Damper Unit Plate Member Prevents Film Peeling
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Solution Overview
Problem
In printing apparatuses, the damper film can peel off when subjected to positive pressure, which is a recurring issue in existing designs.
Innovation Solution
A damper unit is designed with a container and a flexible damper film adhered to its containing wall, along with a plate member facing the damper film. This configuration creates a containing space for ink supply through negative pressure, and when the damper film receives positive pressure, the plate member contacts it to prevent further displacement and peeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a damper film is used to control pressure in the ejection head, then ink supply control is improved, but the damper film may peel off when receiving positive pressure
Solution Approach 1:
A plate member is positioned to face the damper film before positive pressure occurs. When positive pressure applies to the damper film, the plate member contacts the film to prevent excessive displacement and peeling, thereby counteracting the harmful effect before it can fully develop
Solution Approach 2:
The plate member acts as an intermediary element between the damper film and the external environment. It transfers and distributes the positive pressure force, preventing direct peeling of the film while maintaining the pressure control function
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces the likelihood of the damper film peeling off, ensuring reliable operation and maintaining the film's adherence during printing processes.
Implementation Method 1
the containing wall and the damper film define a containing space for containing a liquid to be supplied to a nozzle hole in a nozzle surface by a negative pressure during printing
Implementation Method 2
when the damper film receives a positive pressure, the plate member provided to face the damper film comes into contact with the damper film
Data Source
AI summary
A damper unit includes: a container including: a containing wall; and a damper film having flexibility and adhered to the containing wall, wherein the containing wall and the damper film define a containing space for containing a liquid to be supplied to a nozzle hole in a nozzle surface by a negative pressure during printing; and a plate member facing the damper film outside the container.