# US 7,744,199 B2 · Ink-jetting apparatus and ink-jetting method

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- Number: US 7,744,199 B2
- Document ID: US7744199B2
- Status: Granted
- Kind: B2
- Application number: 11/902,322
- Filed: 2007-09-20
- Published: 2008-03-27
- Granted: 2010-06-29
- Earliest claimed: 2006-09-27
- Assignees: Samsung Electro-Mechanics Co., Ltd.
- Inventors: Young-Seuck Yoo; Jae-Woo Joung; Young-Jae Kim
- Web page: https://patentgrep.com/patent/US7744199B2

## CPC

- B41J 2/06: by electric or magnetic field
- 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

An ink-jetting apparatus and an ink-jetting method are disclosed. An ink-jetting apparatus for jetting an ink through a nozzle which includes a chamber containing the ink, an actuator providing a pressure to the chamber, and an electrostatic part forming an electric field around the nozzle, may provide high resolution and a wide range of grey scale by using a piezoelectric method with an electrostatic method in combination.

## Claims

### Claim 1

An ink-jetting method for jetting an ink contained in a chamber through a nozzle, the method comprising:
forming an electrified ink tip at the nozzle by a piezoelectric method, the forming the electrified ink tip including electrifying an ink contained in a chamber, and forming the ink tip by providing pressure to the chamber; and
separating at least a portion of the ink tip with an electrostatic force.

### Claim 2 (depends on 1)

The method of claim 1, wherein forming the ink tip is performed by a piezoelectric element.

### Claim 3 (depends on 1)

The method of claim 1, wherein the separating is performed by an electrode layer in which a through-hole corresponding to the nozzle is formed.

### Claim 4 (depends on 3)

The method of claim 3, wherein the electrode layer is formed in a plurality.

### Claim 5 (depends on 4)

The method of claim 4, wherein each of the electrode layers is connected to a separate power supply.

### Claim 6 (depends on 1)

The method of claim 1, wherein the separating is performed by an opposing electrode formed adjacent to the nozzle at a distance.