Toner Refillable Image Forming Apparatus
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Solution Overview
Problem
Conventional image forming apparatuses require frequent replacement of process cartridges, which is costly and inefficient, as they need to replace entire units including rollers and gears, even when only the toner runs out, leading to unnecessary expenses and waste.
Innovation Solution
An image forming apparatus with a detachable toner supply container system that allows for direct toner refilling, eliminating the need to replace the entire process cartridge, reducing costs and improving usability by allowing users to refill toner independently without replacing the entire cartridge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the process cartridge method is used, then the image forming apparatus can maintain reliable image quality through integrated components, but the operational cost increases due to frequent replacement of entire cartridges even when only toner is depleted
Solution Approach 1:
The invention divides the process cartridge into separable components: a reusable process cartridge body containing the photosensitive drum, developing container, and transfer roller, and a replaceable toner cartridge. This segmentation allows users to refill only the toner when depleted, rather than replacing the entire integrated cartridge, thereby reducing operational costs while maintaining image quality through the reusable high-quality components.
Solution Approach 2:
The invention enables recovery and reuse of valuable components (photosensitive drum, developing container, transfer roller) by separating them from the consumable toner. The reusable process cartridge body can be refilled multiple times with new toner, recovering the investment in quality components and eliminating the need to discard functional parts when toner is depleted.
2Reliability
If the process cartridge method is used, then the apparatus maintains stable performance through integrated design, but user convenience deteriorates due to the need to replace entire cartridges
Solution Approach 1:
The process cartridge is segmented into a reusable body and a refillable toner container. The toner container features a user-friendly refill mechanism with a simple opening/closing system, allowing users to refill toner without tools or complex procedures. This segmentation maintains the stable performance of the integrated process cartridge while dramatically improving user convenience through easy refilling.
Solution Approach 2:
The invention enables users to perform their own toner refilling operation independently without requiring professional service or replacement of entire cartridges. The refill mechanism is designed for user operation, allowing individuals to maintain their own image forming apparatus, thereby improving ease of operation and reducing dependency on service personnel.
3Loss of substance
If the toner supply box method is used, then operational cost is reduced through reusable process cartridges, but device complexity increases due to additional toner conveyance mechanisms
Solution Approach 1:
The invention extracts the toner storage and supply function into a separate, self-contained toner cartridge that attaches to the process cartridge body. This extracted design eliminates the need for complex internal conveyance mechanisms, screws, or automated transfer systems. The toner is supplied directly from the cartridge to the developing container through a simple interface, reducing device complexity while maintaining the operational cost benefits of reusable process cartridges.
Data Source
AI summary
An image forming apparatus includes an attachment portion to which to attach a supply container for supplying a developer, a housing including a discharge portion for discharging a sheet in a discharging direction, a discharge tray including a first stack portion for stacking the sheet thereon, in which the first stack portion is configured to be movable between a closed position and an opened position, a top portion fixed to the housing, and a display portion and an operation portion arranged on the top portion. The top portion includes a first region, a first extension portion, and a second extension portion. As viewed along a vertical direction, the first extension portion and the second extension portion extend from the first region in the discharging direction, and at least a part of the first stack portion is located between the first extension portion and the second extension portion.