Dual-Pump Air Supply Unit for Selective Toner Conveyance
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Solution Overview
Problem
Existing image forming apparatuses face inefficiencies in conveying toner and air due to the lack of a mechanism that can selectively and efficiently control the direction of air flow to multiple toner cartridges using a single pump unit.
Innovation Solution
A pump unit with dual shaft motors and clutch mechanisms that allow independent control of air flow direction to four toner cartridges by rotating the motors in specific directions, enabling selective operation of pumps based on rotation direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single pump unit is used to convey air to multiple toner cartridges, then device complexity is reduced, but the ability to selectively control air flow direction to different cartridges deteriorates
Solution Approach 1:
The pump unit employs a dual-rotating-direction mechanism where the rotation direction of the drive shaft can be dynamically changed to control air flow direction. By rotating the drive shaft in different directions, air can be selectively conveyed to different toner cartridges, achieving selective control without requiring multiple independent pump units.
Solution Approach 2:
A single pump unit is designed to perform multiple functions by conveying air to different toner cartridges based on rotation direction. The same pump mechanism serves all four toner cartridges, with the ability to selectively supply air to any cartridge by changing the rotation direction, thus achieving multi-functionality with reduced device complexity.
2Adaptability or versatility
If separate pump units are used for each toner cartridge, then selective air conveyance control is improved, but device complexity and space requirements worsen
Solution Approach 1:
Multiple pump functions are merged into a single integrated pump unit. The drive shaft and pumps are combined such that one drive shaft controls multiple pumps, and by changing the rotation direction of the drive shaft, air can be selectively conveyed to different toner cartridges. This merging reduces device complexity while maintaining selective control capability.
3Device complexity
If a single pump unit conveys air to all toner cartridges simultaneously, then device complexity is reduced, but the precision of toner distribution control worsens
Solution Approach 1:
The system uses dynamic rotation direction control to achieve precise toner distribution. By rotating the drive shaft in specific directions, air is conveyed to specific toner cartridges, enabling precise control over which cartridge receives air and toner. This dynamic control ensures that only the intended cartridge is affected, maintaining high precision in toner distribution.
Data Source
AI summary
A pump unit includes a motor including a rotation shaft configured to rotate about a rotational axis, a first pump and a second pump, a first drive transmission portion configured to be transitioned between a first transmission state and a first non-transmission state, and a second drive transmission portion configured to be transitioned between a second transmission state and a second non-transmission state. The first drive transmission portion is configured to drive the first pump by being transitioned to the first transmission state, and configured not to drive the first pump by being transitioned to the first non-transmission state. The second drive transmission portion is configured not to drive the second pump by being transitioned to the second non-transmission state, and configured to drive the second pump by being transitioned to the second transmission state.