Inkjet Printing Head Wiring Width Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing inkjet printing apparatuses with piezoelectric elements face a challenge of increased printing head width due to the necessity of wide wiring lines to accommodate maximum current requirements, leading to a larger electric wiring substrate.
Innovation Solution
The proposed solution involves an inkjet printing apparatus with a flexible electric wiring substrate that uses multiple wiring lines with different widths to communicate driving signals to piezoelectric elements, where the control unit adjusts signal generation and selection based on use frequency information to optimize wiring line usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wiring lines are set to maximum current capacity to drive all piezoelectric elements simultaneously, then reliability of signal supply is improved, but width of electric wiring substrate increases
Solution Approach 1:
The patent applies local quality by assigning different wiring widths to different wiring lines based on their specific usage requirements. wiring lines that need to drive more piezoelectric elements simultaneously are given wider cross-sections, while lines with lower current demands have narrower cross-sections. This localized optimization resolves the contradiction by ensuring reliable signal supply where needed without uniformly increasing the overall substrate width.
Solution Approach 2:
The patent changes the parameter of wiring line cross-section from a uniform value to variable values based on current requirements. By calculating the necessary current capacity for each wiring line and adjusting its width accordingly, the system achieves both reliable signal supply for high-current lines and minimized substrate width overall, directly resolving the technical contradiction.
2Length of stationary object
If multiple wiring lines with different widths are used to optimize current capacity, then width of electric wiring substrate is reduced, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and determining the optimal wiring line configuration before the actual wiring process. The control unit calculates which piezoelectric elements can be simultaneously driven and determines the necessary current capacity for each wiring line in advance, allowing for optimized wiring width assignment without increasing operational complexity during printing.
Solution Approach 2:
The patent introduces dynamics by making the wiring line selection and configuration adaptable based on printing requirements. The system can dynamically determine which wiring lines to use and how to configure them based on the specific printing task, allowing for optimized substrate width while managing complexity through flexible, requirement-based configuration.
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
This approach allows for a reduction in the width of the electric wiring substrate and downsizes the printing head by optimizing the use of wiring lines based on the frequency of driving signal types, thereby improving the apparatus's compactness and efficiency.
Implementation Method 1
a piezoelectric element corresponding to each of the plurality of nozzles
Data Source
AI summary
An object of the present disclosure is to narrow the width of an electric wiring substrate and downsize a printing head. An aspect of the present disclosure provides an inkjet printing apparatus, including: a printing head including a plurality of nozzles ejecting ink and a piezoelectric element corresponding to each of the plurality of the nozzles; a control unit configured to control printing by the printing head; a signal generation unit configured to generate a driving signal to drive the piezoelectric element; a selection unit configured to select for each nozzle one type of the driving signal out of a plurality of types of the driving signals generated by the signal generation unit; and a plurality of wiring lines having different wiring widths from each other to communicate the plurality of types of the driving signals supplied to the selection unit from the signal generation unit.