Image Forming Apparatus With Adaptive Toner Consumption Coefficients
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The dot count method for calculating toner consumption in image forming apparatuses often deviates from the actual consumption amount during toner replenishment, leading to inaccuracies in toner consumption calculations.
Innovation Solution
An image forming apparatus that includes a control unit capable of adjusting a coefficient for toner consumption calculations based on pixel counts, allowing for more accurate toner replenishment by attaching a replenishing container outside the apparatus and using gravity to move toner into the storage portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the dot count method is used to calculate toner consumption, then the calculation is simple and quick, but the accuracy of toner consumption amount deviates from actual consumption especially during replenishment
Solution Approach 1:
The patent applies dynamics by making the coefficient variable rather than fixed. The control unit dynamically adjusts the coefficient based on whether toner replenishment has occurred, transitioning between a first coefficient (before replenishment) and a second coefficient (after replenishment). This dynamic adjustment allows the system to maintain simple dot count calculation while improving accuracy by adapting to different operational states.
Solution Approach 2:
The patent changes the parameter of the coefficient used in toner consumption calculation. By modifying the coefficient value based on replenishment status, the system adjusts the calculation model to better reflect actual toner consumption patterns. This parameter change enables accurate tracking of toner usage both before and after replenishment events without complicating the overall calculation method.
2Ease of operation
If toner is replenished from outside the image forming apparatus, then the replenishing container can be attached and detached easily, but the toner consumption calculation becomes inaccurate
Solution Approach 1:
The patent implements feedback by having the control unit detect when toner replenishment occurs and use this information to adjust the coefficient for subsequent toner consumption calculations. The system receives feedback about the replenishment event (through detection of the replenishing container attachment/detachment or other detection mechanisms) and responds by changing the calculation parameter, thereby maintaining accuracy despite the operational disruption caused by replenishment.
3Device complexity
If a fixed coefficient is used for toner consumption calculation, then the calculation method is simple, but it cannot accurately reflect actual toner consumption after replenishment
Solution Approach 1:
The patent transforms the fixed coefficient into a dynamic one that changes based on operational conditions. The control unit switches between different coefficient values depending on whether replenishment has occurred, creating a simple yet adaptive calculation system that maintains low complexity while improving measurement accuracy through conditional parameter adjustment.
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
Improves the accuracy of toner consumption amount calculations by adjusting the coefficient during replenishment, ensuring precise toner management and reducing environmental impact by minimizing the need for full cartridge replacements.
Implementation Method 1
a developer in the developer supply bottle moves into the developer storage chamber by its own weight when the developer supply bottle is attached into the attachment port
Data Source
AI summary
An image forming apparatus includes a photosensitive member, a toner storage portion, a developing member configured to develop a latent image on the photosensitive member into a toner image, an attachment portion to which a replenishing container containing toner is attached, the attachment portion being configured to allow toner replenishment from the replenishing container into the toner storage portion, and a control unit configured to calculate a toner consumption amount by multiplying a count value correlated with the number of pixels constituting the toner image by a coefficient, the control unit being configured to change a value of the coefficient in a case where the toner replenishment is performed.