Toner Case Drive Motor Segmentation for Independent Agitation
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Solution Overview
Problem
Existing toner cases with intermediate hoppers cannot agitate toner without simultaneously transporting it to the developing unit, making it difficult to detect remaining toner amounts and level the toner surface during initialization or when the toner container is replaced.
Innovation Solution
The toner case design includes a drive motor that can rotate in both forward and backward directions, allowing the transportation screw to rotate only when supplying toner, and the agitating paddles to rotate independently in both directions, enabling agitation without transport and facilitating toner level detection and surface leveling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single driving unit rotates both the agitating unit and transportation unit, then the device complexity is reduced, but the ability to agitate toner without transporting it is lost
Solution Approach 1:
The single driving unit is segmented into two independent driving units: a first driving unit that rotates only the agitating paddles, and a second driving unit that rotates only the transportation screw. This segmentation allows independent control of agitation and transportation functions, enabling agitation-only operation when needed while maintaining relatively simple device structure.
2Device complexity
If the transportation unit rotates simultaneously with the agitating unit, then the structure is simplified, but the measurement precision of remaining toner amount is reduced
Solution Approach 1:
The driving mechanism is segmented into independent control for agitation and transportation. The first driving unit controls agitation independently from the second driving unit that controls transportation. This allows the system to perform agitation without transportation, enabling the detection unit to accurately measure remaining toner amount without the interference of simultaneous transportation activity.
3Ease of operation
If agitation and transportation are coupled, then the device is simpler to operate, but the productivity during initialization is reduced
Solution Approach 1:
The system dynamically adjusts its operation mode based on needs. The first driving unit and second driving unit can operate independently or together, allowing the system to switch between agitation-only mode (for initialization and toner leveling) and combined agitation-transportation mode (for normal operation). This dynamic control improves initialization productivity while maintaining ease of operation through automated control.
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 design allows for efficient toner transportation and accurate detection of remaining toner amounts, preventing compaction and ensuring smooth supply, while enabling toner agitation during initialization and replacement scenarios.
Implementation Method 1
a drive motor 56 that rotates in forward and backward directions
Implementation Method 2
a transportation screw 35 that conveys the toner supplied from the toner container 25 to the developing unit 11
Implementation Method 3
a pair of agitating paddles 47, 52 that agitate the toner supplied from the toner container 25
Data Source
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AI summary
A toner case includes a main body that contains toner, a discharge port located in the main body through which toner is discharged, an agitating unit rotatably positioned in the main body for agitating the toner, a transportation unit rotatably positioned in the main body for transporting the toner toward the discharge port, and a driving unit that drives the transportation unit and the agitating unit. The driving unit is rotatable forward and backward. When the driving unit rotates in one rotation direction, the agitating unit and the transportation unit rotate. When the driving unit rotates in the other rotation direction, the transportation unit does not rotate and the agitating unit rotates in the same direction as a direction in which the agitating unit rotates when the driving unit rotates in the one rotation direction.