Channel member, liquid ejecting head, recording device, and method for manufacturing channel member

Patent metadata

Field	Value
Publication number	US-9682559-B2
Application number	US-201615158403-A
Country	US
Kind code	B2
Filing date	May 18, 2016
Priority date	Mar 26, 2015
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

[Object] An object of the present invention is to provide a channel member for a liquid ejecting head with small variations in ejection characteristics, a liquid ejecting head including the channel member, and a recording device.
[Solution] A channel member 4 for a liquid ejecting head according to the present invention includes a plurality of plates 4 a to 4 k that include a hole or a groove and that are stacked together with an adhesive layer 18 interposed therebetween. The hole or the groove constitutes a channel. The plate 4 e includes a receiving groove 17 for an adhesive, and an edge of the receiving groove 17 includes a first projection 17 a that projects from a principal surface of the plate that includes the receiving groove 17.

First claim

The invention claimed is:

1. A channel member with a channel comprising:
a plurality of plates; and
an adhesive layer that is interposed between each pair of adjacent plates of the plurality of plates,
wherein each plate of the plurality of plates includes a principal surface and has at least one of a hole and a first groove that constitutes the channel and is disposed in the principal surface,
wherein at least one of the plurality of plates has a second groove that is disposed from the at least one of the hole and the first groove by an interval,
wherein an edge of the second groove includes a first projection that projects toward a corresponding adjacent plate from the principal surface of the at least one of the plurality of plates having the second groove and the edge of the second groove, on which the projection is formed, is locally deformed, and
wherein the second groove does not extend through the at least one of the plates that includes the second groove.

2. The channel member according to claim 1 , wherein the first projection is in contact with another one of the plates that is stacked on the principal surface.

3. The channel member according to claim 1 , wherein a height of the first projection is 0.5 μm or more and 3 μm or less.

4. The channel member according to claim 1 , wherein a height of the first projection is greater than an average thickness of the adhesive layer.

5. The channel member according to claim 1 , wherein, in a cross section including the first projection, an edge of the at least one of the hole and the first groove that is disposed in the principal surface and that constitutes the channel does not include a second projection that projects from the principal surface or includes the second projection whose height from the principal surface is smaller than a height of the first projection from the principal surface.

6. The channel member according to claim 5 , wherein, in the cross section including the first projection, the edge of the at least one of the hole and the first groove that is disposed in the principal surface at a location adjacent to the first projection and that constitutes the channel does not include the second projection or includes the second projection whose height from the principal surface is smaller than the height of the first projection from the principal surface.

7. The channel member according to claim 1 , wherein an average thickness of the adhesive layer is 0.1 f.tm or more and 2.5 f.tm or less.

8. The channel member according to claim 1 , wherein the second groove has an overhanging shape in which an opening portion is narrower than an inner portion.

9. The channel member according to claim 1 , wherein the second groove has a semicircular cross section.

10. The channel member according to claim 1 ,
wherein the second groove does not constitute the channel.

11. The channel member according to claim 1 , wherein the second groove of the at least one plate surrounds a corresponding hole or corresponding first groove of the at least one plate.

12. A liquid ejecting head comprising:
a channel member with a channel comprising a plurality of plates and an adhesive layer that is interposed between each pair of adjacent plates of the plurality of plates; and
a plurality of compressing portions,
wherein the channel member includes a plurality of ejection holes that are connected to the channel, and the plurality of compressing portions cause a liquid to be ejected from each hole of the plurality of ejection holes by compressing the liquid in the channel,
each plate of the plurality of plates includes a principal surface and has at least one of a hole and a first groove that constitutes the channel and is disposed in the principal surface,
at least one of the plurality of plates has a second groove that is disposed from the hole or the first groove by an interval, and
an edge of the second groove includes a first projection that projects toward a corresponding adjacent plate from the principal surface of the at least one of the plurality of plates having the second groove and the edge of the second groove, on which the projection is formed, is locally deformed.

13. A recording device comprising:
the liquid ejecting head according to claim 12 ;
a conveying unit that conveys a recording medium to the liquid ejecting head; and
a control unit that controls the liquid ejecting head.

14. The liquid ejecting head according to claim 12 ,
wherein the channel member comprises a plurality of compressing chambers connected with the plurality of the ejection holes,
wherein the plurality of compressing chambers include sixteen compressing chamber rows.

15. The liquid ejecting head according to claim 14 ,
wherein a length of each compressing chamber of the plurality of compressing chambers in a first direction constituting the sixteen compressing chamber rows is
smaller than a length of each compressing chamber of the plurality of compressing chambers in a second direction perpendicular to the first direction.

16. A liquid ejecting head comprising:
a channel member comprising:
a first plate with a first channel hole;
a second plate with a second channel hole that is at least partially aligned with the first channel hole; and
an adhesive layer that is interposed between the first plate and the second plate and that adheres the first plate and the second plate; and

a compressing portion that causes an ink liquid to be ejected through the first channel hole and the second channel hole by compressing the ink liquid,
wherein the first plate comprises a receiving groove that is provided adjacent to the adhesive layer, and a first projection at an edge of the receiving groove that is projected toward the second plate, and
the edge of the receiving groove, on which the first projection is formed, is locally deformed.

17. A recording device comprising:
the liquid ejecting head according to claim 16 ;
a conveying unit that conveys a recording medium to the liquid ejecting head; and
a control unit that controls the liquid ejecting head.

Assignees

• Kyocera Corp

Inventors

• Ikeuchi Wataru
• Ueki Chitoshi
• Hirashima Akinori

Classifications

• B41J2/1626

  etching · CPC title

• B41J2/161

  of film type, deformed by bending and disposed on a diaphragm · CPC title

• B41J2202/11

  characterised by specific geometrical characteristics · CPC title

• B41J2/14233 Primary

  of film type, deformed by bending and disposed on a diaphragm · CPC title

• B41J2002/14362

  Assembling elements of heads · CPC title