# US 8,770,720 B2 · Liquid ejecting apparatus

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- Number: US 8,770,720 B2
- Document ID: US8770720B2
- Status: Granted
- Kind: B2
- Application number: 13/851,388
- Filed: 2013-03-27
- Published: 2013-10-31
- Granted: 2014-07-08
- Earliest claimed: 2012-04-27
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Ryosuke Tsuchihashi; Kinya Ozawa
- Web page: https://patentgrep.com/patent/US8770720B2

## CPC

- B41J 2/14: Structure thereof {only for on-demand ink jet heads}
- B41J 2/04573: {Timing; Delays}
- B41J 2/04581: {controlling heads based on piezoelectric elements}
- B41J 2/04588: {using a specific waveform}
- B41J 2/14233: {of film type, deformed by bending and disposed on a diaphragm}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

A liquid ejecting apparatus has a head component that ejects a liquid through nozzle openings to attach the liquid to an object. The liquid contains a particulate material having a particle size of 200 nm to 1 μm, both inclusive, and the head component discharges the liquid in droplets weighing 1 ng to 7 ng, both inclusive, in a way that the droplets reach the object at a velocity of 5 m/s to 9 m/s, both inclusive.

## Claims

### Claim 1

A liquid ejecting apparatus comprising
a head component that ejects a liquid through nozzle openings to attach the liquid to an object, wherein:
the liquid contains a particulate material having a particle size of 200 nm to 1 μm, both inclusive;
the head component discharges the liquid in droplets weighing 1 ng to 7 ng, both inclusive, in a way that the droplets reach the object at a velocity of 5 m/s to 9 m/s, both inclusive; and
the particle size of the particulate material is a 50%-volume sphere equivalent particle diameter, as measured by light scattering.

### Claim 2 (depends on 1)

The liquid ejecting apparatus according to claim 1, wherein:
the particulate material is particulate titanium oxide.