Printer Guide Roller Rotating Against Adhesive Paper
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Solution Overview
Problem
Printers face challenges in conveying linerless recording paper with an adhesive bottom surface, as the adhesive surface tends to adhere to the platen roller and guide components, preventing normal conveyance and potentially causing jams.
Innovation Solution
Incorporating a guide roller with a tapered edge and a one-piece structure, possibly made of rubber, resin, or metal, that rotates in contact with the recording paper to minimize adhesion and facilitate easy peeling, ensuring smooth conveyance even with adhesive surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the recording sheet with adhesive bottom surface is conveyed using conventional guide components, then the adhesive surface adheres to the platen roller and guide components, but this prevents normal conveyance and causes jams
Solution Approach 1:
A release sheet is introduced as an intermediary component between the adhesive recording sheet and the platen roller/guide components. The release sheet prevents direct adhesion by providing a non-stick surface, allowing the adhesive sheet to be conveyed without jamming while maintaining the adhesive function of the recording sheet.
Solution Approach 2:
The surface properties of the guide components are modified by changing from conventional materials to materials with low adhesion characteristics (such as fluorinated coatings or specific polymers). This parameter change in surface energy reduces the adhesive force between the guide components and the recording sheet, preventing jams.
2Object-generated harmful factors
If a release sheet is provided between the adhesive surface and guide components, then adhesion is prevented, but the structure becomes more complex
Solution Approach 1:
The release sheet function is merged with the existing guide roller structure by coating the roller surface with release properties or integrating the release sheet into the roller assembly. This combination approach provides the adhesion-prevention function without adding separate complex components.
Solution Approach 2:
The release sheet is designed to be automatically fed and positioned through the existing conveyance mechanism without requiring separate control systems. The sheet peel-off process is self-regulating, using the natural adhesion differential between the release sheet and recording sheet to maintain proper positioning.
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
The solution effectively prevents the adhesive surface from adhering to the platen roller and guide components, allowing for normal conveyance of recording paper with adhesive bottom surfaces, reducing the risk of jams and ensuring uninterrupted printing.
Implementation Method 1
the roller part is configured to rotate in contact with the recording sheet as the recording sheet is conveyed
Data Source
AI summary
A printer includes a head unit and a platen unit. The head unit includes a print head. The platen unit includes a platen roller, a support, and a guide roller. The platen roller is rotatably supported on the support and configured to rotate to convey recording sheet. The guide roller includes a roller part, and the roller part is configured to rotate in contact with the recording sheet as the recording sheet is conveyed.