Detachable Head Unit Substrate for Inkjet Maintenance
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Solution Overview
Problem
Existing maintenance processes for head and flow path members in image recording devices are inefficient due to interference from the electrical circuit substrate, hindering effective maintenance and leading to issues with ink adhesion from UV irradiation.
Innovation Solution
A head unit design with a detachable configuration, where the electrical circuit substrate is held in a first holding member and the head and flow path member are held in a second holding member, allowing for separation and easy maintenance without interference from the electrical circuit substrate, and incorporating a connecting member for signal transmission and attachment members like screws for easy detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electrical circuit substrate is supported on the same support substrate as the head and flow path member, then the structure is simplified and integrated, but the maintenance work efficiency deteriorates due to interference from the electrical circuit substrate
Solution Approach 1:
The support substrate is divided into a first holding member for the electrical circuit substrate and a second holding member for the head and flow path member. These holding members can be detached from each other, allowing the head and flow path member to be separated for maintenance without interfering with the electrical circuit substrate. This segmentation resolves the contradiction by maintaining structural integration during operation while enabling efficient maintenance through separation.
Solution Approach 2:
The holding members are designed with detachable connections, transforming the static integrated structure into a dynamic configuration that can switch between integrated (for operation) and separated (for maintenance) states. This dynamic capability allows the system to optimize for both structural simplicity and maintenance efficiency at different operational phases.
2Ease of operation
If the head and flow path member are maintained with the electrical circuit substrate present, then no additional disassembly is needed, but the maintenance process becomes obstructed and less efficient
Solution Approach 1:
The support substrate is segmented into separate holding members that can be independently manipulated. The second holding member containing the head and flow path member can be detached from the first holding member, providing unobstructed access to the head and flow path member for maintenance while leaving the electrical circuit substrate intact and in place.
3Reliability
If the electrical circuit substrate and head are permanently fixed together, then connection reliability is improved, but maintenance requires complete disassembly increasing time and complexity
Solution Approach 1:
The connection between holding members is designed to be detachable yet stable during operation. The detachable connection mechanism maintains reliable electrical and mechanical connections when assembled, while allowing controlled separation when maintenance is required. This dynamic connection capability resolves the contradiction between connection reliability and maintenance ease by providing stability during operation and accessibility during maintenance.
Data Source
AI summary
An electrical circuit substrate, a first holding member holding the electrical circuit substrate, a head configured to discharge liquid, a flow path member having a flow path in which flows the liquid supplied to the head, and a second holding member holding the head and the flow path member are provided. The first holding member and the second holding member are detachably attached with each other.