Inkjet Head Management Layout for Cleaning Without Stage Interference
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Solution Overview
Problem
Existing inkjet printing apparatuses face challenges in achieving precise ink application and effective cleaning and inspection of the inkjet head, often resulting in interference with the movement of the stage and increased size of the apparatus.
Innovation Solution
The inkjet printing apparatus is designed with a head management part positioned between two column parts, allowing it to move independently in a direction intersecting the stage's movement, enabling precise ink ejection and separate cleaning/inspection processes without interfering with the stage's movement, while being accommodated within a compact structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the head management part is disposed close to the head part for effective cleaning and inspection, then the cleaning and inspection effectiveness is improved, but the stage movement is interfered with and the apparatus size increases
Solution Approach 1:
The head management part is positioned in the second direction (transverse direction) between the first and second column parts, while the stage moves in the first direction. This dimensional separation allows the head management part to be close to the head part for effective cleaning and inspection without interfering with the stage's movement in the first direction.
Solution Approach 2:
The apparatus is divided into distinct functional zones: the head part for ink ejection, the head management part for cleaning and inspection, and the stage for substrate movement. These segmented parts can operate independently in their respective zones, resolving the conflict between cleaning effectiveness and stage movement.
2Reliability
If the head management part is disposed close to the head part for effective cleaning and inspection, then the cleaning and inspection effectiveness is improved, but the apparatus size increases
Solution Approach 1:
The head management part is nested within the framework formed by the first and second column parts, specifically positioned in the space between them. This nesting approach allows the head management part to be close to the head part for effective cleaning and inspection while utilizing existing spatial structure to minimize overall apparatus size.
3Manufacturing precision
If the head part is fixed at a fixed position for precise ink ejection, then the alignment accuracy is improved, but the flexibility of the system is reduced
Solution Approach 1:
While the head part is fixed relative to the first and second column parts to maintain precise alignment during ink ejection, the entire head management assembly can move in the second direction to reposition the head part for cleaning and inspection operations. This dynamic repositioning capability maintains system flexibility while preserving alignment accuracy during printing.
Data Source
AI summary
An inkjet printing apparatus includes: a base; a stage disposed on the base and capable of moving a substrate in a first direction; a first column part disposed on the base; a second column part disposed on the base and spaced apart from the first column part in the first direction; a head part configured to eject ink on the substrate at a fixed position and is disposed on the stage; and a head management part disposed between the first column part and the second column part and capable of moving in a second direction intersecting the first direction.