Ink Cost Estimation via Halftone Area Calculation
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Solution Overview
Problem
In the printing industry, accurately estimating the cost of ink used in print jobs is challenging due to the difficulty in measuring ink volume, leading to inaccurate bidding and potential losses in profitability.
Innovation Solution
The solution involves determining ink coverage by calculating the ratio of actual dots printed to the total number of dots that could be printed, expressing this as a percentage, and storing this data to estimate ink cost based on printed area, eliminating the need to know or estimate ink drop volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ink volume measurement methods are used to estimate ink cost, then accurate ink cost estimation can be achieved, but the measurement process becomes complex and difficult to implement
Solution Approach 1:
The patent changes the measurement parameter from ink volume (which requires complex measurement systems) to printed area (which can be easily calculated from job specifications). By expressing ink cost as a function of area rather than volume, the system achieves accurate cost estimation without complex measurement infrastructure.
Solution Approach 2:
The patent uses halftone data (a digital representation of the print job) to determine ink coverage area, rather than physically measuring actual ink consumption. This digital copy of the print data allows accurate estimation without physical measurement systems.
2Ease of manufacture
If drop size estimation methods are used to calculate ink usage, then ink cost can be estimated without complex measurement, but the estimation becomes inaccurate leading to bidding errors
Solution Approach 1:
The patent changes the fundamental parameter from drop-based estimation to area-based calculation. Instead of estimating ink usage by counting drops and assuming fixed drop sizes, the system calculates the total area covered by ink based on halftone data, providing both simplicity and accuracy.
Solution Approach 2:
The patent replaces physical measurement systems (drop size measurement, ink volume measurement) with digital image processing of halftone data. This substitution of mechanical/physical methods with digital processing achieves both ease of implementation and high precision.
3Productivity
If fixed ink cost assumptions are used for bidding, then the bidding process becomes simple and quick, but profitability is negatively impacted due to inaccurate cost estimation
Solution Approach 1:
The patent performs preliminary calculation of ink cost by analyzing halftone data before the bidding decision is made. This advance calculation of actual ink coverage area allows the bidding process to proceed quickly with accurate cost information, rather than relying on fixed assumptions.
Solution Approach 2:
The system provides feedback on actual ink coverage area derived from halftone data, allowing dynamic adjustment of bid prices based on real job characteristics rather than fixed assumptions. This feedback loop ensures profitability while maintaining bidding efficiency.
Data Source
AI summary
Estimating the cost of ink in print jobs. The cost of ink in a print job is estimated based on printed area. After determining an ink coverage value for the print jobs and determining a cost of the ink, an ink cost factor is generated over time from the cost of the ink and from the total area ink coverage. The ink cost factor is used to estimate the cost of a print job based on area.