GCM 111 Lecture Notes - Lecture 4: Halftone, Computer To Plate

• School: Ryerson University
• Department: Graphic Communications
• Course: GCM 111
• Professor: Jason Lisi

Document Summary

There are no shades (tints) of colour in linework. A line work can only have a value of 100% Since line work is a solid colour, it is not affected by screen ruling. There are no halftone dots in line work because it is solid. Linework items do not have any dots or dot structure. Linework items are output at the device resolution (e. g. 1200 or 2400 dpi for a platesetter) Digitally created linework itesm tend to be vector based and therefore are resolution independent. Originals scanned as linework are usually 1-bit tiff files at 1200 or 2400 ppi. It is important to understand the relationship between printing dots, screen angles, dot shapes and screening types when it comes to reproducing halftones and tints in print.