公开(公告)号：US09978004B2

公开(公告)日：2018-05-22

申请号：US15540362

申请日：2015-05-19

申请人： HITACHI, LTD.

发明人： Takao Watanabe ,  Shigeki Mori ,  Ryo Imai ,  Koichi Watanabe

IPC分类号： B23K26/53 ,  G06K15/12 ,  G06K1/12 ,  B41M3/00 ,  G06K15/02

CPC分类号： G06K15/1276 ,  B23K26/0006 ,  B23K26/032 ,  B23K26/0624 ,  B23K26/0853 ,  B23K26/53 ,  B23K26/55 ,  B23K26/702 ,  B23K2103/54 ,  B41M3/00 ,  B41M5/26 ,  G06K1/121 ,  G06K15/023 ,  G06K15/1271 ,  G06K19/06037 ,  G06K19/06178

摘要： It is an object of the present invention to improve visibility for observation with naked eyes or for camera shooting without spoiling the appearance during marking inside a transparent medium using a laser. By irradiating an inside of a transparent medium with a laser, the present invention forms a micro-denatured region in each of a first layer and a second layer inside the medium. The micro-denatured regions in the respective layers are arranged out of alignment with each other on a two-dimensional plane (refer to FIG. 1).

公开(公告)号：US20040041901A1

公开(公告)日：2004-03-04

申请号：US10232438

申请日：2002-08-29

申请人： Xerox Corporation

发明人： Mohammad H. Rahnavard ,  Mehrdad Zomorrodi

IPC分类号： B41J002/47

CPC分类号： G06K15/1271 ,  G06K2215/0085

摘要： A method for banding suppression due to vibration in an image forming and/or image receiving apparatus with laser driver utilizes governing equations which relate the on/off time and intensity to velocity and frequency of vibration are disclosed. Using derived formulas, an amplitude and frequency modulation (AM/FM) combination is used to suppress the banding due to vibration. The equation which governs the on/off time (FM) is t1nulle sin(2nullft1)/vnnullt0. This transcendental equation can be solved for the required on-time t1 in terms of the nominal on-time t0, e (vibration amplitude ), v0 (nominal velocity) and f (vibration frequency). The equation which governs the intensity is H3(t)nullv(t)/v0. H3(t) controls the level of irradiance. This method is further extended to multi-temporal vibration frequency and may correct banding due to irradiance modulation.

摘要翻译： 公开了一种使用激光驱动器的图像形成和/或图像接收装置中由于振动引起的带状抑制的方法，利用将开/关时间和强度与振动的速度和频率相关联的控制方程。 使用派生公式，使用幅度和频率调制（AM / FM）组合来抑制由于振动引起的条带。 控制开/关时间（FM）的方程是t1 + e sin（2pift1）/ vn = t0。 根据标称导通时间t0，e（振幅），v0（标称速度）和f（振动频率），可以求出所需的导通时间t1的超验方程。 控制强度的方程式为H3（t）= v（t）/ v0。 H3（t）控制辐照度。 该方法进一步扩展到多时间振动频率，并且可以由于辐照调制来校正条带。

公开(公告)号：US20040041900A1

公开(公告)日：2004-03-04

申请号：US10232476

申请日：2002-08-29

申请人： Xerox Corporation

发明人： Mohammad H. Rahnavard ,  Mehrdad Zomorrodi

IPC分类号： B41J002/47 ,  B41J002/40 ,  B41J002/405

CPC分类号： G06K15/1271 ,  G06K2215/0085

摘要： A method for banding suppression due to vibration in an imager utilizing a light emitting diode (LED) array is disclosed. By characterizing the LED array and knowing the amplitude and frequency of the signal due to vibration which causes the banding, the LEDs' driving currents are modulated in reverse direction corresponding to the banding signal to suppress the banding.

摘要翻译： 公开了一种利用发光二极管（LED）阵列的成像器中由于振动引起的带状抑制的方法。 通过表征LED阵列并知道由于导致条带的振动引起的信号的幅度和频率，LED的驱动电流在对应于条带信号的相反方向上被调制以抑制条带。

公开(公告)号：US5251057A

公开(公告)日：1993-10-05

申请号：US421226

申请日：1989-10-13

申请人： Jean-Michel Guerin ,  Melvin E. Swanberg

发明人： Jean-Michel Guerin ,  Melvin E. Swanberg

IPC分类号： G02B26/10 ,  B41J2/44 ,  G02B5/30 ,  G02B27/28 ,  G02F1/11 ,  G03G15/04 ,  G06K15/12 ,  H04N1/113 ,  H04N1/191 ,  G02F1/01 ,  G02F1/29

CPC分类号： G06K15/1271 ,  H04N1/1911 ,  H04N1/1135

摘要： In a raster output scanner, a system for using one original beam and one facet of a rotating polygon to generate two consecutive scan lines. The original beam is first separated into two beams in a beam splitter. The resultant beams are polarized ninety degrees apart, and directed to the modulator. The beams are a sufficient distance apart so that the A/O modulator can modulate each beam with a minimum of crosstalk. The output beams are then brought together to within one scan line separation by a beam recombiner, which is a reversed beam splitter. The beams can be brought together to this close proximity without optical interference because the beams are plarized ninety degrees apart.

公开(公告)号：US4053898A

公开(公告)日：1977-10-11

申请号：US610082

申请日：1975-09-03

申请人： Kazuhiro Hirayama ,  Yasushi Sato ,  Taisuke Tokiwa ,  Kazuo Kawakubo ,  Fujio Iwatate ,  Hisashi Nakatsui

发明人： Kazuhiro Hirayama ,  Yasushi Sato ,  Taisuke Tokiwa ,  Kazuo Kawakubo ,  Fujio Iwatate ,  Hisashi Nakatsui

IPC分类号： G06K15/12

CPC分类号： G06K15/1271 ,  G06K15/1204 ,  G06K15/1223 ,  G06K15/1228 ,  G06K15/1257

摘要： A laser recording method including: deflecting a plurality of laser beams, respectively and dividing the respective beams into multiple beams which are at substantially regular intervals; linearly arranging respective beams of the multiple beams in a line at substantially regular intervals and in a direction perpendicular to a direction of scanning action of the beams on the recording medium; modulating each beam and focusing the beam on the recording medium; and scanning the recording medium with the divided beams.

摘要翻译： 一种激光记录方法，包括：分别偏转多个激光束并将各个光束分成多个基本上规则的间隔的光束; 以大致规则的间隔并且在与记录介质上的光束的扫描动作的方向垂直的方向上以一行的方式直线地布置多个光束的各个光束; 调制每个光束并将光束聚焦在记录介质上; 并用划分的光束扫描记录介质。

公开(公告)号：US06774925B2

公开(公告)日：2004-08-10

申请号：US10232438

申请日：2002-08-29

申请人： Mohammad H. Rahnavard ,  Mehrdad Zomorrodi

发明人： Mohammad H. Rahnavard ,  Mehrdad Zomorrodi

IPC分类号： B41J247

CPC分类号： G06K15/1271 ,  G06K2215/0085

摘要： A method for banding suppression due to vibration in an image forming and/or image receiving apparatus with laser driver utilizes governing equations which relate the on/off time and intensity to velocity and frequency of vibration are disclosed. Using derived formulas, an amplitude and frequency modulation (AM/FM) combination is used to suppress the banding due to vibration. The equation which governs the on/off time (FM) is t1+e sin(2&pgr;ft1)/vn=t0. This transcendental equation can be solved for the required on-time t1 in terms of the nominal on-time t0, e (vibration amplitude), v0 (nominal velocity) and f (vibration frequency). The equation which governs the intensity is H3(t)=v(t)/v0. H3(t) controls the level of irradiance. This method is further extended to multi-temporal vibration frequency and may correct banding due to irradiance modulation.

摘要翻译： 公开了一种使用激光驱动器的图像形成和/或图像接收装置中由于振动引起的带状抑制的方法，利用将开/关时间和强度与振动的速度和频率相关联的控制方程。 使用派生公式，使用幅度和频率调制（AM / FM）组合来抑制由于振动引起的条带。 控制开/关时间（FM）的方程是t1 + e sin（2pift1）/ vn = t0。 根据标称导通时间t0，e（振幅），v0（标称速度）和f（振动频率），可以求出所需的导通时间t1的超验方程。 控制强度的方程式为H3（t）= v（t）/ v0。 H3（t）控制辐照度。 该方法进一步扩展到多时间振动频率，并且可以由于辐照调制来校正条带。

公开(公告)号：US5258856A

公开(公告)日：1993-11-02

申请号：US775131

申请日：1991-10-11

申请人： Hidetoshi Shinada

发明人： Hidetoshi Shinada

IPC分类号： G06K15/12 ,  H04N1/40

CPC分类号： G06K15/1271 ,  G06K2215/111

摘要： A method and apparatus for scanning and exposing in which m laser beams which are arranged in an array so that part of a adjacent laser beams overlap on the photosensitive surface, are main-scanned in a direction intersecting the line along which the laser beams are arranged, while being sub-scanned in the direction in which they are arrayed, to carry out a two-dimensional exposure. The power of at least one of the mth laser beam for the Nth main scanning and the first laser beam for the (N+1)th main scanning is changed, or the distance between the mth laser beam for the Nth main scanning and the first laser beam for the (N+1)th main scanning is changed, to correct density unevenness at the overlapping portion of the mth and the first laser beams.

公开(公告)号：US5081597A

公开(公告)日：1992-01-14

申请号：US454349

申请日：1989-12-21

申请人： Robert P. Kowalski

发明人： Robert P. Kowalski

IPC分类号： B41J2/44 ,  B41J2/46 ,  G06F17/17 ,  G06K15/12 ,  H04N1/036 ,  H04N1/401

CPC分类号： H04N1/4015 ,  G06K15/027 ,  G06K15/12 ,  G06K15/1247 ,  G06K15/1261 ,  G06K15/1271

摘要： In accordance with the present invention, correction factors for dynamically equalizing the optical channels of a multichannel optical imaging system, individually or on a group-by-group basis, are recursively computed while the imaging system is idle (i.e., not printing) through the use of an iterative process comprising the steps of: measuring the output intensities of the respective sets of channels, sequentially comparing the measured channel intensities against a system calibrated reference intensity level, and adjusting the correction factor for each set of channels that is found to be operating at an intensity level deviating from the reference intensity level in the direction that is required to reduce the magnitude of the deviation (unless the correction factor value already is at the limit of its dynamic range in that direction). Preferably, the correction factor adjustments are made by incrementing and decrementing their least significant values, thereby maximizing the sensitivity of each iteration of the process to the affect of the immediately preceding iteration on the amount of crosstalk occurring between neighboring sets of channels. For example, the correction factors suitably are multi-bit binary values which are adjusted by incrementing and decrementing their least significant bits (LSB's). The reference intensity level typically is calibrated by measuring the uncorrected output intensities of the respective sets of channels and by then selecting the intensity of the set of channels which is determined to be operating at the lowest valid intensity level for use as the reference intensity. Advantageously, this calibration procedure is repeated on a predetermined schedule for recalibrating the reference level from time-to-time to correct for gradual drift in the optical characteristics of the imaging system.

摘要翻译： 根据本发明，在成像系统空闲（即，不打印）时，递归计算多通道光学成像系统的光通道的单独或逐个组合的校正因子 使用迭代过程，其包括以下步骤：测量各组信道的输出强度，顺序地将所测量的信道强度与系统校准参考亮度水平进行比较，以及调整每组信道的修正因子 在偏离参考强度水平的强度水平上工作，以减小偏差幅度所需的方向（除非校正因子值已经在该方向上的动态范围的极限）。 优选地，通过递增和递减它们的最小有效值来进行校正因子调整，从而将过程的每次迭代的灵敏度最大化为紧邻前一迭代对相邻信道组之间发生的串扰量的影响。 例如，校正因子适当地是通过递增和递减其最低有效位（LSB）来调整的多位二进制值。 参考强度水平通常通过测量各组通道的未校正的输出强度并且然后选择被确定为以最低有效强度水平操作以用作参考强度的通道组的强度来校准。 有利地，该校准程序在预定的时间表上重复，以便不时地重新校准参考电平，以校正成像系统的光学特性中的逐渐漂移。

公开(公告)号：US4244005A

公开(公告)日：1981-01-06

申请号：US971211

申请日：1978-12-20

申请人： Heinrich Jurgensen

发明人： Heinrich Jurgensen

IPC分类号： H04N3/10 ,  G02B26/10 ,  G02F1/01 ,  G02F1/11 ,  G06K15/12 ,  H04N1/036 ,  H04N1/23 ,  H04N1/40 ,  H04N5/66 ,  H04N3/00

CPC分类号： H04N1/036 ,  G06K15/1271 ,  H04N1/40037

摘要： A method of avoiding unwanted line structures in the electronic reproduction of images by means of a monochromatic light source in whose beam path an acousto-optic modulator (AOM) cell is arranged. One line consists of a multiple line made up of a plurality of sub-lines. The acousto-optic modulator (AOM) cell is driven by a mixture of ultrasonic waves of discrete frequencies, by which means the beam is split up into a plurality of sub-beams each associated with a discrete frequency which together determines the line width. The individual frequencies are so calculated that the sub-beams overlap and so that the amplitudes of the frequencies produce a uniform intensity distribution in a line.

摘要翻译： 一种通过其光束路径中的声光调制器（AOM）单元被布置的单色光源避免图像电子再现中的不需要的线结构的方法。 一条线由多条子线组成的多条线组成。 声光调制器（AOM）单元由离散频率的超声波的混合驱动，这意味着该波束被分成多个子波束，每个子波束与离散频率相关联，该离散频率一起确定线宽。 单个频率被如此计算，使得子光束重叠，并且使得频率的幅度在一行中产生均匀的强度分布。

公开(公告)号：US4019186A

公开(公告)日：1977-04-19

申请号：US668125

申请日：1976-03-18

申请人： Anton Dressen ,  Klaus Menzel

发明人： Anton Dressen ,  Klaus Menzel

IPC分类号： B41J2/44 ,  G02B6/04 ,  G02B27/00 ,  G06K15/12 ,  G01D9/42 ,  G01D15/10 ,  G02B5/14

CPC分类号： G06K15/1271

摘要： A motion pick-up in a non-mechanical printer to produce electric timing signals at instances of time at which given points of a path of motion are crossed includes a light transmissive rod arranged along the path of motion which is parallel to the line of print on a data carrier. The light transmissive rod has marks thereon, or associated therewith at the level of the given points and a laser beam which is split into sub-beams by an acousto-optical beam deflector provides a predetermined sub-beam which is deflected by a polygonal reflector and scanned thereby along the rod. The sub-beam is influenced by the marks in such a manner so as to cause light scattering and reflection through the rod so as to strike a photo-element and produce output signals which constitute electric timing signals. The rod may be glass or a synthetic material. The marks may be constituted by scratches on the rod.

摘要翻译： 非机械式打印机中的移动拾取器在运动路径的给定点的时间的时刻产生电定时信号包括沿着平行于打印线的运动路径布置的透光杆 在数据载体上。 透光杆在其上具有标记，或者在给定点的水平处与其相关联，并且通过声光束偏转器被分割成子光束的激光束提供由多边形反射器偏转的预定子光束， 从而沿着杆扫描。 子光束以这样的方式受到标记的影响，从而通过杆引起光散射和反射，从而撞击光电元件并产生构成电定时信号的输出信号。 棒可以是玻璃或合成材料。 标记可以由杆上的划痕构成。