Voltage Stabilization for Ink Discharge Inspection
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Solution Overview
Problem
Existing ink-jet printers face challenges in accurately determining whether ink is normally discharged from nozzles due to fluctuations in the electric potential difference between the printing head and the inspection area, leading to unstable voltage conditions during inspection.
Innovation Solution
A liquid discharging apparatus with a voltage supplier that generates and stabilizes an electric potential difference between a liquid discharging head and an electrode, using a voltage comparer to adjust the output voltage based on a comparing signal, ensuring the voltage remains within a predetermined range to accurately determine ink discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If voltage is applied to the cavity plate to generate electric potential difference for inspection, then ink discharge inspection can be performed, but voltage fluctuations cause unstable inspection results
Solution Approach 1:
The patent implements a feedback mechanism where the voltage comparer continuously monitors the output voltage from the boosting circuit and generates a comparing signal based on whether the voltage exceeds a predetermined threshold. This comparing signal feeds back to control the switching element, adjusting the voltage output to maintain stability within acceptable ranges, thereby resolving the contradiction between performing voltage-based inspection and maintaining voltage stability.
Solution Approach 2:
The patent dynamically adjusts the voltage parameter by controlling the switching element in the boosting circuit. When the voltage comparer detects that the voltage exceeds the predetermined threshold, it triggers the switching element to change state, thereby regulating the voltage output. This dynamic parameter adjustment ensures stable voltage conditions for accurate ink discharge inspection.
2Power
If boosting circuit is used to increase voltage for inspection, then electric potential difference is generated, but voltage becomes unstable and fluctuates
Solution Approach 1:
The voltage comparer monitors the boosting circuit output and provides feedback through the comparing signal to control the switching element. This feedback loop prevents voltage from exceeding predetermined thresholds, stabilizing the high voltage output required for inspection while preventing harmful fluctuations.
Solution Approach 2:
The patent employs dynamic control of the switching element that adjusts its state based on real-time voltage conditions. This dynamic adjustment allows the system to maintain high voltage magnitude when needed while automatically regulating to prevent instability, adapting to changing conditions during the inspection process.
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 solution stabilizes the voltage output, allowing for precise determination of ink discharge from nozzles, preventing misinterpretation of voltage fluctuations and ensuring accurate inspection results.
Implementation Method 1
a voltage supplier configured to generate an electric potential difference between the liquid discharging head and the electrode by applying a voltage to the liquid discharging head or the electrode
Implementation Method 2
a voltage comparer electrically connected to the voltage supplier. The voltage comparer includes a comparing signal output part configured to output a comparing signal indicating whether or not a magnitude of the voltage outputted from the voltage supplier is larger than a magnitude of a predetermined voltage
Data Source
AI summary
There is provided a liquid discharging apparatus including: a liquid discharging head; an electrode; a voltage supplier configured to generate an electric potential difference between the liquid discharging head and the electrode; a first output part; and a voltage comparer connected to the voltage supplier. The voltage comparer includes a comparing signal output part configured to output a comparing signal. The voltage supplier is configured to: execute boosting to increase the magnitude of the voltage to be outputted from the voltage supplier in a case that the comparing signal indicates that a magnitude of the voltage outputted from the voltage supplier is not more than a magnitude of a predetermined voltage; and stop the boosting in a case that the comparing signal indicates that the magnitude of the voltage outputted from the voltage supplier is larger than the magnitude of the predetermined voltage.