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US 2019/0100012 A1Published application
Liquid Jetting Apparatus Including Purge Mechanism
AssigneeBrother Kogyo Kabushiki Kaisha
InventorShotaro Iida
Life of this patent
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Abstract
There is provided a liquid jetting apparatus including: a liquid jetting head; a cap; a switching mechanism configured to perform switching of a state of the cap between a capping state and an uncapping state; a timer; a purge mechanism; and a controller. The controller performs: calculating a value of a capping-time parameter; and measuring a capping time with the timer. In a case that a purge condition regarding the capping time and the value of the capping-time parameter is satisfied, the controller causes the purge mechanism to perform a purge, and then causes the liquid jetting head to perform a jetting operation.
Claims12
A liquid jetting apparatus comprising:
- a liquid jetting head having a nozzle;
- a cap;
- a switching mechanism configured to perform switching of a state of the cap between a capping state in which the cap covers the nozzle and an uncapping state in which the cover is apart from the liquid jetting head;
- a timer;
- a purge mechanism;
- and
- a controller configured to perform:
- controlling the liquid jetting head to perform a jetting operation for jetting liquid from the nozzle toward a medium;
- after controlling the liquid jetting head to perform the jetting operation, controlling the switching mechanism to perform switching of the state of the cap to the capping state;
- calculating a value of a capping-time parameter relating to an evaporation rate of a water content in the liquid inside the cap at a time of the switching of the state of the cap to the capping state performed last time;
- under a condition that a jetting instruction for instructing performance of the jetting operation is input, measuring a capping time with the timer,
- the capping time being one of:
- a time included in a time since the switching of the state of the cap to the capping state after the jetting operation performed last time and until the input of the jetting instruction, and during which the cap is in the capping state;
- and
- a time included in a time since the switching of the state of the cap to the capping state after the jetting operation performed last time and until switching of the state of the cap to the uncapping state by the input of the jetting instruction and during which the cap is in the capping state;
- and
- under a condition that a purge condition with respect to the capping time and the value of the capping-time parameter is satisfied, controlling the purge mechanism to perform a purge for discharging the liquid in the liquid jetting head from the nozzle to the cap, and then controlling the liquid jetting head to perform the jetting operation.
14 more elements
A liquid jetting apparatus comprising:
- a liquid jetting head having a nozzle;
- a cap;
- a switching mechanism configured to perform switching of a state of the cap between a capping state in which the cap covers the nozzle and an uncapping state in which the cover is apart from the liquid jetting head;
- a timer;
- a purge mechanism;
- and
- a controller configured to perform:
- controlling the liquid jetting head to perform a jetting operation for jetting liquid from the nozzle toward a medium;
- after controlling the liquid jetting head to perform the jetting operation, controlling the switching mechanism to perform switching of the state of the cap to the capping state;
- calculating a value of a capping-time parameter relating to an evaporation rate of a water content in the liquid inside the cap at a time of the switching of the state of the cap to the capping state performed last time;
- under a condition that a jetting instruction for instructing performance of the jetting operation is input, measuring a capping time with the timer,
- the capping time being one of:
- a time included in a time since the switching of the state of the cap to the capping state after the jetting operation performed last time and until the input of the jetting instruction, and during which the cap is in the capping state;
- and
- a time included in a time since the switching of the state of the cap to the capping state after the jetting operation performed last time and until switching of the state of the cap to the uncapping state by the input of the jetting instruction and during which the cap is in the capping state;
- before performing the jetting operation, determining a discharge amount, in which the liquid in the liquid jetting head is to be discharged, based on the capping time and the value of the capping-time parameter;
- and
- before the jetting operation, controlling the liquid jetting head to discharge the liquid from the liquid jetting head in the determined discharge amount.
15 more elements
Dependencies are inferred from the claim text.