Cartridge Detection via Signal Triggering Assembly
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Solution Overview
Problem
Existing image forming apparatuses face issues with out-of-place cartridge installation and incorrect color cartridge order, leading to development degradation and poor image quality.
Innovation Solution
A signal triggering assembly, adapter, cartridge, cartridge assembly, and detection method are introduced to ensure correct cartridge installation by using an electric signal triggering assembly that connects with a conductive unit and responds with a predetermined signal when the cartridge is properly installed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cartridges of multiple colors are set to a same structure in a standardized processing manner, then manufacturing cost is reduced, but installation order becomes confused leading to development degradation
Solution Approach 1:
The patent applies color changes by providing different color marks on cartridges of different colors (e.g., yellow mark on yellow cartridge, magenta mark on magenta cartridge). This allows users to quickly identify and install cartridges in the correct order without confusion, while the cartridges themselves maintain a standardized structure for cost-effective manufacturing. The color marks serve as visual indicators that resolve the installation order problem without requiring different cartridge structures.
Solution Approach 2:
The patent introduces color marks as an intermediary element between the cartridge and the user. These marks act as mediators that convey information about the correct installation position without changing the fundamental cartridge structure. The color marks bridge the gap between standardized cartridge design and the need for color-specific identification, allowing users to correctly install cartridges while maintaining manufacturing efficiency.
2Adaptability or versatility
If the imaging assembly is made longer to accommodate more components, then functionality is improved, but cartridge installation becomes improper leading to image quality degradation
Solution Approach 1:
The patent applies asymmetry by providing asymmetric positioning structures such as guide rails and positioning grooves that are specifically designed to guide cartridges into the correct installation position. The guide rails have asymmetric cross-sections or shapes that only fit in one orientation, preventing improper installation even when the imaging assembly is long and complex. This asymmetric design ensures that cartridges can only be installed in the correct orientation, resolving the installation precision problem while maintaining the extended functionality of the imaging assembly.
3Productivity
If cartridges are installed without verification, then installation speed is improved, but development degradation occurs due to incorrect installation
Solution Approach 1:
The patent applies preliminary action by providing pre-installed color marks and positioning structures on cartridges before installation. These features are prepared in advance to guide users during installation, eliminating the need for verification steps. The color marks and asymmetric positioning structures are built into the cartridge design beforehand, allowing users to quickly and correctly install cartridges without needing to verify the installation process, thus maintaining both high installation speed and reliability.
Data Source
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AI summary
An electric signal triggering assembly (152) is installed on an assembly unit (151) of a cartridge (150). The cartridge is detachably arranged on a main body (10, 110) of an image forming apparatus (100). The image forming apparatus has an accommodation cavity (112), a conductive unit (113), a matching unit (114), and an electric signal responding unit (115). The assembly unit is configured to match with the matching unit, making the cartridge to be installed to a predetermined position in the accommodation cavity. The electric signal triggering assembly is configured to electrically connect with the conductive unit and trigger the electric signal responding unit to obtain a predetermined responding signal, when the electric signal triggering assembly is installed on the assembly unit of the cartridge and the cartridge is installed to the predetermined position in the accommodation cavity. The predetermined responding signal is configured to determine whether an installation of the cartridge meets an expectation.