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    • 5. 发明授权
    • Automatic exposure apparatus for printing plates and method for exposing printing plates
    • 印版自动曝光装置和曝光印版的方法
    • US06624840B1
    • 2003-09-23
    • US09664064
    • 2000-09-18
    • Yoshinori KawamuraYoshihiro KoyanagiMitsuyoshi NishimuraTakashi Kato
    • Yoshinori KawamuraYoshihiro KoyanagiMitsuyoshi NishimuraTakashi Kato
    • B41J2435
    • B41C1/1083
    • An automatic exposure apparatus for printing plates and a method for exposing printing plates, which can prevent a defective image such as an unfocused image from being formed when an image is recorded onto the printing plate is provided. Suction holes are formed at a surface plate 110 of an automatic exposure apparatus 100 for printing plates, and a vacuum pump 306 communicates with the suction holes. A solenoid valve 308 is provided at a communicating path 304 between the suction holes and the vacuum pump 306, and a chamber 310 is provided at the communicating path 304 between the solenoid valve 308 and the vacuum pump 306. The solenoid valve 308 is closed and the vacuum pump 306 is operated in a state in which a photopolymer plate 102 is disposed on a top surface of the surface plate 110, and the solenoid valve 308 is opened completely in an instant in a state in which a pressure of a decompressed interior of the chamber 310 is a predetermined value or lower, such that the decompressed interior can suck air all at once from the suction holes with a strong suction force. Accordingly, a curled photopolymer plate 102 can be brought in complete contact with the top surface of the surface plate 110, and thus, a defective image such as an unfocused image is prevented when an image is recorded.
    • 提供一种用于印版的自动曝光装置和用于曝光印版的方法,其可以防止在将图像记录到印刷版上时形成未图像的缺陷图像。 在用于印版的自动曝光装置100的表面板110处形成吸孔,并且真空泵306与抽吸孔连通。 电磁阀308设置在吸入孔和真空泵306之间的连通路径304处,并且室310设置在电磁阀308和真空泵306之间的连通路径304处。电磁阀308关闭,并且 真空泵306在其中光敏聚合物板102设置在表面板110的顶表面上的状态下操作,并且电磁阀308在压缩内部的压缩的压力的瞬间完全打开 室310是预定值或更低的,使得减压的内部可以用强吸力从吸入孔一次吸入空气。 因此,卷曲的感光聚合物板102可以与表面板110的顶表面完全接触,因此,当记录图像时,防止诸如未聚焦图像的缺陷图像。