Rotary Development Image Forming for Easy Toner Replacement
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Solution Overview
Problem
Existing image forming apparatuses with rotary development methods face challenges in efficiently and conveniently replacing toner cartridges, leading to operational inefficiencies and user inconvenience.
Innovation Solution
A rotary development system with a rotatable rotary body and sliding trays allows for easy attachment and detachment of toner cartridges through a side opening, enabling seamless replacement and improved operability by rotating between developing and replacement postures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rotary development method with multiple developing members is used, then color image forming capability is improved, but toner cartridge replacement becomes complex and inconvenient
Solution Approach 1:
The image forming apparatus is divided into multiple independent developing units, each with its own toner cartridge. This segmentation allows each cartridge to be replaced independently without affecting other color cartridges, simplifying the replacement process while maintaining multi-color capability
Solution Approach 2:
The toner cartridges are arranged radially around the rotary body in a circular pattern, utilizing radial space instead of linear arrangement. This dimensional change enables easy access to any cartridge by rotating the rotary body to the appropriate position, making replacement convenient despite having multiple cartridges
2Area of stationary object
If multiple toner cartridges are integrated into a rotary body, then compact design is achieved, but access for replacement becomes difficult
Solution Approach 1:
The rotary body is designed to rotate, transforming the static compact arrangement into a dynamic system. By rotating the rotary body to different angular positions, any toner cartridge can be brought to an accessible location for quick replacement, maintaining compactness while improving operability
3Device complexity
If a fixed developing position is used, then structural simplicity is maintained, but operational flexibility during toner replacement is reduced
Solution Approach 1:
The rotary body can rotate to different positions, allowing the system to adapt between a developing position and a replacement position. This dynamic capability provides operational flexibility without significantly increasing structural complexity, as the rotation mechanism is integrated into the existing rotary development system
Data Source
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AI summary
An image forming apparatus (1) includes a photosensitive drum (2), an exposure device (4), a rotary (90) including a developing roller (51), and an accommodating frame (53) including an accommodating portion (53a), and a toner cartridge (70), the toner cartridge (70) being detachably attached to the rotary (90). The exposure device (4) includes a casing (4a) and a passage portion (42) through which light emitted toward the photosensitive drum (2) passes. The toner cartridge (70) includes a toner discharge port through which the toner supplied to the accommodating portion (53a) of the rotary (90) passes. A direction from a first side toward a second side in a rotation axis direction (Y) of the rotary (90) is defined as a predetermined direction (Y). A downstream end (71Rb3) of the toner discharge port (71Rb) is positioned downstream of a downstream end (42Ra) of the passage portion (42) in the predetermined direction (Y).