Liquid Jet Head Drive Board Ground Layout for Noise Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing liquid jet recording devices face challenges in improving reliability due to issues with noise interference and grounding stability in high-speed digital circuits within the drive devices, particularly in liquid jet heads.
Innovation Solution
The drive board is designed with a digital ground wiring line that is electrically coupled commonly to digital ground terminals at two or more places, providing a stable ground connection and reducing noise interference, while maintaining flexibility and efficiency in signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple digital ground terminals are provided at different places on the drive device, then noise interference is reduced and grounding stability is improved, but the device complexity and wiring arrangement become more difficult
Solution Approach 1:
The invention transitions from planar 2D wiring arrangement to 3D立体 wiring by routing the digital ground wiring line from the reverse surface of the drive board through via holes to the obverse surface, creating a multi-layer ground connection structure that reduces noise interference while managing complexity through spatial dimensionality
Solution Approach 2:
The digital ground wiring line is nested within the drive board structure by embedding it in the reverse surface and connecting it to the obverse surface through via holes, creating a compact multi-level ground connection system that provides stable grounding without excessive external wiring
2Object-affected harmful factors
If a digital ground wiring line is arranged in the mounting region of the drive device, then noise interference is reduced, but the ease of manufacture and wiring arrangement become more difficult
Solution Approach 1:
The digital ground wiring line is segmented into two parts: a first wiring line on the reverse surface and a second wiring line on the obverse surface connected by via holes. This segmentation allows the ground connection to be established without complex through-board routing, simplifying manufacturing while effectively reducing noise interference in the mounting region
Solution Approach 2:
The via holes act as intermediaries connecting the reverse surface wiring line to the obverse surface wiring line, enabling the digital ground connection to pass through the drive board structure without requiring complex manual routing, thus reducing noise while maintaining ease of manufacture
Data Source
AI summary
The drive board according to an embodiment of the present disclosure is a board configured to output a drive signal to be applied to a liquid jet head having a plurality of nozzles, including at least one drive device which is mounted on a board surface of the drive board, which is configured to generate the drive signal for jetting liquid from the nozzles, and which has a plurality of digital ground terminals located at a plurality of places different from each other, and a digital ground wiring line which is arranged in a mounting region of the drive device, and which is electrically coupled commonly to the digital ground terminals at two or more places out of the digital ground terminals at the plurality of places.