Dual-Speed Developer Transport for Continuous Toner Supply
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing developer supply systems in image forming apparatuses face challenges in efficiently transporting and managing toner developers, particularly in high-speed operations, where continuous printing requires uninterrupted toner supply without stopping the apparatus.
Innovation Solution
A developer supply device with a container body containing a toner cartridge, featuring a first transport member and a second transport member with different rotation speeds, and a sensing member to detect developer levels, ensuring continuous supply and allowing for toner cartridge replacement during operational states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single transport member is used to transport developer, then the device structure is simple, but the productivity is insufficient for high-speed continuous printing
Solution Approach 1:
The developer transport function is segmented into multiple independent transport members (first transport member and second transport member) that operate in parallel. Each transport member has its own drive mechanism and can transport developer at different speeds, enabling high-speed continuous printing while maintaining manageable individual component complexity
Solution Approach 2:
The transport members are designed with variable speed capabilities, allowing the first and second transport members to rotate at different speeds dynamically. This enables flexible adjustment of developer supply rates to match varying printing speed requirements, achieving high productivity without rigid mechanical constraints
2Productivity
If the apparatus stops to replace toner cartridge, then the developer supply can be replenished, but the productivity decreases due to interruption
Solution Approach 1:
The system performs preliminary actions by maintaining a reserve of developer in the container body and using the dual transport member system to pre-position and supply developer continuously. This allows the toner cartridge to be replaced without interrupting the developer supply to the developing device, as the reserve supply bridges the replacement period
Solution Approach 2:
The first and second transport members operate continuously to transport developer from the container body to the developing device throughout the toner replacement process. This continuous useful action ensures that developer supply never interrupts the printing process, maintaining productivity while enabling easy toner replacement operations
3Productivity
If developer is transported at high speed, then the productivity increases, but the developer distribution uniformity deteriorates
Solution Approach 1:
The developer supply is segmented into multiple streams from the first and second transport members, each contributing to the overall developer supply. This segmentation allows high-speed transport while distributing developer more uniformly across the developing device, as multiple transport paths prevent concentration in a single location
Solution Approach 2:
The system changes the speed parameter of the transport members, allowing them to operate at optimized speeds that balance high productivity with uniform developer distribution. The ability to adjust and optimize transport speed parameters ensures both high supply rate and consistent developer quality
Data Source
AI summary
A developer supply device includes a container body that receives and contains a developer with which a toner cartridge is filled and that has a supply port used for supplying the developer, which is contained in the container body, to a developing device, a sensing member that detects the developer contained in the container body, a first transport member that is rotatably disposed in the container body and that transports the developer at a first transport speed by rotating, and a second transport member that is rotatably disposed in the container body in such a manner as to face the sensing member and that transports the developer at a second transport speed that is higher than the first transport speed by rotating.