Rolled Paper Guide Projection for Stable Printer Discharge
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Solution Overview
Problem
There is a concern that paper may fall from the paper discharge guide in printers using rolled paper, which can lead to inefficiencies and user inconvenience.
Innovation Solution
A rolled paper printing device with a cover that opens/closes a case, a roller to draw out and transport paper, a head for printing, a cutter to cut the paper, and a paper guide that includes a first and second guide to stabilize the paper, along with a projection to contact the paper and suppress falling, ensuring smooth discharge and easy retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple paper discharge guide is used, then the device structure is simple, but the paper may fall from the guide causing operational issues
Solution Approach 1:
The patent adds a projection element extending in the paper discharge direction, transforming the guide from a simple planar structure to a three-dimensional structure with depth. This projection creates a physical barrier that prevents paper from falling off while maintaining guide functionality.
Solution Approach 2:
The projection acts as an intermediary element between the paper and the guide body, providing frictional contact and mechanical support. This intermediate structure prevents direct paper drop-off while allowing controlled paper movement through the guide.
2Reliability
If frictional forces are increased to suppress paper curling, then paper discharge stability improves, but paper transport resistance increases
Solution Approach 1:
The frictional contact is localized to specific regions where the projection contacts the paper, rather than along the entire paper path. This concentrated friction application suppresses curling at critical points without creating excessive resistance throughout the entire transport journey.
Solution Approach 2:
The projection provides just enough frictional force to counteract paper curling tendencies during discharge, applying partial action rather than continuous high friction. This sufficient-but-not-excessive friction stabilizes paper without significantly impeding transport.
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 device effectively suppresses paper falling from the guide by generating frictional forces that counteract the curling motion of the paper, allowing for easy and continuous paper transport and retrieval without jams.
Implementation Method 1
a projection formed at the first guide and configured to come into contact with the first surface of the paper at a position downstream of the second opening in the transport direction... generating frictional forces that counteract the curling motion of the paper
Data Source
AI summary
A rolled paper printing device includes a cover that opens/closes a case, a roller that draws out paper from rolled paper, a head for printing, a cutter that cuts the paper, and a paper guide mounted on the cover. When the cover is closed, a paper discharge port for discharging the paper is formed, and the paper guide includes a first guide that guides a first surface of the paper, a second guide that guides a second surface of the paper, a first opening into which the paper discharged from the paper discharge port is inserted, a second opening communicating with the first opening, the paper being taken out from the second opening, and a projection formed at the first guide and configured to come into contact with the first surface of the paper at a position downstream of the second opening in a transport direction.