Liquid jetting apparatus and maintenance method of the liquid jetting apparatus

A liquid jetting apparatus comprising:

• a first liquid jetting head having a nozzle which jets a first liquid supplied from a first liquid supply source storing the first liquid;
• a second liquid jetting head having a nozzle which jets a second liquid supplied from a second liquid supply source storing the second liquid;
• a liquid shortage detecting section detecting shortage of the first liquid in the first liquid supply source;
• a state detecting section which detects a state of the first liquid jetting head since a time at which the shortage of the first liquid has been detected by the liquid shortage detecting section up to a time at which the shortage of the first liquid is solved;
• a recovery mechanism which performs a recovery operation of the first liquid jetting head and the second liquid jetting head;
• and
• a controller which controls the first liquid jetting head, the second liquid jetting head, and the recovery mechanism,
• wherein the controller controls the second liquid jetting head to jet the second liquid irrespective of a detection result of the shortage of the first liquid by the liquid shortage detecting section;
• the controller controls the first liquid jetting head to restrict the jetting of the first liquid by the first liquid jetting head and controls the recovery mechanism to restrict the recovery operation with respect to the first liquid jetting head since the time at which the shortage of the first liquid has been detected by the liquid shortage detecting section up to the time at which the shortage of the first liquid is solved;
• and
• the controller controls, after the shortage of the first liquid is solved, the recovery mechanism based on the state of the first liquid jetting head, detected by the state detecting section, to perform the recovery operation.