Imaging System Control Member for Airflow Regulation
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Solution Overview
Problem
The existing toner development devices face issues with increased atmospheric pressure and toner scattering due to unregulated air flow, leading to contamination and inefficient developer management.
Innovation Solution
Incorporating a control member, such as a cover member or elastic sheet member, positioned along the conveyance route to regulate air flow and reduce internal pressure, combined with a bypass flow path to manage air circulation and prevent toner scattering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air flow is unregulated in the developing device, then air circulation is maintained, but atmospheric pressure increases and causes toner scattering
Solution Approach 1:
The conveyance route is divided into multiple sections by positioning the control member at a specific location, allowing differential pressure control in different zones. The inflow port and ejection port are segmented to create distinct pressure zones that prevent toner scattering while maintaining air circulation.
Solution Approach 2:
The control member acts as an intermediary element that mediates between air intake and pressure control functions. It is positioned to intercept and regulate air flow, creating a pressure differential that prevents toner scattering without completely blocking air circulation.
2Reliability
If a control member is added to regulate air flow, then toner scattering is suppressed, but device complexity increases
Solution Approach 1:
The control member is designed to perform multiple functions simultaneously: it regulates air flow, controls pressure differential, and prevents toner scattering. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving the desired reliability improvement.
Solution Approach 2:
The control member is positioned to automatically regulate air flow based on the pressure differential created by the developing roller's rotation. The system self-adjusts without requiring external control mechanisms, reducing complexity while maintaining effective toner scattering suppression.
3Productivity
If air intake is increased to maintain circulation, then air flow is improved, but internal pressure increases causing harmful effects
Solution Approach 1:
The control member is positioned at a specific location in the conveyance route where it can locally regulate air flow to create a favorable pressure differential. This localized control allows improved air circulation in certain zones while preventing pressure buildup that would cause toner scattering in other zones.
Solution Approach 2:
The control member is positioned upstream in the conveyance route to preemptively regulate air flow before pressure can build up to harmful levels. By controlling air intake at this preliminary stage, the system prevents toner scattering before it can occur, while still allowing sufficient circulation for productivity.
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 effectively suppresses air intake, maintains optimal internal pressure, and reduces toner scattering, enhancing the reliability and efficiency of the toner development process.
Implementation Method 1
an elastic sheet member having another end pressed against the development sleeve
Implementation Method 2
a magnetic body having another end pressed against the development sleeve
Implementation Method 3
an increase in an atmospheric pressure in the developing device main body is suppressed
Data Source
AI summary
An imaging system includes: a housing including a developing chamber, a developing roller located in the developing chamber to transport a developer and spaced apart from the housing; a conveyance path extending along at least part of a periphery of the developing roller in order to form a flow of air including the developer; and a control member. The developing roller includes a peeling pole at a fixed position with respect to the housing, to discharge the developer. The control member is located along the conveyance path in proximity to the peeling pole of the developing roller, to reduce a flow rate of the air flowing through the conveyance path.