Load Absorbing Unit for Liquid Ejecting Apparatus
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Solution Overview
Problem
Existing liquid ejecting apparatuses face issues with heat generation from driving substrates causing nozzle clogging and applying unwanted loads to the ejecting units, as heat transfer and substrate positioning configurations often lead to adverse effects.
Innovation Solution
Incorporating a load absorbing unit with an elastic body to reduce the force applied to the ejecting unit from the driving substrate side, and using accommodating units to manage the positioning of the ejecting, driving, and control substrates, while allowing for movement regulation to prevent heat transfer and load application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the driving substrate is disposed in the vicinity of the ejecting unit to transmit drive force, then the drive transmission efficiency is improved, but heat generated from the driving substrate is transferred to the ejecting unit causing nozzle clogging
Solution Approach 1:
A load absorbing unit is introduced as an intermediary component between the driving substrate and the ejecting unit. This load absorbing unit absorbs physical loads including heat from the driving substrate, preventing heat transfer to the ejecting unit while still allowing drive force transmission. The load absorbing unit acts as a mediator that selectively transmits mechanical drive forces while blocking thermal energy transfer.
Solution Approach 2:
The carriage structure is segmented into distinct functional zones: a driving substrate accommodating unit that houses the driving substrate, a load absorbing unit that intercepts heat and loads, and an ejecting unit accommodating unit that protects the ejecting unit. This spatial segmentation allows the driving substrate to operate close to the ejecting unit for efficient drive transmission while physically separating the heat sources through intermediate structures.
2Device complexity
If the driving substrate is disposed close to the ejecting unit for compact design, then the device complexity is reduced, but physical loads are applied to the ejecting unit from the driving substrate side
Solution Approach 1:
The load absorbing unit serves as a mediator that absorbs physical loads including pushing forces and pulling forces from the driving substrate before they reach the ejecting unit. This intermediary structure protects the ejecting unit from unwanted mechanical loads while maintaining the compact carriage design where the driving substrate remains in proximity to the ejecting unit for efficient drive transmission.
Solution Approach 2:
The load absorbing unit provides beforehand cushioning by absorbing physical loads from the driving substrate before these loads can affect the ejecting unit. This protective measure is built into the carriage structure in advance, ensuring that the ejecting unit is always protected from unwanted mechanical forces during operation.
3Object-affected harmful factors
If the driving substrate is erected with respect to the ejecting unit to prevent heat transfer, then heat transfer is reduced, but physical loads are applied to the ejecting unit
Solution Approach 1:
The load absorbing unit acts as a dual-function intermediary: it absorbs heat from the driving substrate to prevent heat transfer to the ejecting unit, and simultaneously absorbs physical loads including pushing and pulling forces. This single intermediary component resolves both the heat transfer problem and the physical load problem that arise from erecting the driving substrate relative to the ejecting unit.
Solution Approach 2:
The load absorbing unit is designed with multi-functionality, serving both as a thermal barrier to prevent heat transfer and as a mechanical buffer to absorb physical loads. This universal component addresses multiple problems (heat transfer and physical loads) simultaneously, eliminating the need for separate protective structures for each issue.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively suppresses the application of loads and heat transfer from the driving substrate to the ejecting unit, reducing the risk of clogging and improving the operational stability of the liquid ejecting apparatus.
Implementation Method 1
the load absorbing unit includes the elastic body
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
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 load absorbing unit (42) which absorbs a physical load with respect to the ejecting unit (7) from the driving substrate (40) side. 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.