Gas control systems for purging a printhead manufacturing apparatus
US12409607B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 1, 2022 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | Aug 13, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C64/165
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A gas control system including a positive pressure vessel, a negative pressure vessel, a first pressure control valve configured to control a flow of gas to and from a first manifold of a printhead assembly, and a second pressure control valve configured to control a flow of gas to and from a second manifold of the printhead assembly. During a normal positive pressure mode, gas flows from the positive pressure vessel to the first manifold and the second manifold through a respective one of the first pressure control valve and the second pressure control valve. During a positive pressure purge mode, gas from the positive pressure vessel bypasses the first pressure control valve and the second pressure control valve to flow to the first manifold and the second manifold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.