Swing Plate Mechanism for Developing Cartridge Alignment
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Solution Overview
Problem
Existing image forming apparatuses face challenges in maintaining the optimal positional relationship between the developing roller and the photosensitive drum, which affects the relative movement and toner transfer efficiency.
Innovation Solution
The image forming apparatus incorporates a swing plate with a guide mechanism that allows the developing roller to move relative to the photosensitive drum, ensuring proper alignment and contact through adjustable positions, enabling smooth installation and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the developing cartridge is made easily installable and removable, then the ease of operation is improved, but the positional precision between the developing roller and photosensitive drum deteriorates
Solution Approach 1:
The swing plate is designed to move dynamically between a first position (during installation) and a second position (during operation). When the developing cartridge is being installed, the swing plate is at the first position allowing easy access through the opening. After installation, the swing plate swings to the second position to secure the developing cartridge and establish precise positioning between the developing roller and photosensitive drum.
Solution Approach 2:
The guide structure is pre-configured on the swing plate to automatically guide the developing cartridge into the correct position during installation. The guide includes positioning protrusions and grooves that preliminarily align the developing cartridge before the swing plate moves to its second position, ensuring precise positioning is achieved automatically as part of the installation process.
2Productivity
If the developing roller is pressed against the photosensitive drum, then the toner transfer efficiency is improved, but the ease of removing the developing cartridge deteriorates
Solution Approach 1:
The swing plate provides dynamic positioning: during operation, it maintains the developing roller in contact with the photosensitive drum for efficient toner transfer; during removal, it swings to the first position where the developing cartridge can be easily accessed and removed through the opening without resistance from pressing forces.
Data Source
AI summary
An image forming apparatus includes an apparatus main body, a drum cartridge, and a developing cartridge. The apparatus main body is formed with an opening. The drum cartridge includes a photosensitive drum and is configured to be installed into the apparatus main body through the opening. The developing cartridge includes a developing roller and is configured to be installed into the drum cartridge. The drum cartridge includes a swing plate configured to support the developing cartridge installed in the drum cartridge. The swing plate is configured to swingably move such that the developing roller moves relative to the photosensitive drum. The swing plate includes a first guide configured to guide installation of the developing cartridge into the drum cartridge.