Liquid Ejecting Device Region Division for Hole Position Shifts
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Solution Overview
Problem
Existing liquid ejecting devices face issues with position shifts of holes formed in non-print regions, leading to conspicuous shifts and increased load on control units due to the need to locate and remove image data based on hole positions.
Innovation Solution
A liquid ejecting device with a control unit that divides the medium into a first region for image formation and a second region with through holes, where the control unit causes liquid ejection only in the first region, preventing image formation in the second region, thereby reducing the need for position alignment and data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the processing head is shifted from the set position, then printing can continue without stopping, but the hole position shifts from the image position making the shift conspicuous
Solution Approach 1:
The medium is divided into a first region where images are formed and a second region where only through holes are formed. This segmentation allows the printing process to continue without interruption while ensuring that hole position shifts do not affect the image quality, as the image formation region is separated from the hole formation region.
Solution Approach 2:
Different regions of the medium are assigned different functions: the first region is optimized for image formation with precise liquid ejection, while the second region is optimized for hole formation. This local differentiation ensures that hole position variations in the second region do not impact image quality in the first region.
2Manufacturing precision
If the control unit locates and removes image data based on hole positions, then hole position shifts can be corrected, but the control unit workload increases
Solution Approach 1:
By dividing the medium into distinct first and second regions, the control unit no longer needs to locate and remove image data based on hole positions. The segmentation approach simplifies control by pre-defining regions, eliminating the complex real-time adjustment process.
Solution Approach 2:
The medium is pre-divided into regions with predetermined functions before the printing process starts. This preliminary arrangement eliminates the need for real-time control adjustments, reducing the control unit workload while maintaining hole position accuracy.
3Loss of information
If images are formed in the entire medium region, then complete image data is processed, but the control unit must process and remove image data in the second region increasing complexity
Solution Approach 1:
The medium is segmented into a first region for complete image data processing and a second region for hole formation only. This segmentation allows the control unit to process image data efficiently in the first region while avoiding the unnecessary processing and removal operations that would be required if images were formed across the entire medium.
Solution Approach 2:
Different regions have different processing requirements: the first region receives complete image data processing, while the second region receives only hole formation processing. This local differentiation reduces the overall control unit processing load by eliminating unnecessary image data removal operations in the second region.
Data Source
AI summary
A recording system includes an ejecting unit, a punch unit, and a control unit. The ejecting unit ejects ink onto a sheet transported by a transport unit to form an image. The punch unit forms two through holes aligned in a Y direction with respect to the sheet. The control unit controls ejection of the ink based on image data. When the two through holes are formed in the sheet, the control unit divides a region where an image can be formed into a first region and a second region that is aligned with the first region in a T direction and in which the two through holes are formed. The control unit causes the ejecting unit to eject the ink to form a part of the image in the first region, and causes the ejecting unit not to eject the ink in the second region.