Developing Cartridge Conductive Switching for Compact Detection

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Solution Overview

Problem

Existing developing cartridges in imaging devices require complex transmission mechanisms, hindering miniaturization and generating mechanical collision noise during detection processes.

Innovation Solution

A developing cartridge design featuring a conductive assembly with an elastically deformable electrical connection portion and a voltage control member that switches between connected and non-connected states, simplifying the structure and enabling precise detection without mechanical collisions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a traditional transmission mechanism is used for detection, then the detection function can be achieved, but the structure becomes complex and miniaturization is hindered

Engineering Contradiction:

Improvestructure complexityVSAvoiddetection precision

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent replaces the traditional mechanical transmission mechanism with a magnetic field-based detection system. The second drive force receiving member generates a magnetic field that directly interacts with the detection device, eliminating the need for complex mechanical transmission components while achieving accurate detection of the developing cartridge's installation state and parameters.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The drive force receiving member serves dual functions: it receives driving force to rotate the developing roller during normal operation, and simultaneously generates a magnetic field for detection purposes. This multi-functionality reduces the need for separate detection mechanisms, simplifying the overall structure while maintaining detection precision.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Object-affected harmful factors

If a mechanical transmission mechanism is used, then detection can be performed, but mechanical collision noise is generated degrading user experience

Engineering Contradiction:

Improvemechanical collision noiseVSAvoiduser experience

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent eliminates mechanical collision noise by replacing the mechanical transmission mechanism with a magnetic field-based detection system. The magnetic field interaction between the second drive force receiving member and the detection device occurs without physical contact or mechanical impact, thereby eliminating the harmful collision noise while maintaining effective detection functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Volume of moving object

If numerous transmission mechanisms are used, then detection functionality is achieved, but miniaturization of the developing cartridge is impeded

Engineering Contradiction:

Improvecartridge sizeVSAvoidtransmission mechanism complexity

Core Design Contradiction:

Volume of moving objectVSDevice complexity

Solution Approach 1:

The patent achieves miniaturization by substituting numerous mechanical transmission components with a compact magnetic field-based detection system. The second drive force receiving member generates a magnetic field that can be detected through the cartridge structure, eliminating the need for multiple mechanical transmission stages and allowing for a more compact cartridge design.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent combines the driving function and detection function into an integrated system. The drive force receiving member that normally rotates the developing roller also serves as the detection element by generating a magnetic field, merging two previously separate functions into one component and reducing overall cartridge size.

Inventive Principle:

Principle #5Merging (Combining)

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

Facilitates miniaturization and enhances detection precision with reduced mechanical noise, improving user experience by simplifying the construction and optimizing electrical contact stability.

Implementation Method 1

the first electrical connection portion is made of an elastic conductive material

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the first electrical connection portion is configured to electrically contact the first inner wall

Methodology Applied

Scientific EffectElectrical Conduction: Conduction (electrical)

Data Source

PatentUS12411453B2Developing cartridge

Publication Date: 2025.09.09 ZHUHAI YANQI TECHNOLOGY CO LTD

AI summary

A developing cartridge includes a developing frame, a developing roller, a first drive force receiving member, and a first end cover. The first drive force receiving member is configured to receive a driving force to drive the rotation of the developing roller. The developing cartridge further includes a conductive assembly and a first voltage control member. The conductive assembly is capable of switching internally between an electrically connected state and an electrically non-connected state, and the conductive assembly is provided with a first electrical connection portion that is elastically deformable. The first voltage control member is rotatably mounted on the first end cover and configured to move in response to movement of the first drive force receiving member, thereby switching the conductive assembly between the electrically connected state and the electrically non-connected state, thereby facilitating the miniaturization of the developing cartridge.