Liquid discharge apparatus and method

Patent metadata

Field	Value
Publication number	US-9908330-B2
Application number	US-201615384604-A
Country	US
Kind code	B2
Filing date	Dec 20, 2016
Priority date	Dec 28, 2015
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

A liquid discharge apparatus includes: a head unit that has nozzles that discharge a column-shaped liquid; a liquid droplet generating unit that applies cyclically changing energy to positions of the column-shaped liquids discharged from the nozzles, which are separated from the nozzles, and that generates liquid droplets; and a direction changing unit that changes a flying direction of at least some liquid droplets of the generated liquid droplets.

First claim

What is claimed is:

1. A liquid discharge apparatus comprising:
a head unit that has nozzles that discharge a column-shaped liquid, wherein the column-shaped liquid includes a solvent;
a liquid droplet generating unit that applies cyclically changing energy to positions of the column-shaped liquids discharged from the nozzles, which are separated from the nozzles, and that generates liquid droplets; and
a direction changing unit that changes a flying direction of at least some liquid droplets of the generated liquid droplets by gasifying a portion of the solvent included in the at least some of the liquid droplets.

2. The liquid discharge apparatus according to claim 1 ,
wherein the liquid droplet generating unit applies the energy to the column-shaped liquid through irradiation with a laser beam.

3. The liquid discharge apparatus according to claim 1 ,
wherein the direction changing unit changes the flying direction of at least some of the liquid droplets through irradiation with a laser beam.

4. The liquid discharge apparatus according to claim 1 ,
wherein the liquid droplet generating unit generates liquid droplets having a first size and liquid droplets having a second size that is larger than the first size.

5. The liquid discharge apparatus according to claim 4 , further comprising:
a collecting unit that collects the liquid droplets having the first size or the liquid droplets having the second size and that resupplies the collected liquid to the head unit.

6. The liquid discharge apparatus according to claim 5 ,
wherein the direction changing unit changes the flying direction of the liquid droplets having the first size, but does not change the flying direction of the liquid droplets having the second size, and
wherein the collecting unit collects the liquid droplets having the first size, of which the flying direction is changed, but does not collect the liquid droplets having the second size, of which the flying direction is not changed.

7. The liquid discharge apparatus according to claim 5 ,
wherein the direction changing unit changes the flying direction of the liquid droplets having the first size, but does not change the flying direction of the liquid droplets having the second size, and
wherein the collecting unit does not collect the liquid droplets having the first size, of which the flying direction is changed, but collects the liquid droplets having the second size, of which the flying direction is not changed.

8. The liquid discharge apparatus according to claim 1 , further comprising:
an energy applying unit that applies energy to the liquid droplets having landed on a predetermined target object.

9. The liquid discharge apparatus according to claim 8 ,
wherein the liquid is a fluid composition that contains powder and a solvent, and
wherein the energy applying unit applies energy to the liquid droplets having landed, thereby sintering the powder in the liquid droplets or melting the powder in the liquid droplets and then solidifying the powder.

10. A method for discharging a liquid from a liquid discharge apparatus, the method comprising:
discharging column-shaped liquids from nozzles provided in a head unit of the liquid discharge apparatus, wherein the column-shaped liquids include a solvent;
applying cyclically changing energy to positions of the column-shaped liquids discharged from the nozzles, which are separated from the nozzles, and generating liquid droplets; and
gasifying a portion of the solvent, wherein a change in a pressure of the resulting gas changes a flying direction of at least some liquid droplets of the generated liquid droplets.

Assignees

• Seiko Epson Corp

Inventors

• Sugai Keigo

Classifications

• B41J2/03

  by pressure · CPC title

• B41J2/105 Primary

  for binary-valued deflection · CPC title

• B41J2/1433

  Structure of nozzle plates · CPC title

• B41J2002/033

  Continuous stream with droplets of different sizes · CPC title

• B41J2/175

  Ink supply systems {; Circuit parts therefor} · CPC title