Developer Conveyance Spiral Wing and Paddle Agitation
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Solution Overview
Problem
Conventional developing devices lack the ability to effectively convert the conveyance direction of a developer while agitating it, leading to inefficiencies in mixture and agitation, especially under conditions of deteriorated flow properties due to humidity and temperature changes.
Innovation Solution
A developer conveyance device with a spiral wing around a rotation shaft and paddle parts arranged perpendicular to the shaft core, where the paddle parts are positioned with varying protrusion and width measurements to enhance agitation and conveyance, and movement block parts are used to prevent clumping, allowing for smooth direction conversion of the developer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional agitating members are used, then agitation function is provided, but conveyance direction conversion ability is insufficient
Solution Approach 1:
The rotation shaft is designed to perform multiple functions: it serves as both the rotation axis for the agitating member and as the conveyance path for the developer. The spiral wing members on the rotation shaft simultaneously provide agitation through rotation and conveyance through their螺旋 structure, eliminating the need for separate components and improving direction conversion capability.
Solution Approach 2:
The invention merges the agitation function and conveyance function into a single integrated system. The agitating member is formed to extend along the rotation shaft with spiral wing members that both agitate the developer and convey it in the axial direction, combining two separate functions into one unified mechanism.
2Reliability
If uniform paddle parts are used, then simple structure is maintained, but agitation effectiveness decreases under deteriorated flow properties
Solution Approach 1:
The paddle parts are designed with non-uniform characteristics, where each paddle has different protrusion measurements and width measurements from the rotation shaft. This local variation in geometry allows different regions of the developer to be agitated differently, improving effectiveness under deteriorated flow properties while maintaining a relatively simple overall structure.
Solution Approach 2:
The paddle parts are arranged asymmetrically around the rotation shaft with varying protrusion and width measurements. This asymmetric configuration creates different agitation patterns in different angular positions, enhancing the ability to convert conveyance direction while preventing clumping even when flow properties deteriorate.
3Productivity
If paddle parts with varying measurements are used, then agitation ability is improved, but manufacturing complexity increases
Solution Approach 1:
The agitating member is segmented into multiple discrete paddle parts that can be independently designed and manufactured. Each paddle part has specific protrusion and width measurements optimized for its position, allowing modular manufacturing while achieving complex agitation patterns. The segmented structure facilitates easier fabrication compared to a monolithic design.
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
The solution enhances agitation ability and ensures smooth conveyance of the developer by converting its direction effectively, even under adverse conditions, thereby improving the overall performance of the developing device.
Implementation Method 1
a spiral wing toward an axial direction is formed around a rotation shaft... the developer is conveyed in an axial direction by a spiral wing
Implementation Method 2
a plurality of paddle parts for conveying the developer in a direction that is perpendicular to a shaft core are formed around the rotation shaft... the developer is moved into a direction being perpendicular to the axial direction being agitated by the paddle parts
Data Source
AI summary
There is provided a developer conveyance member that conveys a contained developer from one end side of a delivery region to other end of the delivery region while agitating the contained developer in a developer container, in which the developer is contained. Around a rotation shaft of the developer conveyance member, a spiral wing toward from one end side to other end side is formed. A plurality of paddle parts for conveying the developer in a direction that is perpendicular to a shaft core are formed around the rotation shaft in a delivery region. The paddle parts are arranged with their positions deviated in a circumferential direction.