Label Printer Roll Guiding Members for Friction Control
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Solution Overview
Problem
The existing label printers using drop-in loading systems for linerless label paper face issues with print defects due to variations in paper transportation load and friction, leading to inconsistent paper advancement and chaff buildup, which complicates paper replacement and can cause jams.
Innovation Solution
The implementation of roll guiding members that contact the outside of the label paper roll at specific points to maintain a stable position and reduce friction, ensuring consistent paper advancement and preventing chaff buildup, while allowing for easy drop-in loading and efficient paper roll replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If drop-in loading system is used for label paper rolls, then ease of operation is improved, but reliability deteriorates due to variations in paper transportation load and friction
Solution Approach 1:
The patent changes the physical parameters of the paper roll by adding a rigid core structure. This core provides a consistent diameter and structural integrity, ensuring that the paper transportation load remains constant regardless of the paper thickness or roll size, thereby resolving the reliability issue while maintaining ease of operation
Solution Approach 2:
The rigid core acts as an intermediary element between the paper roll and the transportation mechanism. It mediates the interaction by providing a consistent contact surface and friction characteristic, preventing variations in paper advancement that would otherwise occur with different paper types and thicknesses
2Manufacturing precision
If high friction load is applied to label paper roll, then paper advancement control is improved, but object-generated harmful factors worsen due to chaff buildup
Solution Approach 1:
The patent changes the friction parameter by introducing a core with specific surface properties. The core's surface is designed to provide optimal friction - enough to control paper advancement precisely, but not so much as to generate excessive heat and chaff. This resolves the contradiction between control precision and chaff generation
3Adaptability or versatility
If label paper roll diameter varies, then adaptability is improved, but manufacturing precision deteriorates due to variation in paper transportation distance
Solution Approach 1:
The patent introduces a core that standardizes the effective diameter parameter. Regardless of the outer paper roll diameter, the core maintains a constant reference diameter for paper winding, ensuring that the paper transportation distance remains consistent across different roll sizes and configurations
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 stabilizes paper transportation, prevents print defects caused by friction and chaff, and simplifies the paper replacement process, ensuring high-quality printing and easy recovery from jams.
Implementation Method 1
the pair of guide rollers 33a, 33b and 34a, 34b contact and rotate freely against the outside of the label paper roll 5
Implementation Method 2
The print head 15 is a thermal print head that prints using a thermosensitive printing method
Data Source
AI summary
A label printer enables drop-in loading of linerless label paper rolls and prevents print defects caused by variation in the label paper transportation and the readhesion of chaff to the label paper. A pair of roll guiding members 37 and 38 limit the position of the outside of the label paper roll 5 to a position separated a predetermined distance from the label paper entrance 11 by contacting the outside of the label paper roll 5 inside the roll paper compartment 7 of the label printer 31 at a position offset from the label paper entrance 11 toward the center of the roll paper compartment 7. The roll guiding members 37 and 38 are members with low friction resistance when in contact with the outside of the label paper roll 5, and thus reduce the friction that can cause inconsistent paper transportation and chaff from wear.