Method of inkjet printing with air-dampening of ink pressure fluctuations
US-2020171838-A1 · Jun 4, 2020 · US
Method of inkjet printing with air-dampening of ink pressure fluctuations
US10870287B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10870287-B2 |
| Application number | US-202016784157-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 6, 2020 |
| Priority date | May 2, 2016 |
| Publication date | Dec 22, 2020 |
| Grant date | Dec 22, 2020 |
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- Title
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Abstract
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A method of inkjet printing includes the steps of: (i) delivering ink to a printhead manifold having a longitudinal ink channel, one or printhead chips mounted to a floor of the printhead manifold and in fluid communication with the longitudinal ink channel, and a plurality of sealed air cavities positioned over the longitudinal ink channel for dampening pressure fluctuations in the ink; (ii) printing from the printhead chips; and (iii) replenishing the air cavities with air.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of inkjet printing comprising the steps of: delivering ink to a printhead manifold having a longitudinal ink channel, one or printhead chips mounted to a floor of the printhead manifold and in fluid communication with the longitudinal ink channel, and a plurality of sealed air cavities positioned over the longitudinal ink channel for dampening pressure fluctuations in the ink, printing from the printhead chips; and replenishing the air cavities with air, wherein the air cavities are replenished from an air supply having a valved connection to the air cavities. 2. The method of claim 1 , wherein the ink is degassed ink. 3. The method of claim 1 , wherein the air cavities are replenished after or before printing. 4. The method of claim 1 , wherein each air cavity has a mouth meeting with the longitudinal ink channel. 5. The method of claim 1 , wherein the air cavities are defined by ribs extending from a roof of the fluid manifold towards the longitudinal ink channel. 6. The method of claim 5 , wherein the printhead manifold has an inlet boss and an outlet boss at opposite ends of the longitudinal ink channel. 7. The method of claim 6 , wherein each rib has a lip protruding beyond a lower surface of the inlet and outlet bosses. 8. A method of inkjet printing comprising the steps of: delivering ink to a printhead manifold having a longitudinal ink channel, one or printhead chips mounted to a floor of the printhead manifold and in fluid communication with the longitudinal ink channel, and a plurality of sealed air cavities positioned over the longitudinal ink channel for dampening pressure fluctuations in the ink, printing from the printhead chips; and replenishing the air cavities with air, wherein the air cavities are replenished after or before printing. 9. The method of claim 8 , wherein the ink is degassed ink. 10. The method of claim 8 , wherein each air cavity has a mouth meeting with the longitudinal ink channel.
Assignees
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Classifications
Modules · CPC title
Structure of nozzle plates · CPC title
electronically · CPC title
Structure of the manifold · CPC title
Line printing · CPC title
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- What does patent US10870287B2 cover?
- A method of inkjet printing includes the steps of: (i) delivering ink to a printhead manifold having a longitudinal ink channel, one or printhead chips mounted to a floor of the printhead manifold and in fluid communication with the longitudinal ink channel, and a plurality of sealed air cavities positioned over the longitudinal ink channel for dampening pressure fluctuations in the ink; (ii) p…
- Who is the assignee on this patent?
- Memjet Technology Ltd
- What technology area does this patent fall under?
- Primary CPC classification B41J2/14. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 22 2020 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).