3D Printer Ejector Compensation via Data Replacement
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Solution Overview
Problem
Three-dimensional object printers face inefficiencies due to malfunctioning ejectors, which can lead to hours or days of wasted production time and substandard prints, as inoperative ejectors can only be detected after completion, resulting in scrapped objects and reduced yield.
Innovation Solution
A method and system that identify and compensate for malfunctioning ejectors by replacing image data values associated with inoperative ejectors with those from operative ejectors, allowing the operative ejectors to eject different materials at corresponding positions, ensuring continuous production of high-quality objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If printing continues with inoperative ejectors undetected, then productivity is maintained, but manufacturing precision deteriorates due to defective material deposition
Solution Approach 1:
The system continuously monitors material deposition quality during printing and provides feedback to detect inoperative ejectors. When defects are detected, the system automatically adjusts printing parameters or redirects material flow to compensate for the malfunctioning ejector, maintaining both productivity and precision without requiring print job interruption.
2Manufacturing precision
If printing is stopped to detect inoperative ejectors, then manufacturing precision is maintained, but productivity decreases due to wasted production time
Solution Approach 1:
The system performs preliminary detection of inoperative ejectors by monitoring material deposition characteristics during the printing process itself, rather than waiting for completion. This allows early identification and compensation for ejector failures, preventing quality degradation while avoiding production interruption.
3Device complexity
If inoperative ejectors are not compensated, then device complexity remains low, but loss of substance increases due to scrapped objects
Solution Approach 1:
The system changes printing parameters dynamically based on detected ejector performance. When an inoperative ejector is identified, the system adjusts material flow rates, deposition timing, or ejector activation patterns to compensate for the malfunction, thereby reducing material waste from scrapped objects without requiring complex hardware modifications.
Data Source
AI summary
A method for operating a three-dimensional object printer compensates for inoperative ejectors. The method identifies image data values associated with an inoperative ejector that stored in a memory with other image data values for a three-dimensional object to be printed by the three-dimensional object printer. The method replaces the image data values associated with the inoperative ejector with image data values associated with an operative ejector that correspond to a material that is different than a material ejected by the inoperative ejector and operates a plurality of ejectors with reference to the other image data values and the replaced image data values to enable the operative ejector to eject drops of the material that is different than the material ejected by the inoperative ejector into the three-dimensional object at positions where the inoperative ejector would have ejected material.