Printing Element Board Temperature Circuit With Diode Noise Filtering
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Solution Overview
Problem
Existing temperature detection methods in printing element boards of printing apparatuses suffer from inaccurate temperature readings due to electric noise generated in the circuit, which affects the precision of temperature control for printing operations.
Innovation Solution
A temperature detecting circuit that includes diode elements connected in parallel with capacitive elements to reduce noise interference, utilizing capacitive elements to stabilize voltage readings and enhance accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a diode is used for temperature detection on the printing element board, then temperature can be detected, but highly accurate temperature detection cannot be achieved due to electric noise generated in the circuit
Solution Approach 1:
A capacitive element is introduced as an intermediary component connected in parallel with the diode element. This capacitor acts as a noise filter that mediates between the noisy circuit environment and the temperature detection function, allowing accurate temperature measurement by blocking high-frequency noise while passing the DC voltage signal from the diode
Solution Approach 2:
The harmful electric noise is extracted and separated from the temperature detection signal through the capacitive element. The capacitor removes the noise component from the voltage signal, allowing only the useful temperature-related voltage information to be measured by the detection circuit
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 proposed solution stabilizes voltage readings by reducing noise, thereby improving the accuracy of temperature detection on printing element boards, ensuring precise temperature control for printing operations.
Implementation Method 1
a capacitive element located close to the diode element and connected in parallel to the diode element
Implementation Method 2
one or more diode elements for detecting temperature of a printing element board; a terminal configured to receive, as an input, a voltage appearing at a first terminal of each of the diode elements
Data Source
AI summary
Provided is a temperature detecting circuit for printing element board including: one or more diode elements for detecting temperature of a printing element board; a terminal configured to receive, as an input, a voltage appearing at a first terminal of each of the diode elements; a connecting unit configured to electrically connect the first terminal and the terminal; and a capacitive element located close to the diode element and connected in parallel to the diode element.