James O'Brien is Leading Britain's Conversation.
4 August 2017, 11:31
In newspapers, what are the small coloured circles/squares at the bottom of the pages?
Mystery Hour Question
What is the purpose of the coloured squares at the bottom of newspaper pages?
Billy, Isle of Wight
Name: Simon, Littlehampton
Qualification: Prinitng expert
Answer: They are called registration marks and all colour printing is known as four colour printing. You have cyan, magenta, yellow and black and they are the colours that make up any printing.