GCM 111 Lecture Notes - Lecture 4: Flexography, Dot Gain, Newsprint

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

Document Summary

To learn what a halftone is and the impact of halftones on the printing process. To understand the difference between a halftone, tint and linework. To explore the concept of line screens, screen angles, and the implications of each on. To learn the difference, pros and cons with regards to am and fm screening. The world we live in is analog, and this includes colour. Our eyes see is continuous tone colour. A photograph shot by a film camera is continuous tone. A painting or sketch is continuous tone. When images are printed, the continuous tone colour is defined by a finite number of printing dots. Printed images are known as halftone images. Halftones are images made up of varying sized dots equally spaced apart. It is the varying dot size that gives the illusion of an area being lighter or darker. Tints have same-sized dots equally spaced apart, and are used to create variations on a colour.