Release Sheet With Oblong Opening For Tolerance Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing release sheets for removing recording members from fixing belts face challenges due to component tolerance issues, leading to inaccurate positioning and reduced release performance, which can result in image defects and increased component tolerance, making it difficult to achieve precise alignment and effective release.
Innovation Solution
The release sheet design includes a support member with a positioning portion and a release member with oblong openings to adjust the distance between the front end and positioning portions, allowing for precise alignment and reduced component tolerance, enabling improved release performance by using a jig with specific shaft and abutment configurations to ensure accurate positioning and fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the release member and support member are positioned by inserting shafts to holes in a jig, then the assembly process is simplified, but the positioning accuracy deteriorates due to component tolerance of hole diameters and distances
Solution Approach 1:
The invention converts the static positioning holes into a dynamic adjustment mechanism. The oblong opening allows the release member to be positioned at multiple locations along the longitudinal direction, enabling adjustment to compensate for component tolerances. This transforms the rigid fixed-positioning system into a flexible adjustable system that can adapt to manufacturing variations.
Solution Approach 2:
The invention changes the geometric parameter of the opening from circular to oblong shape. This parameter change enables the opening to accommodate shafts while allowing positional adjustment along the longitudinal axis. The oblong shape provides a range of valid positions that can absorb manufacturing tolerances while still achieving accurate final positioning.
2Device complexity
If the distance between the front end portion and positioning portion is fixed, then the structure is simple, but the release performance deteriorates due to large component tolerance
Solution Approach 1:
The fixed distance structure is replaced with an adjustable distance mechanism through the oblong opening. This allows the distance between the front end portion and positioning portion to be optimized for release performance while maintaining structural simplicity. The adjustment capability compensates for tolerance accumulation that would otherwise degrade release performance.
Solution Approach 2:
The invention performs preliminary positioning adjustment through the oblong opening before final assembly. By allowing positional adjustment during assembly, the system can pre-compensate for tolerance variations, ensuring optimal release performance is achieved before the component is permanently installed.
3Ease of operation
If the release sheet is positioned far from the fixing belt, then positioning is easier, but the release function deteriorates due to insufficient proximity to the fixing belt surface
Solution Approach 1:
The invention provides dynamic positioning capability through the oblong opening, allowing the release sheet to be adjusted to the optimal distance from the fixing belt. This enables the system to achieve both ease of positioning (through adjustment range) and effective release function (through optimized proximity), resolving the contradiction between positioning ease and release effectiveness.
Data Source
AI summary
A release sheet includes a support member including a positioning portion formed on a part, in a first direction along a longitudinal direction of the fixing belt, of the support member and configured to position the support member to a holding portion, that holds the fixing belt, in a second direction orthogonal to the first direction, and a release member fixed with the support member and including a front end portion that faces a surface of the fixing belt through a gap. One member among the support member and the release member includes an opening which is oblong in the second direction more than the first direction in order to adjust a distance between the front end portion and the positioning portion in the second direction.