Laser liquid crystal marker and method for judging deterioration of
liquid crystal
    3.
    发明授权
    Laser liquid crystal marker and method for judging deterioration of liquid crystal 失效
    激光液晶标记及判断液晶劣化的方法

    公开(公告)号:US5896163A

    公开(公告)日:1999-04-20

    申请号:US549744

    申请日:1995-11-07

    IPC分类号: B23K26/06 B23K26/42 B41J2/47

    CPC分类号: B23K26/066 B23K26/702

    摘要: A laser liquid crystal marker and a method of judging deterioration of the liquid crystal make it possible to maintain high printing accuracy, ascertain the proper time for replacement of liquid crystal and, further, maintain high printing accuracy even when high speed printing is continuously performed. The marker has a temperature sensor (4), light emitting means (5), light receiving means (6), and a controller (7). The controller (7) calculates a light transmittance (Qi) from the irradiation quantity of light (R1) of the light emitting means (5) and the transmitted quantity of light (R2) received by the light receiving means (6), and adjusts the applied voltage (Vi) of the liquid crystal (2) so that the light transmittance (Qi) becomes equal to an optimum light transmittance (Qo), stored in advance. Further, when the light transmittance (Qi) does not become equal to the optimum light transmittance (Qo), even by adjusting the voltage (Vi) applied to the liquid crystal, it is determined that the liquid crystal (2) has deteriorated.

    摘要翻译: PCT No.PCT / JP94 / 00703 Sec。 371日期:1995年11月7日 102(e)日期1995年11月7日PCT 1994年4月27日PCT PCT。 第WO94 / 26457号公报 日期1994年11月24日激光液晶标记和判断液晶劣化的方法使得可以保持高的印刷精度,确定适当的液晶更换时间,并且即使在高速下也能保持较高的印刷精度 连续执行打印。 标记具有温度传感器(4),发光装置(5),光接收装置(6)和控制器(7)。 控制器(7)根据发光装置(5)的光(R1)的照射量和由光接收装置(6)接收的透光量(R2)计算光透射率(Qi),并调整 液晶(2)的施加电压(Vi),使得透光率(Qi)等于预先存储的最佳透光率(Qo)。 此外,通过调整施加于液晶的电压(Vi),透光率(Qi)也不会变得与最佳透光率(Qo)相等时,判定为液晶(2)劣化。

    Yag laser mask marker
    4.
    发明授权
    Yag laser mask marker 失效
    YAG激光掩模标记

    公开(公告)号:US5309273A

    公开(公告)日:1994-05-03

    申请号:US926780

    申请日:1992-08-06

    摘要: A YAG laser mask marker includes a YAG laser oscillator (1), a first deflector (3X, 3Y) for deflecting a laser beam from the YAG laser oscillator in X and Y directions, a liquid crystal mask (6) for displaying a predetermined pattern to be raster scanned by the laser beam from the first deflector, a second deflector (7X, 7Y) for deflecting in X and Y directions the raster scanned light which has passed through the liquid crystal mask, a work (10) on which the raster scanned light from the second deflector is illuminated to print the pattern on an surface thereof, and a controller (11). The controller stores an entire pattern as dot data, divides the stored entire pattern data into a plurality of block-shaped divided pattern data items, and performs printing on the work by lowering an intensity of laser beam by the Q switch, by selecting one divided pattern data item from the plurality of divided pattern data items together with the address data thereof, by displaying the divided pattern data item on the liquid crystal mask as a divided pattern portion, by moving the first deflector to a raster starting position, by moving the second deflector to a printing area on the work on the basis of the address data, and by pulse oscillating the YAG laser oscillator by the Q switch and thereby raster scanning the divided pattern portion displayed on the liquid crystal mask by the first deflector.

    摘要翻译: YAG激光掩模标记包括YAG激光振荡器(1),用于在X和Y方向上偏转来自YAG激光振荡器的激光束的第一偏转器(3X,3Y),用于显示预定图案的液晶掩模 通过来自第一偏转器的激光束进行光栅扫描;第二偏转器(7X,7Y),用于在X和Y方向上偏转已经通过液晶掩模的光栅扫描光;工件(10),光栅 来自第二偏转器的扫描光被照亮以在其表面上印刷图案,以及控制器(11)。 控制器将整个图案存储为点数据,将存储的整个图案数据划分成多个块状分割图案数据项,并且通过选择一个被划分的Q分割来对激光束的强度进行降低来进行作业的打印 通过将第一偏转器移动到光栅开始位置,通过将第一偏转器移动到光栅开始位置,通过将分割图案数据项显示在液晶掩模上作为分割图案部分,通过移动第一偏转器到光栅开始位置,从多个分割图案数据项中的图案数据项及其地址数据 第二偏转器基于地址数据到工作上的打印区域,并且通过Q开关脉冲振荡YAG激光振荡器,从而通过第一偏转器对显示在液晶掩模上的分割图案部分进行光栅扫描。