Cutter Apparatus Guide Portion Prevents Paper Jamming
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing printers face issues with paper scattering and warping during partial cuts, which can cause paper jams and reduce cutting efficiency, especially when backfed.
Innovation Solution
A cutter apparatus with a first blade and a second blade, where the first blade moves between a standby and cutting position, and includes a guide portion that protrudes further than the second blade's cutting edge, allowing the second blade to flex and change curvature, preventing paper scattering and jams by maintaining contact at a single point during cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a partial cut is performed on the recording paper, then the cut recording paper can be easily torn as necessary and prevented from scattering, but the recording paper may warp and get caught in the cutter blade during backfeeding
Solution Approach 1:
A guide portion protruding from the second blade structure acts as an intermediary element between the paper and the cutting blades. This guide portion prevents paper warping and guides the paper smoothly during backfeeding, eliminating the paper jam problem while maintaining the partial cut functionality for easy tearing
2Manufacturing precision
If the second blade is made rigid to ensure precise cutting, then cutting precision is improved, but the blade cannot adapt to paper warping and increases the risk of paper jams
Solution Approach 1:
The second blade is designed with flexibility to dynamically adapt to paper warping during the cutting process. The blade can bend slightly to accommodate paper irregularities while maintaining cutting precision, and the guide portion ensures smooth paper guidance during backfeeding to prevent jams
3Reliability
If the guide portion protrudes further than the cutting edge, then paper guidance is improved during backfeeding, but the structure becomes more complex
Solution Approach 1:
The guide portion is merged with the second blade structure, combining the cutting function and the paper guidance function into a single integrated component. This reduces overall structural complexity while maintaining effective paper guidance during backfeeding
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 paper scattering and warping, ensuring smooth cutting and reducing the risk of paper jams, even during backfeeding, by maintaining a stable cutting point and guiding the paper to avoid the cutting edge.
Implementation Method 1
the second blade may includes a curvature in a thickness direction and, when the first blade moves to the cutting position and intersects with the second blade, the second blade may flex, thereby causing the curvature of the second blade to change conforming to the first blade
Implementation Method 2
a first urging member configured to urge the guide portion toward the second blade
Data Source
AI summary
A cutter apparatus is provided that includes a fixed blade and a movable blade positioned facing the fixed blade, and that is configured to cut a medium transported between the fixed blade and the movable blade. The movable blade includes: a guide portion that is driven to reciprocate between a standby position at a distance from the medium and a cutting position, where the movable blade intermeshes with the fixed blade, protrudes further toward the movable blade than a cutting edge of the fixed blade when the movable blade is in the standby position, and is pressed by the movable blade to move in a state of being contact with the fixed blade when the movable blade is in the cutting position; and a biasing member configured to bias the guide portion toward the fixed blade.