Light Scanning Device Optical Axis Adjustment Mechanism
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Solution Overview
Problem
Existing light scanning devices require manual removal and adjustment of the light scanning device from the image forming apparatus to correct optical axis inclination, which is labor-intensive and prone to image degradation due to external forces like vibration.
Innovation Solution
A light scanning device with an adjusting unit that includes a shaft portion, shaft supporting portion, turning portion, driving portion, and turning damping unit, allowing bidirectional movement and damping of external forces to adjust the optical axis without manual removal, enabling both manual and automatic optical axis correction within the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual removal and adjustment of the light scanning device is performed to correct optical axis inclination, then the optical axis can be adjusted, but labor intensity increases and the device must be removed from the apparatus
Solution Approach 1:
The patent applies the dynamics principle by making the light scanning device adjustable within the apparatus through a mechanism that allows the optical member to move and rotate. The adjusting unit enables dynamic repositioning of the optical member to correct optical axis inclination without removing the device, transforming a static fixed-position system into a dynamically adjustable one.
Solution Approach 2:
The patent implements self-service by providing an adjusting unit that enables the light scanning device to correct its own optical axis inclination. The mechanism includes a shaft portion, turning portion, and driving portion that allow the device to self-adjust without external intervention or removal from the apparatus, making the system self-maintaining.
2Ease of manufacture
If the light scanning device is left fixed in the apparatus, then installation is simple, but optical axis inclination caused by external forces cannot be corrected
Solution Approach 1:
The patent resolves this contradiction by introducing dynamic adjustability while maintaining simple installation. The light scanning device is installed in the same manner as before, but an adjusting unit is added that allows the optical member to be repositioned if optical axis inclination occurs due to external forces, combining the simplicity of fixed installation with the reliability of adjustable correction.
3Ease of operation
If the light scanning device is removed for adjustment, then optical axis inclination can be corrected manually, but the device becomes vulnerable to external forces during adjustment
Solution Approach 1:
The patent applies self-service by enabling the device to adjust its own optical axis within the apparatus. The adjusting unit allows the optical member to be repositioned without removal, and the turning damping unit automatically counteracts external forces during adjustment, making the device self-correcting and resistant to harmful external influences.
Solution Approach 2:
The patent implements beforehand cushioning by introducing a turning damping unit that counteracts external forces before they can cause harmful inclination of the optical axis. The damping unit absorbs and neutralizes external forces during the adjustment process, preventing them from affecting the optical member's position.
4Stability of the object's composition
If a simple fixed structure is used, then the device is stable, but optical axis inclination cannot be corrected without removal
Solution Approach 1:
The patent resolves this contradiction by adding dynamic adjustment capability to the stable fixed structure. The adjusting unit with the shaft portion, turning portion, and driving mechanism allows the optical member to be repositioned while maintaining the overall structural stability of the apparatus, combining the stability of a fixed structure with the adaptability of adjustable components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates easy and precise adjustment of the optical axis, preventing image degradation from external forces and reducing labor in correcting optical axis inclination, ensuring high-degree freedom in optical axis adjustment without the need to remove the device from the apparatus.
Implementation Method 1
The turning damping unit is configured to damp a turning force. The turning force is applied to the shaft portion by an external force.
Data Source
AI summary
A light scanning includes an adjusting unit that displaces the optical member to adjust the optical axis of the laser beam. The adjusting unit includes a shaft portion, a shaft supporting portion, a turning portion, a driving portion, and a turning damping unit. The shaft portion is configured to bidirectionally move in a first direction and in a second direction while turning. The first direction is a direction where the shaft portion approaches the optical member. The second direction is a direction where the shaft portion moves away from the optical member. The shaft supporting portion supports the shaft portion, and moves the shaft portion in accordance with turning of the shaft portion. The turning portion turns the shaft portion. The driving portion turns the turning portion. The turning damping unit damps a turning force applied to the shaft portion by an external force.