Droplet jetting apparatus and maintenance method of droplet jetting head
View Patent ↗A droplet jetting apparatus includes: a droplet jetting head that is supplied with a jetting liquid and jets out droplets of the jetting liquid from nozzles formed in a nozzle surface; a spray device that sprays maintenance liquid on the nozzle surface; and a maintenance liquid temperature control unit that controls a temperature of the maintenance liquid so that the temperature of the maintenance liquid comes closer to or becomes higher than or equal to a temperature of the droplet jetting head.
1. A droplet jetting apparatus comprising:
a droplet jetting head that is supplied with a jetting liquid and jets out droplets of the jetting liquid from nozzles formed in a nozzle surface;
a spray device that sprays maintenance liquid on the nozzle surface; and
a maintenance liquid temperature control unit that controls a temperature of the maintenance liquid so that the temperature of the maintenance liquid comes closer to or becomes higher than or equal to a temperature of the droplet jetting head.
2. The droplet jetting apparatus according to claim 1 , further comprising:
a head temperature control unit that controls a temperature of the droplet jetting head so that the temperature of the droplet jetting head comes closer to a prescribed temperature.
3. The droplet jetting apparatus according to claim 1 , further comprising:
a jetting liquid temperature control unit that controls the temperature of the jetting liquid supplied to the droplet jetting head so that the temperature of the jetting liquid comes closer to a prescribed temperature.
4. The droplet jetting apparatus according to claim 1 , wherein:
the maintenance liquid temperature control unit controls the temperature of the maintenance liquid during a maintenance operation for the droplet jetting head.
5. A droplet jetting apparatus comprising:
a droplet jetting head that is supplied with a jetting liquid and jets out droplets of the jetting liquid from nozzles formed in a nozzle surface;
a spray device that sprays maintenance liquid on the nozzle surface; and
a maintenance liquid temperature control unit that controls a temperature of the maintenance liquid so that it becomes higher than or equal to a temperature of the jetting liquid supplied to the droplet jetting head.
6. A droplet jetting apparatus comprising:
a droplet jetting head that is supplied with a jetting liquid and jets out droplets of the jetting liquid from nozzles formed in a nozzle surface;
a spray device that sprays maintenance liquid on the nozzle surface; and
a maintenance liquid temperature increasing unit that increases a temperature of the maintenance liquid that is about to be sprayed.
7. A maintenance method of a droplet jetting head, comprising:
controlling a temperature of a maintenance liquid so that the temperature of the maintenance liquid comes closer to or becomes higher than or equal to a temperature of the droplet jetting head; and
spraying the temperature-controlled maintenance liquid on a nozzle surface of the droplet jetting head, nozzles that jets out droplets of a jetting liquid being formed in the nozzle surface.