Liquid Discharge Apparatus Temperature Control via Intermediary Sensor
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Solution Overview
Problem
Existing liquid discharge apparatuses face challenges in managing heat generation in propagation paths due to high currents, leading to inefficiencies in temperature control for ink viscosity adjustment, which affects discharge stability and accuracy.
Innovation Solution
A liquid discharge apparatus with a heating element and temperature control system that includes a temperature indicating section and wiring substrate, where the temperature indicating section monitors and adjusts the heating current to maintain optimal temperature, ensuring stable ink viscosity and improved discharge accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a large current is supplied to the heating element to adjust ink temperature, then the heating effect is improved, but heat generation in the propagation path increases causing temperature control instability
Solution Approach 1:
The patent introduces a temperature indicating section as an intermediary component that detects temperature in the propagation path and provides feedback to the control unit. This mediator enables indirect control of the heating process, allowing the system to compensate for heat generation in the propagation path without directly increasing current to the heating element, thus maintaining temperature control stability while achieving effective heating.
Solution Approach 2:
The patent implements a feedback mechanism where the temperature indicating section continuously monitors the temperature in the propagation path and reports to the control unit. The control unit adjusts the current to the heating element based on this feedback, creating a closed-loop control system that maintains stable temperature control even when large currents are supplied, by compensating for heat generation in the propagation path.
2Reliability
If the temperature of ink is not properly controlled, then energy consumption is reduced, but discharge stability and accuracy deteriorate
Solution Approach 1:
The patent employs feedback control where the temperature indicating section monitors ink temperature and the control unit adjusts heating current accordingly. This ensures the ink temperature is maintained within the optimal range for stable discharge, improving reliability while avoiding excessive energy consumption by only heating when and where needed, rather than continuously or excessively.
Solution Approach 2:
The patent dynamically changes the heating parameter (current to heating element) based on the detected temperature parameter. By adjusting the current according to actual temperature conditions, the system maintains optimal ink temperature for discharge stability while minimizing energy consumption by avoiding unnecessary heating when temperature requirements are already met.
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
The system effectively controls ink viscosity, enhancing discharge stability and accuracy by dynamically managing heat generation and distribution, thereby improving the quality of images formed on the medium.
Implementation Method 1
a heating element (heat exchange mechanism) for adjusting the temperature of the ink
Implementation Method 2
a first temperature indicating section provided in the first surface, in which the first temperature indicating section indicates that a temperature of the first temperature indicating section is lower than a first threshold value
Data Source
AI summary
There is provided a liquid discharge apparatus for forming an image on a medium by discharging a liquid, including: a first discharge head that discharges a liquid; and a first temperature indicating section provided in the first surface, in which the first temperature indicating section indicates that a temperature of the first temperature indicating section is lower than a first threshold value in a first state, and indicates that the temperature of the first temperature indicating section is equal to or higher than the first threshold value in a second state, and the first state and the second state change reversibly, and at least a part of the first temperature indicating section overlaps at least a part of the first propagation wiring in a normal direction of the wiring substrate.