Split Roller Peeling Device for Inkjet Printers
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Solution Overview
Problem
The existing peeling device mechanisms for label paper in ink jet printers face issues with transport accuracy due to variance in biasing force applied to rollers, which affects printing quality, especially when using the ink jet method.
Innovation Solution
A peeling device with a split roller and biasing members that evenly apply force to the roller shaft, ensuring consistent contact with the backing paper, and a detachable roller unit with ribs to prevent adhesive issues, improving transport accuracy and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If interposing rollers are used to transport backing paper, then setting of the label paper is simplified, but transport accuracy deteriorates due to variance in biasing force applied to each roller
Solution Approach 1:
The first roller is divided into multiple segments (first through fourth rollers) that can independently rotate around the shaft. This segmentation allows each segment to be individually biased toward the second roller, ensuring uniform pressure distribution and consistent transport accuracy while maintaining the ease of operation provided by the interposing roller mechanism.
Solution Approach 2:
The biasing members (springs) provide dynamic, adjustable biasing forces to each roller segment. The biasing force can be modified by changing the spring characteristics or precompression, allowing optimization of transport accuracy while preserving the operational simplicity of the interposing roller system.
2Object-generated harmful factors
If the area of the roller contacting the label attaching surface is reduced, then adhesive adhesion to rollers is decreased, but biasing force uniformity deteriorates
Solution Approach 1:
By segmenting the first roller into multiple independently rotatable rollers, the contact area with the adhesive surface is distributed across multiple smaller contact points. This reduces overall adhesive adhesion to the rollers while maintaining uniform biasing force through individual spring mechanisms, thereby preserving transport accuracy.
3Manufacturing precision
If biasing members are not symmetrically disposed, then application of biasing force becomes uneven, but device complexity increases with symmetric arrangement
Solution Approach 1:
The shaft is designed with asymmetric features (protrusions and corresponding recesses) that enable the symmetric arrangement of biasing members. This asymmetric design at the connection interface simplifies the overall structure by allowing standard symmetric spring placement, ensuring uniform biasing force without requiring complex asymmetric support mechanisms.
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 enhances transport accuracy and printing quality by evenly applying biasing force to the rollers and allows for easy maintenance of the peeling device, reducing adhesive issues and improving usability.
Implementation Method 1
a biasing member configured to come into contact with the shaft in an area on the first roller between the support portions, the biasing member being configured to bias the first roller toward the second roller
Implementation Method 2
a roller unit has the first roller and the biasing members mounted thereon
Data Source
AI summary
The peeling device has a pressing roller that comes into contact with a label attaching surface (a first surface) of the backing paper and a driving roller that comes into contact with a back surface of the backing paper. The peeling device includes a peeling plate that is provided on the upstream side of an interposing roller pair in a transport direction of the backing paper when the label is peeled off from the backing paper and that bends a transport path of the backing paper. The pressing roller is a split roller including a roller shaft and a plurality of rollers. The peeling device includes support frames that support the pressing roller, and coil springs that come into contact with the roller shaft in an area on the pressing roller between the support frames and that bias the pressing roller toward the driving roller.