Glossary of print, R. Register, registration marks.

Print, paper and printing technology terms and definitions beginning with the letter R.

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When a printed sheet is 'in-register', it means that all the plates - Cyan, Maganeta, Yellow and Black, in the case of a four color process job - are lining up accurately on the printing press and producing a clearly defined color image.

If a job is out of register, there will be a blurring at the edges of images that are made up of more than one color.

Registration marks

Cross-haired lines that help visually ensure that a set of films or printing plates are in register, to produce a sharp registered result. Many modern printing presses have sensors which can automatically detect registration marks and ensure registration.