Printing system having four-bar linkage mechanisms for positioning its print modules

摘要

A printing system comprises a sub-frame (5), a print module (8) with printheads (27), a first support unit (30) that is connected to the sub-frame (5), in particular movable in a displacement direction (z) relative to the sub-frame, a substrate holder (2) for supporting a substrate (3), and a positioning mechanism for moving the print module relative to the first support unit to and from a print position. A set of positioning parts (34-36) and positioning references (14-16) is provided that form part of or are connected to the print module (8) respectively the sub-frame (5). The positioning parts (34-36) are engageable with corresponding ones of the positioning references (14-16) for aligning the print module (8) relative to the sub-frame (5) when moved into its print position. The positioning mechanism comprises one or more four-bar linkage mechanisms (32) acting between the print module (8) and the first support unit (30).