Fixing Temperature Control Based on Developer Amount in Image Forming
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The fixability of fresh toner in a developer storage chamber immediately after supply can differ from that after repeated use, leading to inconsistent image quality and increased power consumption due to varying fixing temperatures.
Innovation Solution
An image forming apparatus that adjusts the fixing temperature based on the developer amount, setting it to a first temperature if the amount is low, a second temperature if it's increasing, and a third temperature if it reaches a target level, optimizing power consumption and fixability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the fixing temperature is reduced to decrease power consumption, then energy efficiency is improved, but the fixability of fresh toner deteriorates
Solution Approach 1:
The fixing temperature is made dynamic rather than static. The control portion adjusts the target temperature based on the developer amount detected by the detection portion. When fresh toner is detected (low developer amount), a higher temperature is applied to ensure proper fixability. As toner is consumed and replaced, the temperature is reduced to lower power consumption, achieving adaptive energy management.
Solution Approach 2:
The physical parameter of fixing temperature is changed based on the state of the developer. The system transitions between different temperature levels (first temperature for low developer amount, second temperature for high developer amount, third temperature during replenishment) to optimize both fixability and power consumption according to the actual toner condition.
2Reliability
If the fixing temperature is increased to improve fixability of fresh toner, then image quality is improved, but power consumption increases
Solution Approach 1:
The fixing temperature is dynamically adjusted based on real-time detection of developer amount. High temperature is applied only when necessary (fresh toner detected), and reduced to lower temperature when toner has been in use or replaced, eliminating unnecessary energy consumption while maintaining image quality when needed.
Solution Approach 2:
The system changes the fixing temperature parameter according to the developer state. By detecting whether the developer amount corresponds to fresh toner or used toner, the control portion selects appropriate temperature levels to balance image quality requirements with energy efficiency.
3Device complexity
If a constant fixing temperature is used regardless of developer amount, then control simplicity is maintained, but image quality consistency deteriorates
Solution Approach 1:
A feedback mechanism is implemented where the detection portion continuously monitors the developer amount and provides information to the control portion. Based on this feedback, the control portion automatically adjusts the fixing temperature to maintain consistent image quality across different toner states without requiring complex manual intervention.
Solution Approach 2:
The system performs self-adjustment of the fixing temperature based on automatic detection of developer amount. The detection and control portions work together to autonomously optimize the fixing process, eliminating the need for manual temperature adjustments and ensuring consistent image quality without increasing operational complexity.
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 approach ensures consistent image fixability while reducing power consumption by dynamically adjusting the fixing temperature according to the developer amount, enhancing operational efficiency and environmental sustainability.
Implementation Method 1
a fixing apparatus configured to fix the image to the recording material by heating the image
Data Source
AI summary
An image forming apparatus includes an image forming portion including a developer storage portion, a fixing apparatus, a detection portion configured to output a detection signal in accordance with a developer amount in the developer storage portion, and a control portion configured to control a target temperature of the fixing apparatus. The control portion is configured to set the target temperature at a first temperature if the developer amount is a first amount, set the target temperature at a second temperature lower than the first temperature if the developer amount is a second amount smaller than the first amount, and set the target temperature at a third temperature higher than the second temperature if the developer storage portion is supplied with the developer such that the developer amount is increased from the second amount to the first amount.