单元接收光束并产生同步信号。 光束检测单元包括单向会聚光学单元。 除了由图像形成光学单元进行的会聚之外，该单向会聚光学单元设置在照射扫描表面的光束的光路上，用于使光束在垂直于扫描方向的方向上进一步会聚， 可以在光束检测单元的光接收表面沿着上述方向聚焦照射光束检测单元的光接收表面的光束。 结果，可以增加由偏转单元的制造误差引起的光束的扫描路径的偏移的容许范围以及由微调整误差或支撑构件的应变引起的光轴的偏移。 因此，可以提供一种具有简单结构的光束扫描装置，能够提高检测光束位置的精度。

公开(公告)号：US4809042A

公开(公告)日：1989-02-28

申请号：US67015

申请日：1987-06-29

申请人： Yoshifumi Homma

发明人： Yoshifumi Homma

IPC分类号： B41J2/47 ,  G02B13/00 ,  G02B26/12 ,  H04N1/113 ,  G03G15/00

CPC分类号： H04N1/1135 ,  B41J2/471 ,  G02B13/0005 ,  G02B26/127

摘要： A laser beam printer, in which a laser beam outputted by a laser diode pulse-modulated and controlled is deviated to be swept by means of a polygon mirror and folded by a reflecting mirror, after having passed through an F.theta. lens including two single lenses, so that it traverses the space between the two single lenses and reaches a light sensitive drum in order to expose it thereto.

摘要翻译： 脉冲调制和控制的激光二极管输出的激光束在通过包括两个单透镜的Fθ透镜之后，通过多面镜被反射镜扫过并被反射镜折叠的激光束打印机 使得它穿过两个单个透镜之间的空间并到达感光鼓以便暴露于其中。

公开(公告)号：US5132728A

公开(公告)日：1992-07-21

申请号：US521524

申请日：1990-05-10

申请人： Masafumi Suzaki ,  Tsugio Kikuchi ,  Yousuke Nagano ,  Yoshifumi Homma ,  Kenichi Ebata

发明人： Masafumi Suzaki ,  Tsugio Kikuchi ,  Yousuke Nagano ,  Yoshifumi Homma ,  Kenichi Ebata

IPC分类号： G03G15/00 ,  G03G15/04 ,  G03G21/00 ,  G03G21/16

CPC分类号： G03G15/757 ,  Y10T403/7018

摘要： An electrophotography printer includes a drum formed of a non-magnetic cylindrical body having an outer circumferential surface to which a photosensitive material is applied, end brackets attached to opposite ends of the drum, and a drum shaft for transmitting a driving torque to the drum. A connection structure between the drum and the drum shaft includes end bracket shafts provided on the end brackets, a hole formed in the drum shaft so as to be capable of engaging with one of the end bracket shafts, parallel pins provided on the end bracket shafts so as to be perpendicular to the axes thereof, and at least one taper groove formed in an end portion of the drum shaft. When the drum is housed, one of the parallel pins and the taper groove engage with each other while the whole of the drum is pressed toward the drum shaft by an elastic member, thereby reducing the non-uniformity of the rotation of the drum.

摘要翻译： 电子照相打印机包括由非磁性圆柱形主体形成的滚筒，该圆筒体具有一个外圆周表面，一个感光材料被施加到该外圆周表面上，一个安装在滚筒两端的端托架和一个用于将驱动扭矩传递到滚筒的鼓轴。 鼓和鼓轴之间的连接结构包括设置在端托架上的端托架轴，形成在鼓轴中的孔，以便能够与端托架轴中的一个接合，设置在端托架轴上的平行销 使其垂直于其轴线，以及形成在鼓轴的端部中的至少一个锥形槽。 当容纳滚筒时，平行销和锥形槽之一彼此接合，同时通过弹性构件将整个滚筒压向鼓轴，从而减小滚筒的旋转不均匀性。