Toner Container Discrimination via Optical Threshold Adjustment
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Solution Overview
Problem
Existing image forming apparatuses lack an efficient method to discriminate between different toner containers based on their toner amounts, leading to inaccuracies in toner supply management.
Innovation Solution
The image forming apparatus is designed with a controller that sets a threshold for discriminating between toner containers by comparing the output value from a detecting portion immediately after the first toner supply. This allows the controller to determine whether the first toner supply comes from a first toner container or a second toner container, based on predefined conditions related to the remaining toner amounts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a remaining toner amount sensor is used to estimate remaining toner amount by light receiving time, then the remaining toner amount can be monitored, but the system cannot accurately discriminate between different toner container types (first container with first toner amount vs second container with second toner amount)
Solution Approach 1:
The system performs preliminary detection of the remaining toner amount immediately after toner supply using the light receiving portion. This preliminary detection value is stored and later used as a reference to determine the toner container type when needed, rather than relying on direct identification methods
Solution Approach 2:
The patent introduces an intermediary calculation method where the controller calculates the remaining toner amount based on both the preliminary detected value and the filling amount of supplied toner. This calculated value serves as an intermediary parameter that enables indirect identification of the toner container type without requiring direct sensors for container recognition
2Adaptability or versatility
If toner is supplied from external containers (toner packs or bottles) to the developing container, then toner replenishment is enabled, but the system loses track of the original container type and toner amount
Solution Approach 1:
The system implements a feedback mechanism where the controller continuously monitors the remaining toner amount using the light receiving portion and compares it with the filling amount of supplied toner. This feedback loop allows the system to track toner consumption and reconstruct information about the supplied container type based on the relationship between initial remaining amount and supplied amount
Solution Approach 2:
The patent replaces direct mechanical or physical identification methods for container recognition with an optical detection system. The light receiving portion detects remaining toner amount optically, and the controller uses this optical data combined with supply amount data to infer container type, substituting complex mechanical identification with simpler optical sensing and computational logic
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 enables accurate discrimination between toner containers, improving the management of toner supplies and enhancing the user experience by providing reliable information on remaining toner amounts.
Implementation Method 1
a light emitting portion and a light receiving portion. The remaining toner amount sensor estimates a remaining toner amount of toner based on light receiving time of detection light emitted from the light emitting portion and passed through an inside of the developing container, received by the light receiving portion
Data Source
AI summary
When a remaining toner amount of an accommodating portion corresponding to an output value before first toner supply is a first remaining toner amount, a remaining toner amount of the accommodating portion based on a toner filling amount in the accommodating portion in an unused state and image information of an image printed from a time of the unused state to a predetermined timing is a second remaining toner amount, a condition that the first remaining toner amount is larger than the second remaining toner amount is a first condition, and a condition that the first remaining toner amount is smaller than the second remaining toner amount is a second condition, the controller sets a discrimination threshold so that the toner container used for the first toner supply is easily discriminated as the first toner container in the first condition is than in the second condition.