The term 'Inker' is a five-letter solution for the crossword clue 'Part of a Printing Press'. An Inker is a person who operates a printing press and is responsible for inking the plates that are used to print images onto paper. The Inker ensures that the plates are properly inked and that the ink is evenly distributed across the plate. They also adjust the pressure of the rollers to ensure that the ink is applied correctly.