Liquid Discharge Head Asymmetric Substrate Positioning
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Solution Overview
Problem
The existing recording apparatuses with liquid discharge heads face challenges in minimizing enlargement when the recording head increases in size, leading to increased dimensions of the recording apparatus, due to limitations in the displacement between the center of the ink supply unit and the supporting substrate.
Innovation Solution
The solution involves a configuration where the center of the connection terminals group and the supporting substrate are positioned further displaced from the center of the case and the ink supply unit, allowing for a larger displacement in the moving direction of the liquid discharge head, thereby reducing the overall size of the recording apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the recording head is enlarged to increase ink tank capacity, then the ink tank capacity is increased, but the recording apparatus size is enlarged
Solution Approach 1:
The patent applies asymmetry by displacing the center of the connection terminals group and supporting substrate from the center of the case in the moving direction of the liquid discharge head. This asymmetric arrangement allows the ink supply unit to be positioned more efficiently, enabling larger ink tank capacity without proportionally increasing the overall recording apparatus size. The asymmetric positioning optimizes space utilization within the recording head structure.
2Length of moving object
If the center of connection terminals group is positioned at the center of the ink supply unit, then the wiring tape length is minimized, but the displacement between ink supply unit and supporting substrate is limited
Solution Approach 1:
The patent resolves the contradiction by utilizing multiple dimensions for positioning. The center of the connection terminals group is displaced from the center of the case in the moving direction (one dimension), while the supporting substrate is displaced in both the moving direction and the width direction (two dimensions). This multi-dimensional arrangement allows the wiring tape to remain relatively short while achieving the necessary displacement between the ink supply unit and supporting substrate for optimized recording head configuration.
Data Source
AI summary
A recording apparatus for performing recording by reciprocally moving a liquid discharge head includes the liquid discharge head, which includes a case, a connection terminal group including a plurality of connection terminals capable of electrically connecting to the recording apparatus and which is provided on one face of the case, a liquid discharge substrate for discharging a liquid from a discharge port according to a signal transmitted from the recording apparatus via the connection terminals, and a supporting substrate supporting the liquid discharge substrate, which is provided on another one face of the case. The recording apparatus includes a standby area provided on the one end of the recording apparatus where the liquid discharge head is on stand-by when recording is not performed, and a carriage including a connection terminal which can electrically connect to the liquid discharge head, is mounted with the liquid discharge head, and reciprocally moves between the standby area and another end of the recording apparatus.