Drive Pulse Waveform Selection Under Exclusion Conditions
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Solution Overview
Problem
Existing methods for determining drive waveforms in liquid ejecting apparatuses, such as ink jet printers, do not adequately consider conditions other than ejection characteristics, limiting their usability.
Innovation Solution
A method and device that acquire exclusion conditions and determine drive waveforms based on multiple candidate waveforms, incorporating user input and additional criteria beyond ejection characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the waveform is determined based only on ejection characteristics, then the ejection performance is optimized, but the waveform may not be suitable for other conditions such as patent compliance
Solution Approach 1:
The waveform determination process is divided into multiple independent evaluation stages: first evaluating ejection characteristics, then separately evaluating patent compliance and other conditions. Each stage filters candidate waveforms independently, allowing comprehensive assessment without compromising any single criterion.
Solution Approach 2:
The patent introduces an exclusion condition as an intermediary mechanism that mediates between ejection characteristic optimization and patent compliance. The exclusion condition acts as a filter that removes waveforms violating patent requirements from the candidate set, enabling the system to balance performance optimization with legal constraints.
2Adaptability or versatility
If multiple evaluation criteria are incorporated, then the waveform determination becomes more comprehensive, but the complexity of the determination process increases
Solution Approach 1:
The complex evaluation process is segmented into distinct, manageable stages: ejection characteristic evaluation, patent compliance evaluation, and other condition evaluations. Each stage handles a specific aspect independently, reducing the cognitive load and computational complexity compared to a monolithic evaluation system.
Solution Approach 2:
The patent performs preliminary filtering of candidate waveforms based on exclusion conditions before final selection. By eliminating incompatible waveforms early in the process, the system reduces the search space and simplifies subsequent optimization steps, preventing complexity from compounding.
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 drive waveforms that meet specific user-defined conditions, enhancing the usability and effectiveness of liquid ejection systems.
Implementation Method 1
a drive pulse is applied to a driven element, such as a piezoelectric element, to eject a liquid, such as ink, from a nozzle
Data Source
AI summary
A drive waveform determination method determines a waveform of a drive pulse to be applied to a driven element provided in a liquid ejection head for ejecting a liquid and includes a first process of acquiring an exclusion condition and a second process of determining the waveform of the drive pulse based on multiple candidate waveforms and the exclusion condition.