Liquid Ejecting Head Tube Fixation Strength
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Solution Overview
Problem
Existing liquid ejecting apparatuses face challenges in efficiently replacing liquid ejecting heads due to the detachment of tubes from both the liquid ejecting head and the channel member, requiring additional work and potentially leading to residual ink spillage.
Innovation Solution
A liquid ejecting apparatus design where the fixation strength between the tube and the liquid ejecting head is greater than between the tube and the channel member, allowing for secure detachment and replacement of the head while maintaining tube connection, utilizing flexible tubes and specific fixation members to ensure secure coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fixation strength between the tube and the liquid ejecting head is equal to the fixation strength between the tube and the channel member, then the tube can be securely connected to both components, but the tube may detach from the liquid ejecting head when the head is replaced, requiring additional work and deteriorating replacement performance
Solution Approach 1:
The tube has different fixation strengths at different locations: the first fixation portion (at the liquid ejecting head side) has greater fixation strength than the second fixation portion (at the channel member side). This local differentiation allows the tube to remain securely attached to the head during replacement while still being connectable to the channel member, eliminating the need for additional detachment work.
2Reliability
If the tube is securely fixed to both the liquid ejecting head and the channel member with equal strength, then connection reliability is improved, but the tube may detach from the channel member when the head is replaced, leading to residual ink spillage
Solution Approach 1:
By making the fixation strength at the head connection greater than at the channel member connection, the design ensures that during head replacement, the tube remains securely attached to the head (preventing ink spillage) while the weaker channel member connection allows for proper detachment procedures.
Data Source
AI summary
A liquid ejecting apparatus includes a first head having a first channel pipe, a channel member having a second channel pipe, and a first tube that communicates the first channel pipe with the second channel pipe and that has flexibility. The first tube has a first end portion and a second end portion that is opposite to the first end portion. The first tube is coupled to the first channel pipe in such a manner that the first end portion covers an outer periphery of the first channel pipe. The first tube is also coupled to the second channel pipe in such a manner that the second end portion covers an outer periphery of the second channel pipe. A fixation strength between the first tube and the first channel pipe is greater than a fixation strength between the first tube and the second channel pipe.