Mirror Positioning Structure for Skew and Bow Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional laser scanning units face challenges in accurately compensating for skew and bow due to assembly tolerances and aberrations, leading to decreased printing precision and quality, particularly in tandem type laser printers where color reproducibility is affected.
Innovation Solution
A mirror positioning structure that includes a mirror rotating member with a recess and a rotation shaft, coupled with a mirror position changing member and a fixing member, allowing for independent adjustment of the mirror's rotation angle and rectilinear motion to compensate for skew and bow, ensuring precise alignment and fixation within the laser scanning unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional mirror adjustment structure is used, then the structure is simple, but the mirror position and angle cannot be independently adjusted, resulting in inadequate compensation for skew and bow
Solution Approach 1:
The mirror positioning structure is divided into independent components: a mirror holder for angle adjustment, a mirror position changer for position adjustment, and a mirror fixing member. This segmentation allows independent adjustment of mirror angle and position, enabling precise compensation for both skew and bow distortions without excessive overall complexity.
Solution Approach 2:
The mirror positioning structure transitions from a fixed configuration to a dynamically adjustable one. The mirror holder can rotate to change the mirror angle, the mirror position changer can move the mirror holder to adjust position, and these adjustments can be made during assembly or operation to optimize compensation for skew and bow.
2Measurement precision
If the mirror is fixed at a single position, then the structure is simple, but skew and bow cannot be effectively compensated, decreasing printing precision
Solution Approach 1:
The positioning system is segmented into independent angle adjustment (mirror holder rotation) and position adjustment (mirror position changer translation) mechanisms. This allows precise control of both mirror orientation and location, enabling compensation for skew and bow while maintaining manageable structural complexity through modular design.
Solution Approach 2:
The mirror holder acts as an intermediary component between the fixed frame and the mirror. It provides the rotation function for angle adjustment while being mounted on the mirror position changer, which provides translation for position adjustment. This intermediary structure enables independent control of angle and position without requiring a completely complex reconfiguration.
3Manufacturing precision
If only mirror rotation angle is adjusted, then the adjustment mechanism is simple, but both skew and bow cannot be simultaneously compensated
Solution Approach 1:
The adjustment function is segmented into two independent operations: rotating the mirror holder to adjust the mirror angle, and moving the mirror position changer to adjust the mirror position. This segmentation allows operators to independently control angle and position adjustments, making it easier to simultaneously compensate for both skew and bow without excessive operational complexity.
Solution Approach 2:
The system transitions from static single-parameter adjustment to dynamic multi-parameter adjustment. The mirror holder rotation provides dynamic angle control, while the mirror position changer provides dynamic position control. These dynamic adjustments can be made independently and in combination to optimize compensation for both skew and bow distortions.
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
The solution effectively compensates for skew and bow, enhancing the quality of color printing by allowing for precise adjustment and fixation of the mirror's position and angle, thereby improving the alignment of the laser beam and reducing printing distortions.
Implementation Method 1
the mirror 17 serves to compensate for skew and bow by appropriately adjusting an incident angle of the light beam
Implementation Method 2
A mirror position changing member has an opening through which the rotation shaft of the mirror rotating member passes so that the mirror rotating member is rotatably coupled with the mirror position changing member
Data Source
AI summary
A mirror positioning structure for compensating skew and bow includes a mirror rotating member having a recess at one side to hold a mirror inserted therein and a rotation shaft protruding from an opposite side. A mirror position changing member has an opening through which the rotation shaft of the mirror rotating member passes such that the mirror rotating member is rotatably coupled with the mirror position changing member. A fixing member has a receiving space in one side so that the mirror position changing member moves rectilinearly within the receiving space.