Liquid transfer apparatus

A liquid transfer apparatus comprising:

• rollers configured to transfer supplied liquid to a blanket cylinder;
• a roller holding device configured to detachably hold the rollers and perform a rotating operation to move any one of the rollers to a predetermined position facing the blanket cylinder;
• a contact-separation unit configured to bring the roller held by the roller holding device and disposed at the predetermined position into and out of contact with the blanket cylinder;
• and
• a position fixation unit configured to fix a position of the roller held by the roller holding device and disposed at the predetermined position, wherein
• the position fixation unit includes:
• an alignment roller fixed to the roller holding device;
• a roller engagement member capable of engaging with the alignment roller;
• and
• an alignment cylinder configured to move the roller engagement member toward and away from the alignment roller,
• the alignment cylinder of the position fixation unit is fixed to a sub-frame pin-connected to a frame via a pin member;
• and
• a guide roller provided in the position fixation unit and configured to guide the roller engagement member when the alignment cylinder of the position fixation unit performs extending and contracting operations.