Developing Cartridge Layout for Compact Gear and IC Placement
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Solution Overview
Problem
Conventional developing cartridges have a large size due to the positioning of components such as the coupling, detection gear, and IC chip on one side of the casing, leading to complex structures in both the cartridge and the image forming apparatus.
Innovation Solution
The coupling, detection gear, and IC chip are efficiently arranged on opposite sides of the developing cartridge casing, with the coupling and IC chip on one side and the detection gear on the other, allowing for a more compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the coupling, detection gear and IC chip are positioned at one side surface of the casing, then all components can be arranged on a single surface, but the first side surface becomes larger and the developing cartridge size increases
Solution Approach 1:
The patent transitions from arranging all components on a single side surface (2D arrangement) to distributing components across opposite side surfaces (utilizing 3D space). Specifically, the coupling and IC chip are positioned at one side surface while the detection gear is positioned at the opposite side surface, effectively using the depth dimension of the cartridge to reduce the footprint of individual surfaces.
2Device complexity
If the coupling, detection gear and IC chip are positioned at one side surface of the casing, then component integration is simplified, but the image forming apparatus requires complex inner surface configurations and has larger size
Solution Approach 1:
The patent distributes components across opposite side surfaces of the casing, utilizing the depth dimension to separate the coupling/IC chip from the detection gear. This spatial distribution simplifies the interface requirements with the image forming apparatus, as each side surface requires fewer corresponding structural elements, thereby reducing the overall apparatus size and complexity.
Data Source
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AI summary
A developing cartridge (1) comprising: a casing (10) configured to accommodate developer therein, the casing (10) extending in the first direction; a coupling (41) rotatable about a first axis (83) extending in the first direction, the coupling (41) being positioned at one side of the casing (10) in the first direction; a detection gear (52) rotatable about a second axis (85) extending in the first direction, the detection gear (52) being positioned at another side of the casing (10) in the first direction; a storage medium (61) including an electric contact surface (611), the electric contact surface (611) being positioned at the one side of the casing (10) in the first direction.