Variable Contact Angle Medium Feed Device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing medium feed devices struggle to accurately feed multiple types of paper with varying stiffness due to issues like paper-slide and misalignment, limiting the types of media that can be fed effectively.
Innovation Solution
A medium feed device with a variable contact angle mechanism, utilizing a rotatable auxiliary roller and interchangeable medium support sections, allows for adjustable inclination and contact angles to accommodate different paper types, ensuring smooth feeding of both high and low stiffness papers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the angle of the medium placement section is made steep, then paper-slide is prevented for low stiffness paper, but the leading edges of high stiffness paper are not lined up
Solution Approach 1:
The medium placement section is designed to be rotatable about a rotation axis, allowing the inclination angle to be dynamically adjusted. The angle adjustment mechanism enables the placement section to rotate to a predetermined angle, changing from a fixed structure to a dynamic one that can adapt to different paper types and stiffness characteristics
Solution Approach 2:
The invention changes the parameter of inclination angle of the medium placement section. By adjusting this parameter through the rotation mechanism, the system can optimize the contact angle between the paper and separator unit for different paper types, thereby resolving the contradiction between preventing paper-slide and ensuring alignment
2Force
If the contact angle between medium and separator unit is made large, then resistance to paper feeding is reduced for high stiffness paper, but separation efficiency decreases for low stiffness paper
Solution Approach 1:
The auxiliary roller is designed to be movable relative to the medium placement section, allowing the contact angle to be dynamically adjusted. The roller can move along the placement section to change the angle at which the medium contacts the separator unit, enabling optimization for different paper stiffness levels
Solution Approach 2:
The auxiliary roller acts as an intermediary element between the medium placement section and the separator unit. It mediates the interaction by providing a variable contact point that can adjust the contact angle, thereby controlling the feeding resistance and separation efficiency for different paper types
Data Source
AI summary
A medium feed device includes a feed roller provided to a device body and configured to feed paper, a separator roller provided at a position on the device body facing the feed roller and configured to separate the paper, and a medium support section configured to support the medium in an inclined state upstream of the feed roller. The medium support section is configured with a variable contact angle between the paper supported by the medium support section and the separator roller.