Liquid jetting apparatus

A liquid jetting apparatus comprising:

• a liquid jetting head having individual channels, a first common channel connected to the individual channels, and a second common channel connected to the individual channels, the individual channels having nozzles respectively;
• a pump configured to circulate liquid inside the liquid jetting head by generating a flow of the liquid from the first common channel toward the second common channel via the individual channels;
• and
• a controller,
• wherein the controller is configured to:
• reduce a unit circulation amount of the liquid in stages as standby time becomes longer, the unit circulation amount being a circulation amount of the liquid per unit time by the pump, the standby time being a length of time during which a standby state is continued, the standby state being a state in which the liquid jetting head is ready without jetting the liquid from the nozzles;
• and
• in a case of shifting the liquid jetting head from the standby state to a jetting operation of jetting the liquid from the nozzles, determine a type of recovery operations for resolving thickening of the liquid inside the nozzles in accordance with the standby time at the time of shifting from the standby state to the jetting operation.