Liquid Ejecting Device Electric Field Detection Overheating
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Solution Overview
Problem
Existing liquid ejecting devices face issues with abnormal changes in the alternating current electric field due to aging or unintended usage conditions, leading to excessive heat accumulation and potential degradation of the medium and peripheral components.
Innovation Solution
A liquid ejecting device with an alternating current electric field generation unit comprising adjacent first and second electrodes, a high-frequency voltage generation unit, and a detection unit that stops the generation of high-frequency voltage based on detected changes in the electric field or temperature, ensuring safe operation and preventing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-frequency voltage is continuously generated to heat and dry the liquid on the medium, then drying efficiency is improved, but excessive heat accumulation occurs in the electrodes
Solution Approach 1:
The patent implements a feedback mechanism where a detection unit continuously monitors the alternating current electric field generated by the electrodes. When the control unit detects abnormal changes in the electric field (indicating excessive heat accumulation or aging), it automatically stops the high-frequency voltage generation. This closed-loop feedback system resolves the contradiction by dynamically adjusting operation to maintain drying efficiency while preventing dangerous heat accumulation.
2Manufacturing precision
If the alternating current electric field is used to dry the medium, then printing quality is maintained, but abnormalities occur due to aging and usage conditions
Solution Approach 1:
The detection unit continuously monitors the alternating current electric field characteristics, providing real-time feedback on the health and performance of the electrodes. This enables the control unit to detect signs of aging or abnormal usage conditions before they lead to failures, maintaining printing quality while improving reliability through early warning and automatic shutdown capabilities.
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
This configuration effectively prevents abnormal heat generation and maintains printing quality by detecting and responding to changes in the electric field, thereby enhancing safety and reducing the risk of component degradation.
Implementation Method 1
there is provided a function for generating an alternating current electric field by generation of a high-frequency voltage to positive electrodes and negative electrodes alternately disposed to dielectrically heat the liquid ejected onto the medium
Implementation Method 2
a detection unit configured to detect a change in the alternating current electric field generated from the alternating current electric field generation unit
Implementation Method 3
a temperature detection unit configured to detect a temperature. The temperature detection unit is configured to detect a temperature of any one of the conductor, the first electrode, and the second electrode
Data Source
AI summary
Provided is a liquid ejecting device. An alternating current electric field generation unit includes a first electrode and a second electrode disposed adjacent to each other, a high-frequency voltage generation unit configured to generate a high-frequency voltage to the first electrode and the second electrode, and a conductor configured to electrically couple the first electrode and the second electrode to the high-frequency voltage generation unit. Based on a result detected by a detection unit configured to detect a change in an alternating current electric field generated from the alternating current electric field generation unit, a control unit is configured to stop generation of the high-frequency voltage from the high-frequency voltage generation unit to the first electrode and the second electrode.