Process Cartridge Variable Angle Installation Guide
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Solution Overview
Problem
Conventional process cartridges for imaging devices are difficult to install due to the requirement for precise alignment of the photosensitive drum's rotation axis with the drive head's rotation axis, which can be perpendicular or parallel, making the installation process cumbersome and prone to misalignment.
Innovation Solution
The process cartridge incorporates installation guiding parts and inclined walls on end plates that guide the cartridge's installation by forming a variable included angle with the drive head's rotation axis, allowing for engagement without requiring the drive coupler to incline or move axially, simplifying the installation process and ensuring stable force transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the photosensitive drum's rotation axis is aligned parallel or perpendicular to the drive head's rotation axis, then the engagement between drive coupler and drive head is achieved, but the installation process becomes complex and prone to misalignment
Solution Approach 1:
The patent introduces a guide rail structure that provides a third dimension (vertical guidance) to the traditional two-dimensional alignment problem. The guide rail receives the installation guiding part and enables the photosensitive drum's rotation axis to be inclined at a variable angle relative to the drive head's rotation axis during installation, transforming the alignment process from a constrained 2D problem to a 3D solution space.
Solution Approach 2:
The patent changes the angular parameter between the photosensitive drum's rotation axis and the drive head's rotation axis from fixed values (0° parallel or 90° perpendicular) to a variable inclined angle. This parameter change is achieved through the guide rail and installation guiding part mechanism, allowing flexible angular adjustment during installation while maintaining stable force transmission.
2Reliability
If the drive coupler is designed to engage with the drive head, then force transmission is achieved, but the drive coupler requires axial movement or inclining capability that complicates the structure
Solution Approach 1:
The guide rail introduces a vertical dimension to the engagement mechanism. Instead of requiring the drive coupler to move axially or incline within the horizontal plane, the guide rail provides vertical guidance that enables angular adjustment of the photosensitive drum's rotation axis, thereby achieving reliable force transmission without complicating the drive coupler's structure.
Solution Approach 2:
The guide rail acts as an intermediary component between the installation guiding part and the drive head. It mediates the engagement process by providing a constrained path for the installation guiding part, enabling smooth angular adjustment and stable force transmission without requiring the drive coupler itself to have complex movement capabilities.
3Ease of repair
If the process cartridge is designed for detachable installation, then maintenance facilitation is achieved, but precise alignment during installation becomes more difficult
Solution Approach 1:
The guide rail and installation guiding part mechanism adds a vertical dimension to the installation process, enabling the detachable process cartridge to be installed with a variable inclined angle. This 3D installation path simplifies the alignment task while maintaining the benefits of detachable design for maintenance purposes.
Solution Approach 2:
The installation guiding part is pre-configured on the photosensitive drum with a specific structure designed to engage with the guide rail. This preliminary configuration ensures that when the process cartridge is installed, the alignment is automatically guided by the pre-designed interaction between the installation guiding part and guide rail, reducing the complexity of alignment operations.
Data Source
Figure 1~2a
Figure 2b~3a
Figure 3b~4
AI summary
A process cartridge configured to be detachably installed onto a main body of the imaging device includes a housing, and a photosensitive drum arranged in the housing. A drive coupler configured to receive a driving force from a drive head of the main body of the imaging device is provided at an end of the photosensitive drum. The process cartridge can be installed onto the main body of the imaging device or be detached from the main body of the imaging device in a manner that the photosensitive drum rotation axis forms a variable included angle with respect to the drive head rotation axis. Since the process cartridge can be installed and detached in the manner that the photosensitive drum rotation axis forms a variable included angle with respect to the drive head rotation axis, the installation of the process cartridge is facilitated, and the engagement of the drive coupler with the drive head of the imaging device is facilitated.