Sheet Conveying Device Uniform Pressure Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional sheet-conveying devices in image forming apparatuses experience imbalance in clamping and conveying forces due to variations in pressing means, leading to sheet skewing, jamming, and image displacement issues.
Innovation Solution
A sheet-conveying device with a fixing roller member and a load roller, utilizing a pair of pressure units and an elastic member to apply uniform load between them, ensuring equal pressure distribution and force application across the rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If separate pressing means are used for the left and right shafts of the driven roller, then the driven roller can be pressurized to the conveying roller, but the pressure becomes unbalanced due to variations in the pressing means, causing sheet skewing and conveying defects
Solution Approach 1:
The patent merges the separate pressing means for the left and right shafts into a single integrated pressing mechanism. This single pressing means applies force to both shafts simultaneously through a common structure, ensuring that the pressing force is balanced and uniform across both sides of the driven roller, thereby eliminating sheet skewing and conveying defects caused by pressure imbalance.
2Force
If separate pressing means are used for the left and right shafts, then pressing can be applied, but variations in the pressing means cause unbalanced clamping and conveying forces
Solution Approach 1:
The patent combines the pressing mechanisms into a single integrated structure that simultaneously applies force to both left and right shafts. This unified pressing means ensures that the clamping force is evenly distributed and balanced across both sides of the driven roller, maintaining stable and uniform conveying forces throughout the operation.
3Speed
If unbalanced pressing is applied, then the driven roller can rotate, but sheet skewing and conveying defects such as jamming and bending occur
Solution Approach 1:
The patent implements a single integrated pressing means that ensures balanced pressure distribution across both shafts of the driven roller. This balance prevents sheet skewing, jamming, and bending during conveying, thereby maintaining high conveying stability and reliability while ensuring smooth rotation and consistent conveying speed.
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 solution prevents sheet skewing and jamming, reduces dependence on repositioning by aligning rollers, and maintains high image quality by ensuring consistent clamping and conveying forces.
Implementation Method 1
a elastic member bridged between said pair of pressure units to elastic uniformly said pair of pressure units
Data Source
AI summary
A spring is bridged between a pair of press levers, and a pair of driven rollers is pressurized uniformly, so that clamping and conveying force of the sheet of paper P on the front side and rear side by conveying rollers and the driven rollers is made equal such as Pf=Pr, the sheet of paper P are prevented from being skewed, while the sheet of paper P are clamped and conveyed by a conveying device, and the good conveying of the sheet of paper P is improved, thus the image quality is improved.