Liquid ejection head with plurality of channels for supplying liquid to support port
US-9248650-B2 · Feb 2, 2016 · US
Liquid ejection head and liquid ejection apparatus
US9718274B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9718274-B2 |
| Application number | US-201615151964-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 11, 2016 |
| Priority date | May 22, 2015 |
| Publication date | Aug 1, 2017 |
| Grant date | Aug 1, 2017 |
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- Title
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Abstract
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In a liquid ejection head and a liquid ejection apparatus capable of reducing the occurrence of ejection malfunction, in a connecting section where a first flow channel and a second flow channel connect, a projecting member is provided on the flow channel wall forming the second flow channel.
First claim
Opening claim text (preview).
What is claimed is: 1. A liquid ejection head including an ejection element board that ejects liquid, wherein a flow channel that guides liquid to the ejection element board includes a first flow channel, and a second flow channel connected on a downstream side of the first flow channel and having a cross-sectional area smaller than the cross-sectional area of the first flow channel, the liquid ejection head comprising: at least one projecting member projecting out into the flow channel from a flow channel wall forming the second flow channel, wherein the second flow channel includes a second upstream-side flow channel provided on an upstream side, and a second downstream-side flow channel provided on a downstream side. 2. The liquid ejection head according to claim 1 , wherein the flow channel is provided in plural. 3. The liquid ejection head according to claim 1 , wherein the projecting member is provided across the second flow channel. 4. The liquid ejection head according to claim 1 , wherein the projecting member is provided in plural in the second flow channel. 5. The liquid ejection head according to claim 1 , wherein the projecting member extends to a terminal end of the second flow channel in a direction of liquid flow. 6. The liquid ejection head according to claim 1 , wherein the projecting member is provided projecting from the second flow channel towards the first flow channel. 7. The liquid ejection head according to claim 1 , wherein the projecting member originates from a location farther downstream than a connecting section between the first flow channel and the second flow channel. 8. The liquid ejection head according to claim 1 , wherein the projecting member and the flow channel are provided in plural and the projecting members are of equal length in the direction of liquid flow in each flow channel. 9. The liquid ejection head according to claim 1 , wherein one end of the second flow channel is in communication with the first flow channel, and the other end is in communication with the ejection element board. 10. The liquid ejection head according to claim 1 , wherein the cross-sectional area of the second downstream-side flow channel is greater than the cross-sectional area of the second upstream-side flow channel. 11. The liquid ejection head according to claim 1 , wherein the projecting member is provided on a flow channel wall forming the second upstream-side flow channel. 12. A liquid ejection apparatus on which a liquid ejection head including an ejection element board that ejects liquid may be mounted, wherein in the liquid ejection head, a flow channel that guides liquid to the ejection element board includes a first flow channel, and a second flow channel connected on a downstream side of the first flow channel and having a cross-sectional area smaller than the cross-sectional area of the first flow channel, the liquid ejection head comprising: at least one projecting member projecting out into the flow channel from a flow channel wall forming the second flow channel, wherein the second flow channel includes a second upstream-side flow channel provided on an upstream side, and a second downstream-side flow channel provided on a downstream side.
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Classifications
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Frequently asked questions
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- What does patent US9718274B2 cover?
- In a liquid ejection head and a liquid ejection apparatus capable of reducing the occurrence of ejection malfunction, in a connecting section where a first flow channel and a second flow channel connect, a projecting member is provided on the flow channel wall forming the second flow channel.
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification B41J2/175. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 01 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).