Image Decolorizing Device Guide Roller Friction Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional image decolorizing devices often experience sheet jams due to curling and misalignment when passing through pairs of heating and pressure rollers, leading to decolorization inefficiencies.
Innovation Solution
Incorporating a guide that directs the sheet to the heating roller with lower surface friction, preventing jams by ensuring proper alignment and reducing surface friction drag, thus facilitating smooth passage through the decolorizing units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sheet passes through pairs of heating and press rollers for decolorization, then the color of the color material is decolorized, but sheet jams occur due to curling and misalignment
Solution Approach 1:
A guide roller is introduced as an intermediary component between the heating-press roller pairs to mediate the sheet's path. The guide roller has a specific surface friction coefficient that is lower than that of the heating and press rollers, allowing it to act as a smooth transition element that prevents curling and misalignment without interfering with the decolorization function of the heating rollers.
Solution Approach 2:
Different rollers in the system are given different surface friction characteristics. The guide roller specifically has a lower surface friction coefficient compared to the heating and press rollers. This local differentiation in friction properties allows the guide roller to specifically address the curling and misalignment problem at critical transition points while maintaining the necessary friction for effective heat transfer and pressure application at the decolorization zones.
2Productivity
If the sheet is conveyed through multiple heating conveying units, then both sides of the sheet are decolorized, but misalignment and curling increase friction drag
Solution Approach 1:
The guide roller serves as a mediator between heating conveying units, providing a low-friction surface that reduces energy loss during sheet transitions. By positioning guide rollers at strategic locations between heating-press roller pairs, the system minimizes friction drag and associated energy losses while maintaining continuous sheet conveyance for effective decolorization of both sides.
3Shape
If the sheet curls after passing through heating rollers, then the sheet may contact the pressure roller head-on, but this causes crinkling, bending, and misalignment
Solution Approach 1:
The guide roller is positioned to provide preliminary anti-action against sheet curling before the sheet reaches the pressure roller. By having the sheet pass over the guide roller surface with appropriate friction characteristics, the system preemptively counteracts the curling tendency, preventing the sheet from contacting the pressure roller head-on and thereby avoiding crinkling, bending, and misalignment.
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
Prevents sheet jams and ensures effective decolorization of both sides of the sheet by maintaining proper alignment and reducing friction, enhancing the overall efficiency of the decolorizing process.
Implementation Method 1
the heating roller heats the sheet
Implementation Method 2
the press roller presses the sheet to the heating roller
Implementation Method 3
guide that directs the sheet to the heating roller with lower surface friction, preventing jams by ensuring proper alignment and reducing surface friction drag
Data Source
AI summary
According to embodiments, the image decolorizing device has a first heating conveying unit, a second heating conveying unit, and a guide. The first heating conveying unit has a first heating member that heats a first surface of the sheet and a first pressure member that presses the sheet to the first heating member. The second heating conveying unit has a second heating member that heats the second surface of the sheet and a second pressure member that presses the sheet to the second heating member. The guide is provided between the first heating conveying unit and the second heating conveying unit and that guides the sheet that is conveyed through the first heating conveying unit, to the second heating member of the second heating conveying unit.