Inkjet Warming Device With Real-Time Heating Medium Shortage Detection
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Solution Overview
Problem
Existing image forming apparatuses using inkjet systems face challenges in efficiently warming ink due to non-uniform temperature distribution and lack of real-time monitoring for heating medium shortages, which can affect image quality and printing efficiency.
Innovation Solution
A warming device comprising a corrugated tube with a spiral portion, a storing portion for a liquid heating medium, a heater, a contact-type temperature sensor, and a drive control portion that controls the heater based on detected temperature, along with a determination processing portion to assess heating medium shortages, ensuring uniform temperature and preventing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heater is used to warm ink in image forming apparatus, then the ink temperature can be increased, but non-uniform temperature distribution occurs causing overheating in some areas
Solution Approach 1:
The warming device divides the heating process into multiple independent heating zones along the ink flow path. Each zone has its own heater that can be controlled separately, ensuring uniform temperature distribution throughout the ink without localized overheating. This segmentation allows progressive warming of ink as it flows through each zone.
Solution Approach 2:
The heating system uses dynamic control where the heater operation is adjusted based on real-time temperature feedback from sensors. The control unit modulates heater power dynamically to maintain optimal temperature distribution, preventing both overheating and underheating conditions in different regions of the ink supply.
2Reliability
If traditional warming devices are used, then heating function is provided, but real-time monitoring for heating medium shortages is lacking
Solution Approach 1:
The warming device incorporates temperature sensors that continuously monitor the ink temperature and provide feedback to the control unit. Additionally, the system monitors heating medium levels in real-time, enabling early warning of shortages before they affect heating performance. This feedback mechanism ensures reliable operation and prevents thermal runaway conditions.
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 solution ensures rapid and uniform temperature distribution of the ink, preventing overheating and allowing for real-time monitoring of heating medium levels, thereby enhancing image forming efficiency and reliability.
Implementation Method 1
a heater which heats the storing portion
Implementation Method 2
a contact-type temperature sensor which is provided at a position higher than the spiral portion in the storing portion and is used for detecting a temperature of the heating medium
Data Source
AI summary
A warming device includes a corrugated tube, a storing portion, a heater, a temperature sensor, a drive control portion, and a determination processing portion. The corrugated tube includes a spiral portion. The storing portion stores the spiral portion and a liquid heating medium used for warming the spiral portion. The heater heats the storing portion. The temperature sensor is of a contact type, is provided at a position higher than the spiral portion, and is used for detecting a temperature of the heating medium. The drive control portion controls drive of the heater based on a detection temperature detected by the temperature sensor. The determination processing portion determines, based on the detection temperature obtained after a start of the drive of the heater, whether it is a shortage state where a storage amount of the heating medium in the storing portion falls below a predetermined lower limit amount.