Developing Cartridge Component Layout for a Smaller Image-Forming Apparatus
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Solution Overview
Problem
Conventional developing cartridges and image forming apparatuses are large due to the positioning of components such as couplings, detection gears, and IC chips on the first side surface, leading to complex structures and increased size.
Innovation Solution
The developing cartridge is designed with the coupling, detection gear, and IC chip positioned on opposite sides of the casing, allowing for a more compact layout that reduces the overall size of both the cartridge and the image forming apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the coupling, detection gear and IC chip are positioned at the first side surface of the casing, then all components can be arranged on one surface for easier connection, but the first side surface becomes larger and the developing cartridge size increases
Solution Approach 1:
The patent divides the component arrangement into two separate surfaces: the first side surface contains the coupling and detection gear, while the second side surface contains the IC chip. This segmentation allows each surface to have a smaller area, reducing the overall cartridge size while maintaining all necessary connection points.
Solution Approach 2:
The patent transitions from arranging all components on a single two-dimensional surface to utilizing three-dimensional space by distributing components across two opposite surfaces of the casing. This dimensional approach reduces the area required on each surface while preserving all functional connections.
2Device complexity
If multiple components are positioned at the first side surface, then connection is simplified, but the configuration becomes complex and the image forming apparatus size increases
Solution Approach 1:
The patent segments the component layout into two distinct groups on opposite surfaces, which simplifies the internal configuration within each surface while reducing the overall apparatus footprint by eliminating the need for a large single surface to accommodate all components.
Data Source
AI summary
A developing cartridge may include: a casing configured to accommodate developer therein, the casing extending in the first direction; a coupling rotatable about a first axis extending in the first direction, the coupling being positioned at one side of the casing in the first direction; a detection gear rotatable about a second axis extending in the first direction, the detection gear being positioned at another side of the casing in the first direction; and a storage medium including an electric contact surface, the electric contact surface being positioned at the one side of the casing in the first direction.