Dynamic Toner LOW Threshold Adjustment by Cartridge Type
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Solution Overview
Problem
Existing image forming apparatuses face inaccuracies in toner prediction when using cartridges different from the assumed type, leading to low accuracy in toner LOW detection, despite user attempts to adjust the toner LOW threshold value.
Innovation Solution
The apparatus allows controlled adjustment of the toner LOW threshold value based on cartridge type, enabling precise toner prediction by integrating cartridge information and sensor data to determine when to change the threshold value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the toner LOW threshold value can be changed at any time, then the user can improve the accuracy of toner LOW detection, but the accuracy of toner prediction decreases when using cartridges different from the assumed type
Solution Approach 1:
The patent changes the parameter of toner LOW threshold value from fixed to dynamically adjustable based on cartridge type. The system stores multiple threshold values corresponding to different cartridge types and selectively applies the appropriate threshold based on the installed cartridge, thereby maintaining both measurement precision and reliability across different cartridge variations.
Solution Approach 2:
The patent makes the toner LOW threshold value dynamic rather than static. The threshold value automatically changes based on the detected cartridge type, allowing the system to adapt to different toner consumption characteristics of various cartridges while maintaining accurate prediction.
2Productivity
If a preset toner consumption coefficient is used, then the system can perform toner prediction, but the prediction accuracy becomes low when using cartridges different from the assumed type
Solution Approach 1:
The patent changes the toner consumption coefficient from a single preset value to multiple values corresponding to different cartridge types. The system stores different consumption coefficients in storage units and selects the appropriate coefficient based on the installed cartridge type, thereby maintaining accurate toner prediction across various cartridge variations.
Solution Approach 2:
The patent segments the toner consumption coefficient into multiple discrete values, each corresponding to a specific cartridge type. This segmentation allows the system to match the appropriate consumption coefficient to the installed cartridge, improving prediction accuracy for different cartridge variations.
3Stability of the object's composition
If the toner LOW threshold value is fixed, then the system maintains stable operation, but the user cannot improve accuracy by adjusting the threshold
Solution Approach 1:
The patent transitions the toner LOW threshold value from a fixed static parameter to a dynamic parameter that automatically adjusts based on cartridge type. This maintains system stability through automated selection while enabling accuracy improvement through adaptation to different cartridge characteristics.
Solution Approach 2:
The system performs self-adjustment of the toner LOW threshold value based on the detected cartridge type without requiring manual user intervention. The controller automatically selects the appropriate threshold from stored values, maintaining stability while improving accuracy for the specific cartridge installed.
Data Source
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AI summary
If a cartridge is a predetermined cartridge, change of a toner LOW threshold value is permitted. On the other hand, if the cartridge is not the predetermined cartridge, change of the toner LOW threshold value is inhibited.