# US 7,465,030 B2 · Nozzle arrangement with a magnetic field generator

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,465,030 B2
- Document ID: US7465030B2
- Status: Granted
- Kind: B2
- Application number: 12/050,938
- Filed: 2008-03-18
- Published: 2008-07-03
- Granted: 2008-12-16
- Earliest claimed: 1997-07-15
- Assignees: Silverbrook Research Pty Ltd
- Inventors: Kia Silverbrook
- Web page: https://patentgrep.com/patent/US7465030B2

## CPC

- B41J 2/1648: {Production of print heads with thermal bend detached actuators}
- B41J 2/14427: {Structure of ink jet print heads with thermal bend detached actuators}
- B41J 2/1623: {bonding and adhesion}
- B41J 2/1626: {etching}
- B41J 2/1628: {dry etching}
- B41J 2/1629: {wet etching}
- B41J 2/1631: {photolithography}
- B41J 2/1632: {machining}
- B41J 2/1635: {dividing the wafer into individual chips}
- B41J 2/1637: {molding}
- B41J 2/1639: {sacrificial molding}
- B41J 2/1642: {thin film formation by CVD [chemical vapor deposition]}
- B41J 2/1643: {thin film formation by plating}
- B41J 2/1645: {thin film formation by spincoating}
- B41J 2/1646: {thin film formation by sputtering}
- B41J 2/17513: {Inner structure}
- B41J 2/17596: {Ink pumps, ink valves}
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- G06K 1/121: {by printing code marks (applying code marks to labels B65C9/46; marking or coding completed packages B65B61/26)}
- G06K 7/14: using light without selection of wavelength, e.g. sensing reflected white light {(G06K7/10831 - G06K7/1097 take precedence)}
- G06K 7/1417: {2D bar codes}
- G06K 19/06037: {multi-dimensional coding}
- G11C 11/56: using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
- H04N 1/2154: {the still video camera incorporating a hardcopy reproducing device, e.g. a printer}
- H04N 5/2628: {Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation}
- B41J 2/16585: {for paper-width or non-reciprocating print heads}
- B41J 2002/041: {Electromagnetic transducer}
- B41J 2202/21: Line printing
- H04N 2101/00: Still video cameras
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G11C: STATIC STORES (semiconductor memory devices H10B)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

The invention provides for a nozzle arrangement for a printhead. The arrangement includes a wafer substrate defining a nozzle chamber, and a passivation layer formed on the substrate to define a roof wall and ink ejection port of the chamber. The arrangement also includes a paddle arranged in the chamber configured to operatively eject ink from the chamber via the ejection port, as well as a magnetic field generator fast with the wafer substrate, the generator configured to actuate the paddle to eject the ink.

## Claims

### Claim 1

A nozzle arrangement for a printhead, the arrangement comprising:
a wafer substrate defining a nozzle chamber;
a passivation layer formed on the substrate to define a roof wall and ink ejection port of the chamber;
a magnetic paddle arranged in the chamber configured to operatively eject ink from the chamber via the ejection port; and
a magnetic field generator fast with the wafer substrate, the generator configured to actuate the paddle to eject the ink.

### Claim 2 (depends on 1)

The nozzle arrangement of claim 1, wherein the nozzle chamber is formed during an etching process carried out on the wafer substrate.

### Claim 3 (depends on 1)

The nozzle arrangement of claim 1, wherein the chamber includes an inlet arranged in fluid communication with an ink reservoir.

### Claim 4 (depends on 3)

The nozzle arrangement of claim 3, wherein the magnetic field generator includes an electrical coil positioned about the inlet of the nozzle chamber.

### Claim 5 (depends on 4)

The nozzle arrangement of claim 4, wherein the wafer substrate includes a drive circuitry layer with drive circuitry for providing electrical signals to the electrical coil.

### Claim 6 (depends on 5)

The nozzle arrangement of claim 5, wherein the electrical coil is connected to the drive circuitry of the drive circuitry layer so that, when required, the coil can be activated to generate a magnetic field.

### Claim 7 (depends on 3)

The nozzle arrangement of claim 3, wherein the paddle is dimensioned so that, when the paddle is received in the inlet, the paddle serves to close the inlet.

### Claim 8 (depends on 7)

The nozzle arrangement of claim 7, wherein the paddle is movable between an open position in which the paddle is spaced from the inlet to permit the ingress of ink into the nozzle chamber and a closed position in which the paddle is received in the inlet to close the inlet.