Optical Scanning Apparatus Adhesive Support Structure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing optical scanning apparatuses face challenges in securely fastening optical members, such as mirrors, to the housing, leading to potential misalignment and reduced positional accuracy during image formation in electrophotographic devices like copiers and printers.
Innovation Solution
The optical scanning apparatus incorporates an adhesive support portion with elevated and depressed regions on the housing, which prevents adhesive spreading and ensures proper bonding of the optical member, enhancing positional accuracy and image formation by using UV-curable or thermally curable adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is applied to bond the optical member to the housing, then the optical member is securely fastened, but the adhesive may spread and cause misalignment reducing positional accuracy
Solution Approach 1:
The adhesive support portion has different surface characteristics in different regions: elevated portions provide adhesive application areas with higher adhesive presence, while depressed portions provide non-adhesive areas that prevent spreading. This local differentiation of surface properties allows the adhesive to be contained in specific zones, maintaining both strong bonding and precise positioning of the optical member.
2Reliability
If adhesive is applied to secure the optical member, then reliable fastening is achieved, but adhesive spreading may occur affecting image formation quality
Solution Approach 1:
The adhesive support portion is segmented into multiple elevated portions and depressed portions. The elevated portions are separated by depressed portions, creating distinct adhesive application zones. This segmentation prevents adhesive from spreading between zones while ensuring reliable bonding in each elevated portion, thereby maintaining image formation position accuracy.
3Strength
If adhesive is applied between the optical member and housing, then the optical member is firmly attached, but adhesive may spread to unwanted areas
Solution Approach 1:
The depressed portions, which could be seen as wasted adhesive space, are actually designed to actively contain the adhesive within elevated portions. The depressed portions serve as adhesive barriers that convert the potential harm of adhesive spreading into a beneficial containment mechanism, ensuring adhesive remains in designated areas while still providing sufficient bonding strength.
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
This configuration ensures accurate and long-term maintenance of image formation positions, preventing adhesive spreading and facilitating efficient curing, thereby improving the quality and stability of image formation on photosensitive drums.
Implementation Method 1
an adhesive support portion 211 to which the optical member 5 is bonded with adhesive G applied in between
Data Source
AI summary
An optical scanning apparatus includes a light source, a deflector, an optical member, and a housing. The housing has an adhesive support portion to which the optical member is bonded with adhesive applied in between and that supports the optical member. The adhesive support portion has elevated portions and a depressed portion, which are formed at a counterposed face that faces the optical member and to which the adhesive is applied, and which extend in a direction intersecting the main scanning direction. The elevated portions are disposed at opposite end parts of the counterposed face in the main scanning direction. The depressed portion is disposed between the two elevated portions with respect to the main scanning direction.