Printing Device Coating Scooping Control for Mask Replacement
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Solution Overview
Problem
Conventional printing devices with coating material scooping units struggle to appropriately control the scooping operation when masks are replaced, leading to inefficiencies and increased time required for mask replacement.
Innovation Solution
A printing device equipped with a controller that determines whether to perform a scooping operation based on factors like the type, amount, expiration date, state, and length of the coating material, and the length of the squeegee, allowing for precise control of the coating material scooping unit during mask changes, including the option to transfer the coating material to a placement portion for reuse or disposal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the coating material scooping unit always performs collecting operation when mask is replaced, then the coating material is collected for potential reuse, but unnecessary operations occur when the coating material cannot be reused, reducing productivity
Solution Approach 1:
The controller determines in advance whether the coating material can be reused by evaluating multiple parameters (type, amount, expiration date, state, length) before the mask replacement occurs. This preliminary assessment prevents unnecessary collecting operations and ensures the scooping unit only operates when beneficial, thereby maintaining reliability while improving productivity.
2Measurement precision
If the controller determines reusability based on multiple parameters (type, amount, expiration date, state, length), then the control accuracy is improved, but the device complexity increases
Solution Approach 1:
The controller integrates multiple detection functions into a single device, assessing coating material type, amount, expiration date, state, and length through unified control logic. This multi-functional approach achieves high measurement precision without proportionally increasing device complexity, as the controller performs multiple assessments using coordinated sensors and processing.
3Loss of substance
If the coating material is transferred to placement portion for reuse, then material waste is reduced, but the time required for transfer operation increases the total mask replacement time
Solution Approach 1:
The coating material transfer operation is automated through the controller coordinating the scooping unit and placement mechanism, eliminating manual intervention. The system self-manages the transfer process, reducing time loss by eliminating human operation delays while ensuring material is properly transferred for reuse when determined beneficial.
Data Source
AI summary
A printing device includes a coating material scooping unit configured to scoop a coating material on a mask, and a controller configured or programmed to determine whether or not the coating material scooping unit performs collecting operation to collect the coating material on the mask when the mask is replaced.