# US 9,751,311 B2 · Fluid ejection device

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- Number: US 9,751,311 B2
- Document ID: US9751311B2
- Status: Granted
- Kind: B2
- Application number: 14/777,040
- Filed: 2014-03-11
- Published: 2016-02-04
- Granted: 2017-09-05
- Earliest claimed: 2013-03-15
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Ryuji Moriyama; Masayuki Kumazaki
- Web page: https://patentgrep.com/patent/US9751311B2

## CPC

- B41J 2/165: Prevention {or detection} of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J 2/1433: {Structure of nozzle plates}
- B41J 2/162: {Manufacturing of the nozzle plates}
- B41J 2/1714: {Conditioning of the outside of ink supply systems, e.g. inkjet collector cleaning, ink mist removal (B41J2/08, B41J2/16517, B41J2/18 take precedence)}
- B41J 2/185: Ink-collectors; Ink-catchers
- B41J 29/02: Framework
- B41J 2/16502: {Printhead constructions to prevent nozzle clogging or facilitate nozzle cleaning}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

A fluid ejection device has a fluid ejection head that ejects fluid droplets onto printing paper; a carriage that carries the fluid ejection head; and a static elimination member or charged member affixed to either or both the fluid ejection head and carriage. The static elimination member is configured to contactlessly eliminate the electric charge of an object, and the charged member has a polarized charge.

## Claims

### Claim 1

A fluid ejection device comprising:
a fluid ejection head that ejects fluid droplets onto a recording medium;
a carriage that carries the fluid ejection head; and
a static elimination member affixed to the fluid ejection head; and
the static elimination member configured to contactlessly eliminate the electrical charge of an object;
wherein the static elimination member includes a plurality of short conductive fibers,
wherein the fluid ejection head has a nozzle plate in which a nozzle is formed, and
wherein the state elimination member is affixed to the nozzle plate.

### Claim 2 (depends on 1)

The fluid ejection device described in claim 1, further comprising:
a carriage moving mechanism that moves the carriage bidirectionally in a scanning direction intersecting the conveyance direction of the recording medium;
the static elimination member being affixed to either or both the side of the carriage or the fluid ejection head facing the direction of travel when the carriage moves toward one end of the path of movement, and the side of the carriage or the fluid ejection head facing the direction of travel when the carriage moves toward the other end of the path of movement.

### Claim 3 (depends on 1)

The fluid ejection device described in claim 1, wherein:
the fluid forming the fluid droplets includes ink;
the fluid ejection head includes an inkjet head; and
the fluid ejection device includes an inkjet recording device and a printing device.

### Claim 4 (depends on 1)

The fluid ejection device described in claim 1, wherein the static elimination member is a non-woven cloth of fibrous material including the plurality of short conductive fibers.

### Claim 5 (depends on 4)

The fluid ejection device described in claim 4, wherein the non-woven cloth is impregnated with a conductive polymer.

### Claim 6 (depends on 1)

The fluid ejection device described in claim 1, wherein the plurality of short conductive fibers are woven into a cloth.

### Claim 7 (depends on 1)

The fluid ejection device described in claim 1, wherein the plurality of short conductive fibers form a knitted cloth.

### Claim 8 (depends on 1)

The fluid ejection device described in claim 1, wherein the static elimination member includes an adhesive layer.