Ink Drop Size Monitoring via Halftone Calibration Feedback
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Solution Overview
Problem
Ink drop size estimation in printing systems is inaccurate due to changes in halftone calibration during printing, affecting ink usage monitoring and costing, as current methods rely on correct initial ink drop sizes which may not reflect actual usage during job production.
Innovation Solution
A system that includes processors and memory devices to receive and process ink usage, drop size, and count data for each color plane, determining accurate ink drop sizes by comparing initial and monitored data, and adjusting halftone designs to maintain factory-set responses, thereby correcting ink drop size monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If halftone calibration is adjusted during printing to maintain factory-set response, then printing quality is maintained, but ink drop sizes change causing inaccurate ink usage monitoring
Solution Approach 1:
The system receives actual ink drop count data from the printer during job production and compares it with expected drop counts. This feedback loop enables the system to detect deviations caused by halftone calibration adjustments and recalculate accurate ink usage amounts based on actual measured values rather than relying solely on theoretical drop size data.
Solution Approach 2:
The system dynamically adjusts the ink usage calculation parameters by receiving actual ink drop count data and recalculating ink usage amounts based on these changed parameters. When halftone calibration changes cause drop size variations, the system updates its internal parameters to reflect actual drop counts, thereby maintaining accurate ink usage monitoring despite parameter changes in the printing process.
2Loss of time
If initial ink drop size data is used for ink usage estimation, then ink usage can be calculated before printing, but accuracy deteriorates when halftone calibration changes during printing
Solution Approach 1:
The system performs preliminary ink usage estimation using initial ink drop size data before printing begins, allowing cost planning and resource allocation. However, it also prepares to receive and process actual ink drop count data during printing to correct any deviations, thus maintaining both advance planning capability and final accuracy.
Solution Approach 2:
The system implements a feedback mechanism where actual ink drop count data received during printing is used to verify and correct the preliminary ink usage estimates. This allows the system to maintain the benefit of advance calculation while ensuring accuracy through post-printing verification and adjustment.
3Measurement precision
If ink drop sizes are monitored accurately, then ink usage monitoring accuracy is improved, but system complexity increases due to additional data processing requirements
Solution Approach 1:
The system uses the existing ink drop count data that is already being collected for halftone calibration purposes and repurposes it for ink usage monitoring. By making the data collection process multi-functional, the system achieves accurate ink drop size monitoring without adding separate measurement hardware or significantly increasing system complexity.
Solution Approach 2:
The system combines the halftone calibration data collection process with ink usage monitoring functions. By merging these two functions into a single data processing workflow, the system achieves accurate ink monitoring while avoiding the complexity of implementing a separate dedicated monitoring system.
Data Source
AI summary
A system is disclosed. The system includes at least one physical memory device to store drop size logic and one or more processors coupled with the at least one physical memory device to execute the drop size logic to receive first ink usage amount data for each of a plurality of color planes associated with a first halftone design and print job data, receive first ink drop size data for each of a plurality of color planes associated with the first halftone design, receive second ink drop count data for each of the plurality of color planes associated with a second halftone design and the print job data and determine second ink drop size data for each of the plurality of color planes based on the corresponding first ink usage amount data, the first ink drop size data and the second ink drop count data.