Inkjet printhead with bubble-venting cavities offset from fluid outlets
US-2017313098-A1 · Nov 2, 2017 · US
Inkjet printhead with air cavities defined by ribs protruding into fluid channel
US9950528B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9950528-B2 |
| Application number | US-201715583234-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 1, 2017 |
| Priority date | May 2, 2016 |
| Publication date | Apr 24, 2018 |
| Grant date | Apr 24, 2018 |
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- Title
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Abstract
Official abstract text for this publication.
An inkjet printhead including: an elongate fluid manifold comprising: an inlet boss, an outlet boss, a longitudinal channel extending between the inlet and outlet bosses, a plurality of air cavities positioned above the longitudinal channel in a roof cavity of the fluid manifold, and plurality of fluid outlets defined in a floor of the longitudinal channel; and a plurality of printhead chips attached to the base of the fluid manifold, each printhead chip receiving printing fluid from one or more fluid outlets. The air cavities are defined by ribs extending from a roof of the fluid manifold towards the longitudinal channel and each rib has a lip protruding beyond a lower surface of the inlet and outlet bosses.
First claim
Opening claim text (preview).
The invention claimed is: 1. An inkjet printhead comprising: an elongate fluid manifold comprising: an inlet boss, an outlet boss, a longitudinal channel extending between the inlet and outlet bosses, a plurality of air cavities positioned above the longitudinal channel in a roof cavity of the fluid manifold, and plurality of fluid outlets defined in a floor of the longitudinal channel; and a plurality of printhead chips attached to the base of the fluid manifold, each printhead chip receiving printing fluid from one or more fluid outlets, wherein: the air cavities are defined by ribs extending from a roof of the fluid manifold towards the longitudinal channel; and each rib has a lip protruding beyond a lower surface of the inlet and outlet bosses. 2. The inkjet printhead of claim 1 , wherein the fluid manifold comprises an upper part and a lower part, the upper and lower parts cooperating to define the channel. 3. The inkjet printhead of claim 2 , wherein the upper part comprises the inlet boss, the outlet boss and the air cavities. 4. The inkjet printhead of claim 2 , wherein the lower part comprises the base. 5. The inkjet printhead of claim 2 , wherein the upper and lower parts each have walls cooperating to define sidewalls of the channel.
Assignees
Inventors
Classifications
line printer type · CPC title
- B41J2/1433Primary
Structure of nozzle plates · CPC title
Outer structure · CPC title
- B41J2/14Primary
Structure thereof {only for on-demand ink jet heads} · CPC title
Structure of ink jet print heads with thermal bend detached actuators · CPC title
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Frequently asked questions
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- What does patent US9950528B2 cover?
- An inkjet printhead including: an elongate fluid manifold comprising: an inlet boss, an outlet boss, a longitudinal channel extending between the inlet and outlet bosses, a plurality of air cavities positioned above the longitudinal channel in a roof cavity of the fluid manifold, and plurality of fluid outlets defined in a floor of the longitudinal channel; and a plurality of printhead chips at…
- Who is the assignee on this patent?
- Memjet Technology Ltd, Memjet Technology Ltd
- What technology area does this patent fall under?
- Primary CPC classification B41J2/1433. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 24 2018 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).