Rolled Paper Cutter Guide Layout for Compact Printer Size
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Solution Overview
Problem
The related art printer designs, such as JP-A-2011-136472, face an issue of increased printer size due to the wide moving range of the back feed guide, which is necessary for cutting rolled paper.
Innovation Solution
A rolled paper printing apparatus with a cutter mechanism that includes a first blade movable in a first direction toward a second blade, a first blade-side guide, and a paper guide with rotatable first and second guides, which are pushed by the first blade to minimize the distance of movement and reduce the overall size of the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the back feed guide is designed with a wide moving range to accommodate the cutter blade movement, then the paper cutting function is improved, but the printer size increases
Solution Approach 1:
The patent applies the dynamics principle by making the guide structure movable rather than fixed. The guide includes a movable guide member that can shift position to accommodate the cutter blade movement, allowing the same guide to serve multiple positions without requiring a large fixed structure. This dynamic adjustment enables the printer to maintain compact dimensions while still providing the necessary range of motion for paper cutting operations.
Solution Approach 2:
The patent implements nesting by placing the movable guide member within the existing guide structure. The movable guide component is nested inside the stationary guide framework, allowing it to move within a confined space. This nested configuration enables the guide system to provide extended functional range without proportionally increasing the overall printer volume, as the movable component operates within the envelope of the stationary structure.
2Device complexity
If the guide structure is made stationary and fixed, then the printer structure is simplified, but the cutter blade cannot move freely to cut paper
Solution Approach 1:
The patent resolves this contradiction by introducing a movable guide member that can change position dynamically. Rather than making the entire guide structure complex and movable, only a portion of the guide (the movable guide member) is designed to move, while the main guide structure remains stationary. This selective dynamics approach provides the necessary blade movement freedom while keeping the overall structure relatively simple.
Solution Approach 2:
The patent applies segmentation by dividing the guide structure into multiple functional parts: a stationary guide framework and a movable guide member. This segmentation allows different portions of the guide system to have different degrees of freedom - the stationary part provides structural stability and simplification, while the movable part enables the cutter blade to move freely for cutting operations.
Data Source
AI summary
A rolled paper printing apparatus includes a roller, a cutter capable of cutting the rolled paper and including a first blade and a second blade, a first blade-side guide capable of guiding, from the side of the first blade, the paper transported, and a paper guide including a first guide and a second guide. The paper guide includes a first arm on which the first guide is mounted rotatably about a first shaft, a second arm on which the second guide is mounted rotatably about a second shaft, and an arm shaft that rotatably supports the first arm and the second arm. The first guide and the second guide are pushed by the first blade moving in the first direction, and move in the first direction while rotating from a first position at which the paper can be guided and reach a second position.