Dynamic Heating Power Control for Inkjet Recording Apparatus
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Solution Overview
Problem
The existing recording apparatuses face issues with excessive power consumption and insufficient driving power for recording devices due to temperature detection errors, leading to inefficient heat control and potential damage from exceeding power limits.
Innovation Solution
A recording apparatus with multiple heating and detection devices, an acquisition unit for representative temperature, a determination unit for power limits, and a heat control unit that dynamically adjusts heating power based on detected temperatures and thresholds to prevent excessive power consumption and ensure sufficient driving power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fixed temperature threshold is set to a lower value to account for detection errors, then heat control is performed more reliably, but the heating device is driven unnecessarily frequently, increasing power consumption
Solution Approach 1:
The patent applies dynamics by making the temperature threshold variable rather than fixed. The threshold is dynamically adjusted based on the difference between detected temperature and calculated actual temperature. When detection error is large, the threshold is lowered to ensure heat control reliability; when detection error is small, the threshold is raised to reduce unnecessary heating operations and power consumption.
Solution Approach 2:
The patent changes the parameter of temperature threshold from a fixed value to a variable value that adapts to detection conditions. By calculating the actual temperature and comparing it with the detected temperature, the system determines an appropriate threshold that balances reliability and power consumption based on current operating conditions.
2Loss of energy
If the driving power of the heating device is limited to prevent excessive power consumption, then power limits are not exceeded, but the driving power of recording devices may become insufficient
Solution Approach 1:
The patent implements feedback by continuously monitoring the actual temperature (calculated from detected temperature and correction values) and using this information to dynamically adjust the temperature threshold for heat control. This feedback mechanism ensures that heating is activated only when truly necessary, preventing excessive power consumption while maintaining sufficient power for recording devices by avoiding unnecessary heating operations.
3Speed
If the detection device is located near the heating device for effective temperature monitoring, then heat control responsiveness is improved, but the detected temperature is higher than the actual ink temperature due to heat influence
Solution Approach 1:
The patent introduces an intermediary calculation process that corrects the detected temperature to obtain the actual temperature. Instead of placing the detection device far from the heating device (which would reduce responsiveness), the system uses a correction value based on the difference between detected and calculated actual temperatures to compensate for the heat influence, maintaining both responsiveness and accuracy.
Solution Approach 2:
The patent changes the temperature parameter by introducing a correction value that adjusts the detected temperature to reflect the actual ink temperature. This parameter transformation allows the system to use a detection device located near the heating device for responsive monitoring while correcting the temperature reading to account for heat influence.
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 effectively suppresses excess power consumption and maintains sufficient driving power for recording devices by dynamically adjusting heating power limits based on temperature deviations, preventing damage and ensuring stable operation.
Implementation Method 1
first and second heating devices to heat ink in a vicinity of recording devices
Implementation Method 2
first and second detection devices to detect temperatures in the vicinity of recording devices
Implementation Method 3
recording devices generating heat energy for ejection of ink
Data Source
AI summary
A recording apparatus includes a recording head that includes a plurality of recording devices containing ink, first and second heating devices, and first and second detection devices. The recording devices each generate energy for ejection of the ink, the first and second heating devices respectively heat the ink in a vicinity of recording devices located at first and second positions of the recording devices, and the first and second detection devices respectively detect temperatures in the vicinity of the recording devices located at the first and second positions. The recording apparatus includes an acquisition unit configured to acquire information relating to a representative temperature of the temperatures detected by the first and second detection devices, and a decision unit configured to decide an upper limit of driving power of each of the first and second heating devices.