Printing apparatus

A printing apparatus comprising:

• a carriage on which a printhead configured to discharge a liquid is detachably mounted;
• a liquid supply portion coupled to a liquid inflow portion of the printhead and configured to supply a liquid to the printhead;
• an elastic member arranged on a coupling portion between the liquid inflow portion and the liquid supply portion and configured to seal coupling between the liquid inflow portion and the liquid supply portion;
• a first operating member rotatably attached to the carriage and configured to shift the liquid inflow portion and the liquid supply portion to a coupled state in which the liquid inflow portion and the liquid supply portion are coupled by being operated in a first direction and to shift the liquid inflow portion and the liquid supply portion to a decoupled state in which the liquid inflow portion and the liquid supply portion are separated from each other by being operated in a second direction;
• and
• a lock member formed by a member different from the first operating member and coupled to the first operating member and configured to switch to a lock state in which the lock member is engaged with an engaging portion of the carriage to restrict the first operating member from shifting from the coupled state to the decoupled state and to a disengaged state in which the lock member is separated from the engaging portion to permit the first operating member to shift from the coupled state to the decoupled state,
• wherein the carriage includes a base portion on which the printhead is mounted and a second operating member, rotatably supported by the carriage, configured to fix the printhead mounted on the base portion to the carriage, and the lock member is engaged with the carriage via the second operating member, and
• wherein the first operating member receives, in the lock state, a force that is received from the elastic member and rotates the first operating member in the second direction and a force that is received from the engaging portion and rotates the first operating member in the first direction.