Longitudinal Regulating Component for Photosensitive Drum Driving
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Solution Overview
Problem
Conventional process cartridges for electrophotographic image forming apparatuses face issues with rotational non-uniformity and instability in the driving mechanism, particularly during mounting and demounting, which affects the reliability and performance of the photosensitive drum.
Innovation Solution
A driving component with a gear and longitudinal regulating component, featuring a rotational driving force receiver, regulating slider, and spring support, allows for reciprocal and translational movement along the gear's longitudinal direction, ensuring consistent alignment and stable engagement with the printer's driving shaft, reducing rotational non-uniformity and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional driving mechanism with a rotatable member and non-circular twisted hole is used, then the photosensitive drum can be rotated, but the mechanism requires horizontal movement of the rotatable member during mounting and demounting, increasing device complexity
Solution Approach 1:
The patent applies the dynamics principle by enabling the longitudinal regulating component to move reciprocally along the gear's longitudinal direction. This dynamic adjustment allows the driving component to automatically align with the driving shaft during mounting without requiring horizontal movement of the rotatable member, thereby reducing mounting mechanism complexity while maintaining driving stability
Solution Approach 2:
The longitudinal regulating component serves as an intermediary element between the gear and the rotational driving force receiver. It mediates the connection by providing reciprocal movement capability, which facilitates automatic alignment during mounting while ensuring stable torque transmission during operation, thus resolving the contradiction between reliability and complexity
2Reliability
If a gear-based driving mechanism is used, then rotational force can be transmitted, but rotational non-uniformity occurs affecting photosensitive drum performance
Solution Approach 1:
The longitudinal regulating component provides dynamic adjustment capability that compensates for manufacturing tolerances and alignment variations. By allowing reciprocal movement, it ensures continuous contact between the driving component and driving shaft, eliminating gaps that cause rotational non-uniformity and improving rotational consistency
Solution Approach 2:
The patent changes the positional parameter of the longitudinal regulating component along the gear's longitudinal direction. This parameter change enables the system to adapt to variations in mounting position and maintain optimal engagement, thereby improving rotational uniformity without requiring extremely tight manufacturing tolerances
3Ease of operation
If the driving component is easily disengaged during transportation, then mounting and demounting becomes simple, but the driving mechanism loses function and works unstably
Solution Approach 1:
The reciprocal movement capability of the longitudinal regulating component creates a self-aligning mechanism that naturally engages during mounting without requiring complex horizontal movement operations. During transportation, the same dynamic mechanism maintains continuous contact, preventing disengagement while keeping the mounting process simple
Solution Approach 2:
The driving component employs a self-aligning mechanism where the longitudinal regulating component automatically positions itself during mounting through reciprocal movement. This self-service capability eliminates the need for complex external alignment mechanisms, maintaining ease of operation while ensuring stable engagement during transportation
Data Source
AI summary
The present invention provides a driving component, and a photosensitive drum and a process cartridge comprising the driving component. The driving component comprises a gear fixed at one end of the photosensitive drum and a longitudinal regulating component. The longitudinal regulating component comprises a first motion subassembly, a groove part and a central shaft part. The groove part has an upper chute and a lower chute which are orthogonal in space. The first motion subassembly forms relative slide coordination with the upper chute along a first direction. The central shaft part has a common axis with the gear which forms relative slide coordination with the lower chute along a second direction. The first direction and the second direction are all perpendicular to the longitudinal direction of the photosensitive drum.