申请人:Fuji Photo Film Co., Ltd.
公开号:US05658701A1
公开(公告)日:1997-08-19
A method for preparation of a waterless lithographic printing plate by an electrophotographic process comprising providing a peelable transfer layer (T) containing a thermoplastic resin (A) on a surface of an electrophotographic light-sensitive element, forming a non-fixing toner image by an electrophotographic process using a liquid developer on the transfer layer, transferring the toner image together with the transfer layer (T) from the electrophotographic light-sensitive element onto a primary receptor, transferring the toner image together with the transfer layer (T) from the primary receptor onto a support for lithographic printing plate, providing on the transfer layer (T) bearing the toner image a non-tacky resin layer having adhesion to the transfer layer (T) larger than adhesion between the toner image and the non-tacky resin layer, and selectively removing the non-tacky resin layer provided on the toner image. The method is suitable for a scanning exposure system using a laser beam of a low power, and simply and rapidly provides a waterless lithographic printing plate excellent in image qualities and printing durability.
一种制备无水平版的电子照相过程的方法,包括在电子感光元件的表面提供一个可剥离转移层(T),该转移层包含热塑性树脂(A),使用液态开发剂通过电子照相过程形成一个非固定的调色剂图像,在转移层上将调色剂图像连同转移层(T)从电子感光元件转移到主要受体上,将调色剂图像连同转移层(T)从主要受体转移到用于平版印刷的支撑上,在承载调色剂图像的转移层(T)上提供一个非粘性树脂层,该层与转移层(T)之间的粘附力大于调色剂图像与非粘性树脂层之间的粘附力,并选择性地去除提供在调色剂图像上的非粘性树脂层。该方法适用于使用低功率激光束的扫描曝光系统,并且简单快速地提供了一种在图像质量和印刷耐久性方面均优秀的无水平版印刷板。