Negative VS Positive CTP Plate
Positive CTP plates and negative CTP plates are two different types of printing plates used in the computer-to-print process. The main difference between them is the way the image is presented and processed. The following are the differences between them: 1. Positive CTP plate: - A positive CTP plate is a type of printing plate used to output images in the forward direction. During the plate making process, a laser light source is directed onto the plate, making the laser-irradiated areas hydrophilic and the non-irradiated areas hydrophobic. - During the printing process, ink does not adhere to the laser-irradiated areas, but to the non-irradiated areas, resulting in the formation of an image. - Positive CTP plates are suitable for most graphic printing, such as books, magazines, leaflets, etc. 2. Negative CTP plate: - Negative CTP plate is a kind of printing plate used for negative output image. In the process of plate making, the plate is directly irradia...