Valve unit, liquid ejecting head, liquid ejecting apparatus, method of producing valve unit, method of producing liquid ejecting head, and method of producing liquid ejecting apparatus

Patent metadata

Field	Value
Publication number	US-10525719-B2
Application number	US-201815922398-A
Country	US
Kind code	B2
Filing date	Mar 15, 2018
Priority date	Mar 24, 2017
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

A valve unit includes a flow path member having an opening surface that has a flow path opening of a liquid flow path, a valve having a sealing surface configured to seal the flow path opening, and a sealing member disposed on one of a peripheral portion of the flow path opening in the opening surface and a portion of the sealing surface facing the peripheral portion. The sealing surface is configured to be moved forward and backward relative to the opening surface to open and close the flow path opening. The sealing member is configured to be in contact with the peripheral portion of the flow path opening and the sealing surface when the valve is closed. The sealing member includes a fluorinated polyether.

First claim

What is claimed is:

1. A valve unit comprising:
a flow path member having an opening surface that has a flow path opening of a liquid flow path;
a valve having a sealing surface configured to seal the flow path opening, the sealing surface being configured to be moved forward and backward relative to the opening surface to open and close the flow path opening; and
a sealing member disposed on one of a peripheral portion of the flow path opening in the opening surface and a portion of the sealing surface facing the peripheral portion, the sealing member being configured to be in contact with the peripheral portion of the flow path opening and the sealing surface when the valve is closed, wherein
the sealing member includes a fluorinated elastomer with a fluorinated polyether backbone.

2. The valve unit according to claim 1 , further comprising a primer layer between a base member of the portion where the sealing member is disposed and the sealing member.

3. The valve unit according to claim 2 , wherein the base member contains a hydroxyl group, and
the primer layer has silicon-hydroxyl group bonds and carbon-carbon double bonds.

4. The valve unit according to claim 3 , wherein the carbon-carbon double bonds in the primer layer are present in a larger amount at a position adjacent to the sealing member including silicon-hydrogen bonds and carbon-carbon double bonds.

5. The valve unit according to claim 2 , wherein the base member has a recess at a sealing member arrangement portion where the sealing member is disposed, and a portion of the sealing member is positioned in the recess.

6. The valve unit according to claim 2 , further comprising a protrusion on a sealing member arrangement portion of the base member where the sealing member is disposed, the protrusion having a base extending upward from the sealing member arrangement portion and an overhanging portion having a larger width than the base, and
the sealing member covers the protrusion.

7. A liquid ejecting head comprising the valve unit according to claim 1 , wherein the liquid ejecting head is configured to eject liquid supplied from the valve unit.

8. A liquid ejecting head comprising the valve unit according to claim 2 , wherein the liquid ejecting head is configured to eject liquid supplied from the valve unit.

9. A liquid ejecting head comprising the valve unit according to claim 3 , wherein the liquid ejecting head is configured to eject liquid supplied from the valve unit.

10. A liquid ejecting head comprising the valve unit according to claim 4 , wherein the liquid ejecting head is configured to eject liquid supplied from the valve unit.

11. A liquid ejecting head comprising the valve unit according to claim 5 , wherein the liquid ejecting head is configured to eject liquid supplied from the valve unit.

12. A liquid ejecting head comprising the valve unit according to claim 6 , wherein the liquid ejecting head is configured to eject liquid supplied from the valve unit.

13. A liquid ejecting apparatus comprising:
the valve unit according to claim 1 , and
a liquid ejecting head configured to eject liquid supplied from the valve unit.

14. A liquid ejecting apparatus comprising:
the valve unit according to claim 2 , and
a liquid ejecting head configured to eject liquid supplied from the valve unit.

Assignees

• Seiko Epson Corp

Inventors

• Tadachi Kei
• Nagatoya Satoshi
• Tsuchiya Hiroyuki

Classifications

• B41J2/17509

  Whilst mounted in the printer · CPC title

• B41J2/17596 Primary

  Ink pumps, ink valves · CPC title

• B41J2/14 Primary

  Structure thereof {only for on-demand ink jet heads} · CPC title

• B41J2202/22

  Manufacturing print heads · CPC title

• B41J2202/05

  Heads having a valve · CPC title