Carriage Fixing Unit Suppresses Load on Liquid Ejecting Nozzles
Solution Overview
Problem
In liquid ejecting apparatuses, the heat generated by the driving substrate can cause nozzle clogging and apply a load to the ejecting unit, as existing configurations either allow easy heat transfer or isolation, leading to undesirable effects.
Innovation Solution
A fixing unit is provided to maintain the position of the driving substrate relative to the ejecting unit, preventing movement and heat transfer, and incorporating a load-absorbing mechanism to mitigate physical loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the driving substrate is disposed close to the ejecting unit to reduce device complexity, then the device structure is simplified, but heat from the driving substrate transfers to the ejecting unit causing nozzle clogging
Solution Approach 1:
A heat insulating member is introduced as an intermediary between the driving substrate and the ejecting unit. This mediator blocks heat transfer from the driving substrate to the ejecting unit, preventing nozzle clogging while allowing the components to remain in close proximity, thus maintaining simple device structure.
Solution Approach 2:
The device is segmented into distinct thermal zones by positioning the ejecting unit and driving substrate on opposite sides of the carriage, with the heat insulating member creating a thermal boundary. This segmentation prevents heat propagation while maintaining functional integration.
2Object-affected harmful factors
If the driving substrate is isolated from the ejecting unit to prevent heat transfer, then nozzle clogging is prevented, but a load is applied to the ejecting unit from the driving substrate
Solution Approach 1:
The heat insulating member serves as a mechanical intermediary that transmits forces between the driving substrate and the ejecting unit while blocking heat transfer. This allows force transmission for positioning and operation without thermal coupling, preventing both nozzle clogging and excessive load accumulation.
Solution Approach 2:
The heat insulating member provides localized thermal insulation at the interface between the driving substrate and ejecting unit, while maintaining mechanical coupling in the same location. This local differentiation allows simultaneous achievement of thermal isolation and mechanical force transmission.
3Ease of manufacture
If the position of the driving substrate is not fixed relative to the ejecting unit, then ease of manufacture is improved, but heat transfer and load application occur
Solution Approach 1:
The heat insulating member acts as a pre-fabricated intermediary component that simplifies assembly by providing both thermal insulation and mechanical positioning in a single element. This mediator allows easy manufacturing and assembly while preventing heat transfer and load application simultaneously.
Data Source
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AI summary
A load applied to an ejecting unit from a driving substrate side is suppressed. A liquid ejecting apparatus (1) which ejects liquid onto a medium includes a carriage (6) which includes a control substrate (41) configuring at least a part of a control unit (23) which controls driving of the entire liquid ejecting apparatus (1), an ejecting unit (7) which ejects the liquid, and a driving substrate (40) which is connected to the control substrate (41) and the ejecting unit (7), and drives the ejecting unit (7), in which the carriage (6) is provided with a fixing unit (21) which fixes a position of the driving substrate (40) with respect to a position of the ejecting unit (7). By adopting the liquid ejecting apparatus (1) with such a configuration, it is possible to prevent a load from being applied to the ejecting unit (7) from the driving substrate (40) side.