公开(公告)号：WO99017533A1

公开(公告)日：1999-04-08

申请号：PCT/US1998/005608

申请日：1998-03-23

IPC: G02B26/10 ,  G02B26/12 ,  G06K15/12 ,  H04N1/053 ,  H04N1/06 ,  H04N1/113 ,  H04N1/23

CPC classification number: H04N1/0635 ,  G02B26/127 ,  G06K15/1204 ,  H04N1/053 ,  H04N1/0607 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04774 ,  H04N2201/04775 ,  H04N2201/04793 ,  H04N2201/04794

Abstract: A method and system for compensating for scanner facet height error in a laser imaging application including a rotating polygon (30) for directing a laser beam (20) across a dimension of a photographic element (65). The present invention compensates for facet height error by measuring a scan interval for each facet (40, 50) of the rotating polygon (30) and modifies the pixel clock for a subset of pixels of each scan line as a function of variations in scan intervals for the respective facets (40, 50) of the rotating polygon (30). Several advantages of the present invention have been illustrated including the low cost of such a compensation system and technique. Furthermore, the present invention is not limited in accuracy by the pixel clock as are conventional techniques. Furthermore, the modified pixels are evenly distributed over the entire length of the facet's corresponding scan line.

Abstract translation: 一种用于补偿激光成像应用中的扫描器面高度误差的方法和系统，包括用于将激光束（20）引导穿过照相元件（65）的尺寸的旋转多边形（30）。 本发明通过测量旋转多边形（30）的每个小面（40,50）的扫描间隔来补偿面高度误差，并且将每个扫描线的像素子集的像素时钟修改为扫描间隔的变化的函数 对于旋转多边形（30）的各个面（40,50）。 已经说明了本发明的若干优点，包括这种补偿系统和技术的低成本。 此外，本发明不像传统技术那样通过像素时钟的精度来限制。 此外，修改后的像素均匀分布在小平面对应扫描线的整个长度上。

公开(公告)号：WO1997019550A1

公开(公告)日：1997-05-29

申请号：PCT/US1996016036

申请日：1996-10-07

Applicant: IMATION CORP.

Inventor： IMATION CORP. ,  MOE, Edward, J. ,  EDWARDS, William, D. ,  KELLIE, Truman, F. ,  BURY, Michael, R.

IPC: H04N01/50

CPC classification number: H04N1/508 ,  G03G15/0152 ,  G03G15/0168 ,  G03G2215/00156 ,  G03G2215/00164 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04741 ,  H04N2201/04744 ,  H04N2201/04756 ,  H04N2201/04786 ,  H04N2201/04794

Abstract: A system for registration of one or more color separation images on a photoconductor belt prevents misregistration that otherwise can occur between different scan lines and between different latent images due to side-to-side movement of the photoconductor belt. The registration system operates to detect movement of the photoconductor belt (12). Based on the detected movement, the system operates to control modulation of laser beams (46) used to form the latent images to ensure precise registration of the color separation images. As one advantage, the movement of the photoconductor belt can be detected precisely and inexpensively by a photodetector (92) scanned with the same laser beam used for imaging, the photodetector being disposed adjacent the edge (62) of the photoconductor belt.

Abstract translation: 用于在感光鼓带上配准一个或多个分色图像的系统防止由于感光体带的侧向移动而导致的不同扫描线之间和不同潜像之间可能发生的不对准。 配准系统用于检测感光带（12）的移动。 基于检测到的移动，系统操作以控制用于形成潜像的激光束（46）的调制，以确保颜色分离图像的精确对准。 作为一个优点，可以通过用用于成像的相同激光束扫描的光电检测器（92）精确且廉价地检测感光体带的移动，光电检测器设置在与感光带的边缘（62）相邻的位置。

公开(公告)号：WO1997019388A1

公开(公告)日：1997-05-29

申请号：PCT/US1996016479

申请日：1996-10-07

Applicant: IMATION CORP.

Inventor： IMATION CORP. ,  EDWARDS, William, D. ,  BURY, Michael, R. ,  KELLIE, Truman, F.

IPC: G03G15/01

CPC classification number: G03G15/755 ,  G03G15/0152 ,  G03G15/0168 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/506 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04741 ,  H04N2201/04744 ,  H04N2201/04756 ,  H04N2201/04786 ,  H04N2201/04794

Abstract: A system for registration of color separation images on a photoconductor belt (12) in an imaging system operates to detect (76) a position of an edge of the photoconductor belt (12). The registration system detects the position with the same laser scanner used for forming latent images on the photoconductor belt. The registration system includes a belt steering control (103) system that steers the photoconductor belt (12) based on the detected position to reduce deviation of the belt from a continuous transport path. The registration system also may include a scan control system (88) that, based on the detected position, controls the modulation of laser beams scanned to form latent images on the photoconductor belt (12). By controlling belt steering (103) and laser beam scanning (88), the registration system maintains the image quality of a final multi-color image upon transfer of registered color separation images to an output substrate.

Abstract translation: 用于在成像系统的感光带（12）上配准颜色分离图像的系统用于检测（76）感光体带（12）的边缘的位置。 配准系统使用用于在感光带上形成潜像的相同激光扫描仪来检测位置。 该配准系统包括一个皮带转向控制（103）系统，该系统基于检测到的位置转动感光带（12），以减少皮带与连续输送路径的偏差。 登记系统还可以包括扫描控制系统（88），其基于检测到的位置控制扫描的激光束的调制以在感光体带（12）上形成潜像。 通过控制皮带转向（103）和激光束扫描（88），登记系统在将注册的分色图像转移到输出基板时保持最终多色图像的图像质量。

公开(公告)号：WO1996026071A1

公开(公告)日：1996-08-29

申请号：PCT/US1996000455

申请日：1996-01-16

Applicant: OHIO ELECTRONIC ENGRAVERS, INC.

Inventor： OHIO ELECTRONIC ENGRAVERS, INC. ,  SEITZ, David, R. ,  WOODS, Curtis ,  THOMAS, Matthew, A.

IPC: B41C01/04

CPC classification number: H04N1/0678 ,  B41C1/04 ,  H04N1/047 ,  H04N1/06 ,  H04N2201/02416 ,  H04N2201/02439 ,  H04N2201/03158 ,  H04N2201/042 ,  H04N2201/0471 ,  H04N2201/0472 ,  H04N2201/04729 ,  H04N2201/04734 ,  H04N2201/04755 ,  H04N2201/04767 ,  H04N2201/04791 ,  H04N2201/04794

Abstract: A cylindrical engraving system selectively able to engrave either in a helical or circumferential format. An encoder (22) scans index markings on the surface of a cylinder being engraved and generates timing pulses for selective application to one or the other of a helical drive unit (34) or a circumferential drive unit (32) incorporated within the system controller (30). Engraving is performed by an engraving head (14) which is stepped in the axial direction along the workpiece in response to step pulses generated by the selected drive unit. The step pulses may be generated in spaced bursts or at a regular frequency depending upon whether circumferential or helical driving has been selected.

Abstract translation: 圆柱形雕刻系统可以选择性地刻成螺旋或圆周格式。 编码器（22）扫描正被雕刻的圆柱体的表面上的索引标记，并产生用于选择性地施加到并入系统控制器内的螺旋驱动单元（34）或圆周驱动单元（32）中的一个或另一个的定时脉冲 30）。 由雕刻头（14）进行雕刻，所述雕刻头（14）响应于由所选择的驱动单元产生的步进脉冲而沿着工件在轴向上阶梯。 阶跃脉冲可以以间隔的脉冲串或以规律的频率产生，这取决于是选择了圆周驱动还是螺旋驱动。

公开(公告)号：WO1996005694A1

公开(公告)日：1996-02-22

申请号：PCT/US1995008064

申请日：1995-06-26

Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

Inventor： MINNESOTA MINING AND MANUFACTURING COMPANY ,  SCHULTZ, John, C. ,  BROPHY, Christopher, J. ,  JASPERSON, Keith, E.

IPC: H04N05/30

CPC classification number: H04N1/00795 ,  H04N1/047 ,  H04N1/12 ,  H04N3/36 ,  H04N5/32 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04718 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04787 ,  H04N2201/04794

Abstract: A system for compensating for positioning errors in the scanning and digital readout of latent electrostatic images on a photoconductive structure. The photoconductive structure is placed in a cassette or other holder positioned with respect to the readout scanner, which scans across the photoconductive structure in scan patterns of successive pulsed laser spots which will correspond to the pixels of the image. Elongated strip electrodes and charge amplifiers receive charge movements due to the pulse spots of the scanner. The photoconductive structure preferably has a reference strip which can be sensed by the scanner to provide a measure from a standardized Optical Start of Scan, and the Plate Start of Scan. This measurement, referred to as line skew, is a measure of the positioning errors, which will cause displacement of the scan patterns of pulse spots from their expected positions with respect to the elongate strip electrodes. This system provides skew compensation to determine which electrode and which adjacent electrodes correspond to specific scan spots, so that the charge movements received thereby can be properly combined to form the correct charge value for the image pixel represented by each scan spot. In a preferred embodiment, the measurements taken by the skew measurement circuitry are filtered to provide a smoothed measurement of the skew for each line and the incremental skew per line.

Abstract translation: 用于补偿光电导结构上的静电潜像的扫描和数字读出中的定位误差的系统。 光电导结构被放置在相对于读出扫描器定位的盒或其他保持器中，扫描器以对应于图像像素的连续脉冲激光光斑的扫描图案扫描光导结构。 细长带状电极和电荷放大器由于扫描仪的脉冲点而接收电荷运动。 光电导结构优选地具有可由扫描仪感测的参考条，以从标准化的光学起始扫描和扫描的平板开始提供测量。 称为线偏移的这种测量是定位误差的量度，其将导致脉冲点的扫描图案相对于细长条状电极从其预期位置的位移。 该系统提供偏斜补偿以确定哪个电极和哪些相邻电极对应于特定扫描点，使得由此接收的电荷运动可以被适当地组合以形成由每个扫描点表示的图像像素的正确的电荷值。 在优选实施例中，对偏斜测量电路进行的测量进行滤波，以便为每条线提供平滑的偏斜测量和每行的增量偏斜。

公开(公告)号：WO1993013620A1

公开(公告)日：1993-07-08

申请号：PCT/JP1988000273

申请日：1988-03-16

Applicant: UEDA, Takaharu ,  YAMAMOTO, Tetsu ,  OGURA, Manabu ,  YUMURA, Takashi

IPC: H04N01/10

CPC classification number: H04N1/1035 ,  H04N1/0473 ,  H04N1/1017 ,  H04N1/193 ,  H04N1/482 ,  H04N2201/02439 ,  H04N2201/0442 ,  H04N2201/0471 ,  H04N2201/04712 ,  H04N2201/04734 ,  H04N2201/04739 ,  H04N2201/04755 ,  H04N2201/04794

Abstract: PCT No. PCT/JP88/00273 Sec. 371 Date Mar. 15, 1989 Sec. 102(e) Date Mar. 15, 1989 PCT Filed Mar. 16, 1988.A two-dimensional image pick-up device using a one-dimensional image pick-up element which is useful as an image reader. Drive coil type linear motors for driving an element moving carriage in the subscanning direction of the one-dimensional image pick-up element are disposed on both sides of the element moving carriage, enabling the deivce to be economically small-sized as a whole.

公开(公告)号：WO1992003008A1

公开(公告)日：1992-02-20

申请号：PCT/NL1991000114

申请日：1991-07-02

Applicant: SPECTRUM SCIENCES B.V.

Inventor： SPECTRUM SCIENCES B.V. ,  PELED, Shimon ,  GREENBERG, Abraham ,  LIVNE, Haim

IPC: H04N01/04

CPC classification number: H04N1/047 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/03154 ,  H04N2201/0471 ,  H04N2201/04724 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04739 ,  H04N2201/04744 ,  H04N2201/0476 ,  H04N2201/04791 ,  H04N2201/04794

Abstract: Apparatus for optical imaging onto a moving surface including a movable surface for receiving an optical image, apparatus for measuring the movement of the surface and providing an surface movement reference signal, optical image producing apparatus operative to produce at least one scanning optical beam for scanning the surface and to provide timing reference signals, and a servo-controlled relay mirror located so as to reflect the at least one scanning beam onto the moving surface. The mirror is precisely positioned in response to the relationship between the substrate movement reference signals and the timing reference signals to ensure proper positioning of the optical image on the moving surface.

公开(公告)号：WO1990005963A1

公开(公告)日：1990-05-31

申请号：PCT/US1989005205

申请日：1989-11-14

Applicant: MSC TECHNOLOGIES, INC.

Inventor： MSC TECHNOLOGIES, INC. ,  ANGWIN, George, T.

IPC: G06K09/22

CPC classification number: H04N1/047 ,  H04N1/107 ,  H04N2201/02425 ,  H04N2201/02439 ,  H04N2201/03162 ,  H04N2201/0422 ,  H04N2201/0471 ,  H04N2201/04715 ,  H04N2201/04717 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04734 ,  H04N2201/04787 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04794

Abstract: A method for using a scanner to scan pixel data from an image on a page and map the scanned pixel data in a computer's memory is disclosed comprising the steps of (a) placing a scanner having an elongated detector array of detector elements and two optical mice located in relation to the ends of the array on a transparent grid pattern covering an image on a page to be scanned, (b) determining the orientation of the scanner with respect to the grid pattern using motion detection information provided by the two mice, (c) positioning the scanner at a starting point from which to start detecting the position of the mice and commencing scanning of the page by moving the scanner across the surface of the grid pattern, and (d) storing pixel data scanned by each detector element at a memory address of a computer in communication with the scanner which corresponds to a coordinate position on the grid pattern determined to be nearest the actual position of a particular detector element.

公开(公告)号：WO1987007015A1

公开(公告)日：1987-11-19

申请号：PCT/US1987001130

申请日：1987-05-13

Applicant: TRUVEL CORPORATION

Inventor： TRUVEL CORPORATION ,  GERLACH, Richard, K.

IPC: G01D09/42

CPC classification number: H04N1/0628 ,  G06K15/1295 ,  H04N1/036 ,  H04N1/047 ,  H04N1/0607 ,  H04N1/0678 ,  H04N1/32443 ,  H04N2201/02416 ,  H04N2201/02439 ,  H04N2201/03158 ,  H04N2201/0404 ,  H04N2201/0471 ,  H04N2201/04724 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04755 ,  H04N2201/04767 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04794 ,  H04N2201/329

Abstract: A photographic film printer that forms an image on film based upon received or stored digital information is provided. While maintained in a stationary position, the film is exposed in a sequence of raster scans by a rotating disk traversing the photographic film surface. At least one optical film is attached to the rotating disk in a manner that transmits optical energy directed towards the center of the disk to a peripheral location on the disk. Exposure of the film occurs by controlling the emission of optical energy by the fiber in accordance with the received or stored digital information as the peripheral edge of the disk rotates past the film surface.