Print Head Orientation Optimization for Garment Inkjet Printing
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Solution Overview
Problem
Existing printing systems for garments, such as T-shirts and handkerchiefs, face inefficiencies in determining the optimal orientation and placement of images to minimize print time, leading to longer printing times due to unnecessary movements of the print head.
Innovation Solution
A method that calculates the print time for both original and rotated image data, determines the shorter print time, and adjusts the image orientation and placement accordingly, allowing the print head to discharge ink efficiently based on the calculated optimal orientation and position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the original image data is printed without rotation, then the image orientation is maintained as designed, but the print time increases due to unnecessary print head movements
Solution Approach 1:
The system performs preliminary calculations of print time for both original and rotated image orientations before actual printing. By pre-determining which orientation yields shorter print time, the system avoids unnecessary print head movements and reduces overall print time while maintaining manageable processing complexity through automated comparison logic
2Productivity
If the image is rotated to optimize print time, then the print head movement is minimized, but the image placement orientation changes
Solution Approach 1:
The system provides feedback to the user by displaying the determined optimal position and direction of the print medium. This allows users to verify the rotated orientation before printing, ensuring that productivity gains from optimized print head movement do not compromise operational ease or image placement accuracy
3Loss of time
If multiple image orientations are calculated and compared, then the optimal print time is achieved, but the processing complexity increases
Solution Approach 1:
The system applies local quality optimization by focusing calculations only on the two most relevant orientations (original and rotated 90 degrees) rather than evaluating all possible rotations. This targeted approach achieves print time optimization while keeping the calculation and comparison process manageable in complexity
Data Source
AI summary
A liquid discharge method includes: calculating a first print time to print original image data on a print medium; generating rotated image data by rotating the original image data by a predetermined angle; calculating a second print time to print the rotated image data on the print medium; comparing the first print time and the second print time to determine whether the first print time is larger than the second print time; generating print image data according to the rotated image data in response to a determination in which the first print time is larger than the second print time; generating print image data according to the original image data in response to a determination in which the first print time is smaller than the second print time; and displaying a position and a direction of the print medium based on the print image data.