公开(公告)号：US5212381A

公开(公告)日：1993-05-18

申请号：US747176

申请日：1991-08-19

Applicant: James J. Appel ,  Thomas L. Paoli

Inventor： James J. Appel ,  Thomas L. Paoli

IPC: G02B26/10 ,  G02B5/04 ,  G02B26/12 ,  G02B27/00 ,  G02F1/29 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12

CPC classification number: G02B27/0031 ,  G02B5/04 ,  H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04763

Abstract: A method of slow, or process, scan direction spot registration or position control in an optical output device, such as a raster output scanner (ROS), may be facilitated by interposing in the image path an electro-optic element whose angular dispersion varies for a given wavelength as a function of the electrical bias applied to it. By orienting the electro-optic element such that dispersion control is perpendicular to the fast or line scan direction of the ROS, varying the electrical bias applied to it varies the dispersion in the slow scan direction. The electro-optic element may be, for example, a prism of AlGaAs. Bias applied to the electro-optic element may be in response to the output of a means for detecting and quantifying such positional errors and/or in response to predetermined correction information output from a processor controlled memory unit or the like. Spot position for single or multiple beam optical output device may be achieved.

Abstract translation: 在诸如光栅输出扫描器（ROS）的光学输出装置中，缓慢或处理扫描方向点对位或位置控制的方法可以通过将影像路径中的角度色散变化的电光元件插入到 给定波长作为施加到其上的电偏压的函数。 通过使电光元件定向使得色散控制垂直于ROS的快速或线扫描方向，改变施加到其上的电偏压改变慢扫描方向上的色散。 电光元件可以是例如AlGaAs的棱镜。 应用于电光元件的偏压可以响应于用于检测和量化这种位置误差的装置的输出和/或响应于从处理器控制的存储器单元等输出的预定校正信息。 可以实现单光束或多光束光输出装置的光点位置。

公开(公告)号：US5175636A

公开(公告)日：1992-12-29

申请号：US535743

申请日：1990-06-08

Applicant: Melvin E. Swanberg

Inventor： Melvin E. Swanberg

IPC: H04N1/053 ,  H04N1/113 ,  H04N1/12

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04774

Abstract: A scanner system includes a light source for producing a light beam and a director that directs the light beam to a spot on a surface to be scanned moving the spot across the surface along a scan line of predetermined length in a series of scan cycles. The scanner system has a pixel clock for producing a train of clock pulses during each of the scan cycles configured so that some of the clock pulses are spaced apart by a first time interval and others are spaced apart by a longer second time interval in order to maintain timing of the clock pulses according to spot position along the scan line in a manner that compensates for scanner non-linearity in order to reduce pixel position distortion. The pixel clock includes a reference clock for producing a train of reference pulses having a period such that at least M reference pulses occur during the time the spot moves from a first end of the scan line to a point along the scan line that is a distance from the first end of the scan line equal to L/N, where L is the length of the scan line, M is a predetermined integer, and N is a predetermined integral number of pixel positions along the scan line. The first time interval represents the occurrence of M reference pulses and the second time interval represents the occurrence of M+I reference pulses, where I is an integer.

Abstract translation: 扫描器系统包括用于产生光束的光源和导向器，其将光束引导到待扫描表面上的点，沿着一系列扫描周期中的预定长度的扫描线在该表面上移动斑点。 扫描仪系统具有像素时钟，用于在每个扫描周期期间产生一串时钟脉冲，其被配置为使得一些时钟脉冲被间隔开第一时间间隔，而另一些时钟脉冲间隔较长的第二时间间隔，以便 根据扫描线的光点位置，以补偿扫描仪非线性的方式保持时钟脉冲的定时，以减少像素位置失真。 像素时钟包括用于产生一系列参考脉冲的参考时钟，所述参考脉冲具有周期，使得在点从扫描线的第一端移动到沿着扫描线的点为止的距离期间至少出现M个参考脉冲 从扫描线的第一端等于L / N，其中L是扫描线的长度，M是预定的整数，N是沿扫描线的像素位置的预定整数。 第一时间间隔表示M个参考脉冲的出现，第二时间间隔表示M + I参考脉冲的出现，其中I是整数。

公开(公告)号：US5164745A

公开(公告)日：1992-11-17

申请号：US605684

申请日：1990-10-30

Applicant: Takashi Matsuoka

Inventor： Takashi Matsuoka

IPC: B41J2/44 ,  G03G15/04 ,  G06K15/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12

CPC classification number: H04N1/053 ,  G06K15/1219 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04786

Abstract: A laser beam emitted from a laser is detected by a photosensor, and a flip-flop is preset by a detection signal output from the photosensor. A timer is driven in accordance with a preset output from the flip-flop, and a timer output is generated after a lapse of a predetermined period of time. The laser is again driven by the timer output to emit a laser beam. While, another timer is driven in response to a front edge of the preset output of the flip-flop to generate a horizontal synchronizing signal.

公开(公告)号：US5144135A

公开(公告)日：1992-09-01

申请号：US689268

申请日：1991-05-24

Applicant: Jules Hendrix ,  Arno Lentfer

Inventor： Jules Hendrix ,  Arno Lentfer

IPC: H04N1/00 ,  H04N1/029 ,  H04N1/04 ,  H04N1/053 ,  H04N1/10

CPC classification number: H04N1/053 ,  H04N1/029 ,  H04N1/10 ,  H04N2201/0424 ,  H04N2201/0471 ,  H04N2201/04756

Abstract: An improved image plate scanner (10) for scanning a circular videodisk (12) exposed by X-rays, with image elements (40) spaced a distance (radius R) away from the image plate central point. The image plate is scanned with laser beams. A videodisk carrier (13) on which the image plate is detachably mounted, is drivable with the aid of an electromotor (11), with adjustable rotation speeds. An image element scanning unit (15;115) is radially displaceable across the image plate by means of a drive assembly (14,18) with presettable speed of advance. A laser light supply (42) and an optical image element scanning facility (30a) are parts of an optoelectronic measured value transmission unit, as are a photomultiplier (36) and a signal conditioner. During the light scanning for recording the image stored on the image plate maximum light yield is obtained for the emitted light. The image plate scanner is constructed in a compact manner so as to facilitate operation. The image element scanning unit (15;115) can be guided across the image plate while scanning each image element ( 40) at the same tangential speed, provision being preferably made for the laser light supply (42) to include a collector lens (44), two laser light sources (43a,43b), and an optical filter (46) by means of which the laser light is focussed. The drive shaft (18) of the electromotor (11) is connected by a gear drive to a power spindle (26). The image element scanning unit (15) is translatorily displaceable radially over the image plate (12).

Abstract translation: PCT No.PCT / EP90 / 01612 Sec。 371日期1991年5月24日 102（e）日期1991年5月24日PCT提交1990年9月22日PCT公布。 出版物WO91 / 04629 日本1991年4月4日。一种用于扫描由X射线曝光的圆形视盘（12）的改进的图像平板扫描器（10），与图像中心点间隔开距离（半径R）的图像元素（40）。 用激光束扫描图像板。 可拆卸地安装有图像板的视盘载体（13）可借助电动机（11）以可调节的转速驱动。 图像元素扫描单元（15; 115）可通过具有可预先设定的提前速度的驱动组件（14,18）在图像板上径向移动。 激光供应源（42）和光学图像元素扫描设备（30a）是光电测量值传输单元的一部分，光电倍增器（36）和信号调节器也是。 在用于记录的光扫描期间，存储在图像板上的图像对于发射的光获得最大光收率。 图像平板扫描器以紧凑的方式构造，以便于操作。 图像元素扫描单元（15; 115）可以被引导穿过图像板，同时以相同的切向速度扫描每个图像元素（40），优选地为激光供应（42）提供包括收集透镜（44） ），两个激光源（43a，43b）和滤光器（46），通过该滤光器激光被聚焦。 电动机（11）的驱动轴（18）通过齿轮传动连接到动力主轴（26）。 图像元素扫描单元（15）可在图像板（12）的上方径向移位。

公开(公告)号：US5117374A

公开(公告)日：1992-05-26

申请号：US419302

申请日：1989-10-10

Applicant: Howard V. Goetz

Inventor： Howard V. Goetz

IPC: B41J19/18 ,  B41J19/20 ,  G01D5/244 ,  G01D5/245 ,  G01D5/36 ,  G06K15/02 ,  G06K15/10 ,  H04N1/191

CPC classification number: G06K15/105 ,  B41J19/207 ,  G06K15/02 ,  H04N1/1912 ,  G06K2215/101 ,  G06K2215/111 ,  H04N2201/0468 ,  H04N2201/0471 ,  H04N2201/04755

Abstract: Print heads are formed with spaced subheads having nozzles such that all of the lines or pixel rows on a print medium such as a sheet of paper are printed by scanning of the print head along the face of the sheet. The head structures include three subheads, each having nozzles for printing one or more adjacent lines with the subheads being spaced the same number of lines apart as the number of lines each prints; and three subheads spaced the equivalent of seven lines apart, each subhead having three nozzles spaced at the equivalent of alternate lines. The heads are advanced between scans by an equivalent number of lines generally equal to the number of nozzles in the head, whereby all print lines are addressed only once. Apparatus for printing includes the use of pointers in registers to keep track of head structure and location on a print medium for calculating print addresses. A partial page memory is used which wraps around to the beginning from the end. A positive printer carriage position encoder uses an index marker located in the middle of a strip of incremental markers. Sensing of the index marker resets an up/down counter with a value that gives a positive value for all count conditions.

Abstract translation: 打印头形成有具有喷嘴的间隔子头，使得诸如一张纸的打印介质上的所有行或像素行通过沿着纸张的表面扫描打印头来打印。 头部结构包括三个子头部，每个分针头具有用于打印一个或多个相邻线的喷嘴，其中子头部分隔开与每个打印线数相同的相同数量的线; 和三个分水平分隔相当于七行的分水头，每个分水头具有三个喷嘴，间隔相当于交替线。 头部在扫描之间通过相当数量的通常等于头部中的喷嘴数目的线进行，由此所有打印线仅被寻址一次。 用于打印的装置包括在寄存器中使用指针来跟踪打印介质上的打印头结构和位置以计算打印地址。 使用部分页面存储器从最后开始包围。 正打印机托架位置编码器使用位于增量标记条的中间的索引标记。 索引标记的检测使用给所有计数条件的正值的值来复位上/下计数器。

公开(公告)号：US5111062A

公开(公告)日：1992-05-05

申请号：US751391

申请日：1991-08-28

Applicant: Timothy M. Hunter ,  Hung M. Pham ,  John L. Zanghi

Inventor： Timothy M. Hunter ,  Hung M. Pham ,  John L. Zanghi

IPC: H04N1/113 ,  H04N1/053 ,  H04N1/12

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04786

Abstract: An apparatus and method of reducing pixel clock jitter in a raster scanner having a oscillator which generates a pixel clock signal and a start of scan sensor for generating a start of scan signal, includes the generation of an inverted pixel clock signal and an inverted start of scan signal. Based on which of the pixel clock signal or the inverted pixel clock signal has a rising edge closer to the start of scan signal, one of the pixel clock or inverted pixel clock signal is selected to replace the original pixel clock signal. Further selections are prevented from occurring until a subsequent start of scan signal is detected.

公开(公告)号：US5083023A

公开(公告)日：1992-01-21

申请号：US408005

申请日：1989-09-15

Applicant: Ichirou Miyagawa

Inventor： Ichirou Miyagawa

IPC: G02B3/00 ,  G21K1/16 ,  H04N1/053 ,  H04N1/113

CPC classification number: G02B27/0905 ,  G21K1/16 ,  H04N1/053 ,  G02B3/0062 ,  G02B3/0075 ,  H04N1/1135 ,  H04N2201/0471

Abstract: A composite light source unit including a plurality of semiconductor lasers disposed in a housing, a plurality of collimator optical systems for converting the laser beams to parallel laser beams, respectively, and a combining optical system for combining all the laser beams except one as a group of laser beams having close, parallel optical axes, respectively, extending in a direction different from the direction of said one laser beam, whereby said one laser beam and the group of laser beams are emitted from the housing in different directions. Alternatively, the combining optical system combines the laser beams as a group of laser beams having close, parallel optical axes, respectively, and emits the group of laser beams out of the housing, one of the laser beams emitted out of the housing having a different optical property than that of the other laser beams. Said one laser beam can easily be separated from the other laser beams, and will be used as a synchronizing beam in a scanning device.

Abstract translation: 一种复合光源单元，包括设置在壳体中的多个半导体激光器，分别将激光束转换为平行激光束的多个准直器光学系统和用于将除了一个组之外的所有激光束组合的组合光学系统 分别具有沿与所述一个激光束的方向不同的方向延伸的近似的平行光轴的激光束，由此所述一个激光束和一组激光束从壳体沿不同的方向发射。 或者，组合光学系统将激光束组合为具有近似平行光轴的一组激光束，并将该组激光束发射出壳体，从外壳中发射的激光束之一具有不同的 光学性能优于其他激光束。 所述一个激光束可以容易地与其他激光束分离，并且将在扫描装置中用作同步光束。

公开(公告)号：US5059987A

公开(公告)日：1991-10-22

申请号：US504883

申请日：1990-04-05

Applicant: Yoshinobu Takeyama ,  Susumu Imakawa

Inventor： Yoshinobu Takeyama ,  Susumu Imakawa

IPC: G06K15/12 ,  H04N1/04 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12

CPC classification number: H04N1/0411 ,  G06K15/1219 ,  H04N1/0402 ,  H04N1/0443 ,  H04N1/0455 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04772

Abstract: A synchronizing signal generating system for a laser scanner comprises a source for emitting a first laser beam for scanning and a second laser beam for synchronization of scans by the first laser beam, a deflector for causing a scan of a medium by the first laser beam and a scan of a grating by the second laser beam, a converging optical system for converging the second laser beam transmitted through the grating, a light receiving system for receiving the second laser beam converged by the converging optical system and for generating a reference pulse signal, a circuit for controlling the source responsive to the reference pulse signal so as to synchronize a scan timing of the first laser beam and comprising a PLL circuit for generating a synchronizing signal which has a frequency N times a frequency of the reference pulse signal in response to the reference pulse signal and a control circuit for controlling a value of N depending on the recording density, and a driving circuit for driving the source of synchronism with the synchronizing signal depending on input information data.

Abstract translation: 一种用于激光扫描器的同步信号发生系统，包括用于发射用于扫描的第一激光束的源和用于由第一激光束扫描同步的第二激光束，用于引起第一激光束对介质进行扫描的偏转器， 通过第二激光束扫描光栅，会聚光学系统，用于会聚透过光栅的第二激光束;光接收系统，用于接收由会聚光学系统会聚的第二激光束，并用于产生参考脉冲信号; 用于响应于所述参考脉冲信号控制所述源的电路，以便使所述第一激光束的扫描定时同步，并且包括用于产生具有响应于所述基准脉冲信号的频率的N倍频率的同步信号的PLL电路 参考脉冲信号和用于根据记录密度控制N值的控制电路，以及用于dr的驱动电路 根据输入信息数据，使同步信号源同步。

公开(公告)号：US5055860A

公开(公告)日：1991-10-08

申请号：US525107

申请日：1990-05-18

Applicant: Kazunori Bannai

Inventor： Kazunori Bannai

IPC: G06K15/12 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12

CPC classification number: H04N1/0473 ,  G06K15/1219 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04756 ,  H04N2201/0476

Abstract: An image forming apparatus for forming an image by deflecting a light beam signal modulated by an image signal onto a photoconductive element by a polygonal mirror to electrostatically form a latent image and developing the latent image. A main scanning synchronization detector is located in the vicinity of the photoconductive element for setting up synchronization in the main scanning direction. A displacement detector detects a distance over which the photoconductive element has been displaced over a period of time associated with a subscanning pitch. Correcting control is driven in response to the output signals of the main scanning synchronization detector and displacement detector. The light beam signal is so deflected in the subscanning direction as to correct an error in the subscanning pitch.

Abstract translation: 一种图像形成装置，用于通过将由图像信号调制的光束信号通过多面镜偏转到光电导元件上以静电形成潜像并显影潜像来形成图像。 主扫描同步检测器位于感光元件附近，用于在主扫描方向上设置同步。 位移检测器检测光电元件在与副扫描间距相关联的时间段内已经移位的距离。 响应于主扫描同步检测器和位移检测器的输出信号驱动校正控制。 光束信号在副扫描方向上如此偏转，以纠正副扫描间距的误差。

公开(公告)号：US4992655A

公开(公告)日：1991-02-12

申请号：US430867

申请日：1989-11-02

Applicant: David J. Shelander

Inventor： David J. Shelander

IPC: G02B26/10 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12

CPC classification number: G02B26/10 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04755

Abstract: A very stable deflection system usable with a beam of radiant energy incorporates a self-resonant scanning galvanometer located within an evacuated chamber. The chamber has a hermetic radiant energy transmissive window. An exterior laser source provides a beam of monochromatic light which is directed onto the mirror of the galvanometer. Repetitive deflection of the galvanometer mirror at a predetermined frequency results in the beam being projected onto a target so as to form a very stable and repeatable scanning line. Movement of the target provides a multi-line raster on which an image can be formed.

Abstract translation: 可用于辐射能束的非常稳定的偏转系统包括位于真空室内的自谐振扫描电流计。 该室具有密闭的辐射能透射窗。 外部激光源提供被引导到电流计反射镜上的单色光束。 电流计反射镜以预定频率的重复偏转导致光束投射到目标上，以形成非常稳定和可重复的扫描线。 目标的移动提供可以形成图像的多行光栅。