Print Fluid Drop Adjustment via Media Temperature Compensation
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Solution Overview
Problem
Print systems face challenges in maintaining accurate color reproduction due to media temperature variations, which cause changes in dot gain and color perception, as existing technologies do not effectively compensate for these changes in real-time during the printing process.
Innovation Solution
A print apparatus comprising a temperature engine, compensator engine, and control engine that identifies media temperature, determines the necessary number of print fluid drops based on temperature, and generates instructions to adjust fluid ejection, using a depletion mask to compensate for temperature-induced color deviations, ensuring consistent color output across varying media temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If print fluid ejection is performed without temperature compensation, then the printing process is simple and fast, but color reproduction accuracy deteriorates due to media temperature variations causing dot gain changes
Solution Approach 1:
The system performs preliminary temperature measurement of the media before printing, and pre-calculates the appropriate depletion mask based on the measured temperature. This allows the printing process to proceed with accurate color reproduction without requiring complex real-time adjustments during printing.
Solution Approach 2:
The system incorporates temperature sensing feedback to adjust the depletion mask applied during printing. By continuously monitoring media temperature and adjusting the depletion mask accordingly, the system maintains color reproduction accuracy while managing process complexity through automated feedback control.
2Manufacturing precision
If real-time temperature compensation is implemented, then color reproduction accuracy is maintained, but processing time increases due to temperature measurement and adjustment calculations
Solution Approach 1:
The system measures media temperature and calculates the appropriate depletion mask before the printing process begins. This preliminary action eliminates the need for time-consuming real-time calculations during printing, maintaining color consistency while minimizing processing time delays.
Solution Approach 2:
The system dynamically adjusts the depletion mask based on measured temperature conditions. By using pre-computed temperature-specific depletion masks and applying them appropriately during printing, the system achieves color consistency without the processing overhead of continuous real-time adjustments.
3Manufacturing precision
If depletion mask adjustment is applied, then dot gain effects are compensated, but the system complexity increases due to additional temperature sensing and control mechanisms
Solution Approach 1:
The system uses temperature sensing feedback to automatically adjust the depletion mask. This feedback mechanism enables accurate dot gain compensation while managing system complexity through automated control that responds to actual temperature conditions without requiring overly complex manual adjustment mechanisms.
Data Source
AI summary
In an example, a print system identifies a number of drops to eject corresponding to an expected variation in print fluid based on media temperature and generate print instructions to operate a fluid eject device to that effect. In another example, a print system includes a temperature engine to identify a temperature, a compensator engine to identify a number of drops of print fluid based on the media temperature, and a control engine to generate print instructions to operate a fluid ejection device to place the number of drops of print fluid on media.