Drive Waveform Selection for Liquid Ejection Heads
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Solution Overview
Problem
Existing liquid ejection apparatuses, such as ink jet printers, face challenges in determining optimal drive waveforms for ink ejection, as current techniques fail to effectively utilize and display valuable characteristic data obtained during the waveform search process.
Innovation Solution
An information processing apparatus that acquires and displays various pieces of information related to drive waveform candidates, allowing users to input conditions and associate evaluation information with axes, enabling the selection and display of Pareto optimal solutions for determining suitable drive waveforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multi-objective optimization is used to search for drive waveforms, then ejection performance is improved, but valuable characteristic data obtained during the search process is lost
Solution Approach 1:
The patent recovers and preserves characteristic data that would otherwise be discarded during the multi-objective optimization search process. By storing evaluation information for each candidate drive waveform in a database, the system recovers valuable data about waveform characteristics and ejection performance, making it available for later analysis and display.
Solution Approach 2:
The patent implements feedback by displaying the recovered characteristic data in a visual format that shows the relationship between drive waveform parameters and ejection performance. This feedback loop allows users to understand which waveform characteristics lead to better performance, enabling informed decision-making for determining the optimal drive waveform.
2Manufacturing precision
If multiple parameters of drive waveform candidates are used for optimization, then ejection performance is improved, but user understanding of parameter relationships becomes difficult
Solution Approach 1:
The patent transforms multi-dimensional parameter relationships into a two-dimensional visual display format. By plotting drive waveform parameters on one axis and evaluation information on another axis, the system reduces the complexity of understanding multiple parameters while preserving the relationships between them, making it easier for users to comprehend parameter interactions.
Solution Approach 2:
The patent creates visual copies of the complex parameter relationships through graphical representation. Instead of presenting raw numerical data for multiple parameters, the system generates visual displays that replicate the essential relationships in an easily interpretable format, allowing users to quickly grasp the connections between waveform parameters and ejection performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the determination of optimal drive waveforms by effectively utilizing and displaying characteristic data, improving ejection performance and user understanding of the relationship between different waveform parameters.
Implementation Method 1
a liquid such as an ink is ejected from a nozzle by applying a drive pulse to a drive element such as a piezoelectric element
Data Source
AI summary
Provided is an information processing apparatus used in order to determine a drive waveform to be applied to a liquid ejection head, including: an acquisition unit that acquires a plurality of pieces of information being different from one another in terms of each of a plurality of candidates for the drive waveform; a second reception unit that receives input by a user regarding first condition information out of the plurality of pieces of information; and a first display unit that performs display corresponding to the candidates for the drive waveform satisfying a condition indicated by the first condition information while associating first evaluation information out of the plurality of pieces of information with a first axis and associating second evaluation information out of the plurality of pieces of information with a second axis intersecting with the first axis, respectively.