Distributed Control Circuit Boards for Liquid Discharging Apparatus
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Solution Overview
Problem
In liquid discharging apparatuses, such as ink-jet printers, the scattered layout of components leads to long wiring, which decreases signal propagation precision and affects image quality due to wiring impedance.
Innovation Solution
The liquid discharging apparatus is designed with a specific layout where the first and second control circuit boards are positioned closer to their respective components, reducing the distance between them and minimizing the length of signal propagation paths, thereby reducing wiring impedance and improving signal precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If components are scattered inside the liquid discharging apparatus, then the layout flexibility is improved, but the wiring length increases and signal propagation precision decreases
Solution Approach 1:
The control circuit is divided into multiple independent control circuit boards (first control circuit board, second control circuit board, etc.). Each control circuit board is positioned close to its corresponding component (discharging head, component, etc.), allowing the control system to be segmented and distributed throughout the apparatus rather than concentrated in one location. This segmentation enables layout flexibility while maintaining short wiring distances for each segment.
Solution Approach 2:
The control circuit boards are arranged in a three-dimensional space within the apparatus, utilizing vertical and lateral dimensions rather than just horizontal placement. By positioning control circuit boards at different heights and locations close to their target components, the system achieves short wiring paths without requiring all components to be in a single plane, thus improving signal precision while maintaining layout flexibility.
2Measurement precision
If control circuit boards are positioned closer to their respective components, then the wiring length is reduced and signal precision is improved, but the device complexity increases
Solution Approach 1:
Each control circuit board is designed to perform multiple functions: controlling its associated component, providing electrical connection, and serving as a mounting platform for related circuitry. This multi-functionality reduces the need for separate dedicated elements for each function, thereby reducing overall device complexity despite the distributed architecture.
Solution Approach 2:
The control circuit board integrates multiple functions into a single component: it serves as both the control circuit carrier and the connection interface to the discharging head or component. By merging the control circuit, wiring harness, and connection interface into one integrated board, the overall device complexity is reduced even though multiple boards are used throughout the apparatus.
Data Source
AI summary
A liquid discharging apparatus includes: a discharging head that discharges liquid onto a medium; first and second components that are operable for discharging the liquid onto the medium; first and second control circuits that control driving of the discharging head; a first control circuit board on which the first control circuit is provided; a second control circuit board on which the second control circuit is provided; wherein the first component is electrically coupled to the first control circuit, the second component is electrically coupled to the second control circuit, a minimum distance between the first control circuit board and the first component is shorter than a minimum distance between the first control circuit board and the second component, and a minimum distance between the second control circuit board and the second component is shorter than a minimum distance between the second control circuit board and the first component.