四色印花的原稿选择

Selection of master copy for quadrochromatic printing

四色印花是一种网点阶调印花 ,它依赖于对原稿成像质量的选择 ,图像原稿的选择决定四色印花的产品质量。通过扫描等方式输入电脑 ,再经过分色、加网和制版等环节 ,所以原稿质量的好坏直接影响印花成品的质量。本文阐述原稿选择中连续调优于半色调 ,照片透射稿优于照片反射稿 ,正片优于负片 ,数字原稿优于模拟原稿等原则 ;而色彩、层次。

Quadrochromatic printing is a dot tone printing, the printing quality mainly depends on master copy of the image, which is input to the computer by scanning, then treated with color seperation, adding dot and stenciling. It is found that master copy of the continuous tone, transmission photo, positive, digital are superior to half tone effect, reflection photo, negative, and analogue respectively. Hue, gradation and sharpness are the criteria for copy quality.