Air path control device and digital printer
By controlling the air path of the printhead with positive and negative pressure, the problems of needle breakage and print quality degradation during paperboard printing were solved, achieving efficient ink supply and stable printhead operation, thus improving production efficiency.
CN119388882BActive Publication Date: 2026-07-21SHENZHEN HANDWAY IND DIGITAL EQUIP CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN HANDWAY IND DIGITAL EQUIP CO LTD
- Filing Date
- 2024-12-09
- Publication Date
- 2026-07-21
AI Technical Summary
Technical Problem
Existing printheads are prone to needle breakage and print quality degradation during cardboard printing, especially after prolonged printing, requiring frequent downtime for maintenance.
Method used
By designing an air circuit control device, the working state of the printhead is precisely controlled using positive and negative pressure modules and switching valves, thereby achieving efficient ink supply and circulation and preventing printhead clogging.
Benefits of technology
It reduces material waste, improves production efficiency, reduces printhead maintenance frequency, and ensures stable print quality.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN119388882B_ABST
Abstract
The application relates to an air path control device and a digital printer, and the air path control device comprises a main ink cartridge, an auxiliary ink cartridge, a positive pressure module, a negative pressure module, an auxiliary ink cartridge on-off valve and a main ink cartridge positive-negative pressure switching valve. The first end of the auxiliary ink cartridge on-off valve is connected with the auxiliary ink cartridge, the second end of the auxiliary ink cartridge on-off valve is connected with the negative pressure module, and the auxiliary ink cartridge on-off valve is used for opening or closing the passage between the auxiliary ink cartridge and the negative pressure module. The first end of the main ink cartridge positive-negative pressure switching valve is connected with the main ink cartridge, the second end of the main ink cartridge positive-negative pressure switching valve is connected with the positive pressure module, the third end of the main ink cartridge positive-negative pressure switching valve is connected with the negative pressure module, and the main ink cartridge positive-negative pressure switching valve is used for opening or closing the passage between the main ink cartridge and the positive pressure module and / or the negative pressure module. Through the control of the positive pressure and the negative pressure, the application realizes accurate conversion of different working states of a nozzle, so that material loss is reduced, and production efficiency is improved.
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