Inkjet Head Synchronization for 3D Printing Layer Accuracy
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Solution Overview
Problem
The existing inkjet printing methods for creating three-dimensional effects are cumbersome and prone to errors, especially when printing multiple layers of white ink and color ink, as they require precise positioning and can lead to inefficiencies in the printing process.
Innovation Solution
A printing control method that adjusts the scan times and movement of the inkjet head based on the comparison of first and second scan times, allowing for simultaneous ejection of inks in the main scan direction and controlled movement in sub-scan directions to optimize ink placement and reduce positioning errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple layers of white ink and color ink are printed separately using prior art methods, then the three-dimensional effect and color quality can be achieved, but the printing process becomes cumbersome and positioning errors occur
Solution Approach 1:
The patent combines the printing of white ink and color ink into a single integrated process. By using a dual-inkjet-head system that ejects both white ink and color ink simultaneously, the method merges what were previously separate printing operations into one coordinated process, eliminating the need for multiple separate printing passes and reducing positioning errors between layers.
Solution Approach 2:
The patent applies preliminary action by pre-positioning both white ink and color ink in the inkjet head before the printing process begins. The system prepares the ink ejection coordinates and timing in advance, allowing both inks to be deposited in their correct positions simultaneously from the start, rather than requiring sequential printing and re-positioning operations.
2Quantity of substance
If multiple scanning passes are used to print white ink layers followed by color ink, then adequate ink coverage and layering are achieved, but the printing time and process efficiency decrease
Solution Approach 1:
The patent implements continuity of useful action by enabling the inkjet head to eject both white ink and color ink in a single continuous scanning motion. This eliminates the idle time and re-positioning required between separate white ink and color ink printing passes, maintaining continuous productive action throughout the printing process while ensuring adequate ink coverage through coordinated ejection timing.
Solution Approach 2:
The patent merges multiple scanning passes into a single integrated scanning operation. By coordinating the ejection of white ink and color ink within one scanning pass, the system combines what were previously multiple sequential operations into one efficient process, maintaining adequate ink coverage while significantly improving printing speed and productivity.
3Stability of the object's composition
If separate printing processes are used for white ink substrate and color ink overlay, then layer distinctness is achieved, but positioning errors and process complexity increase
Solution Approach 1:
The patent uses the inkjet head itself as an intermediary that coordinates the deposition of both white ink and color ink. By controlling the ejection timing and position of both inks from a single integrated system, the method ensures that each ink layer is placed with high precision in its designated area, maintaining layer distinctness while eliminating positioning errors that would occur with separate printing processes.
Solution Approach 2:
The patent applies preliminary action by pre-calculating and pre-positioning the ejection coordinates for both white ink and color ink before printing begins. This advance preparation ensures that both inks are deposited in their correct positions simultaneously, maintaining clear layer boundaries and distinctness while achieving high positioning accuracy that would be difficult to obtain with sequential printing processes.
Data Source
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AI summary
A printing control method, device and a printer are provided. The method includes: acquiring first scan times of the first ink used for printing a unit area; acquiring second scan times of the second ink used for printing a unit area; comparing the first scan times with the second scan times; according to the comparison result, controlling the printer to eject the first ink or/and the second ink in each scan in the main scan direction. The solution of the present disclosure not only overcomes the problem that the printing process is cumbersome and may have errors, but also makes the printing of three-dimensional effect image efficient and quick.