Printer Roller Assembly with Interchangeable Pinch Roller
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Solution Overview
Problem
Conventional printer apparatuses require complex lever operations to adjust clamp states for different types of printing media, leading to complicated settings when handling various materials, shapes, and thicknesses, especially when switching between sheet-like and plate-like media.
Innovation Solution
A printer apparatus with a roller assembly that includes a detachable roller member with a pivotally supported pinch roller, allowing for easy exchange based on medium type and thickness, featuring a recessed part for attachment to a fixed shaft, enabling simple adjustment of clamp states without the need for multiple lever operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple roller assemblies with independent clamp pressure setting mechanisms are provided to handle various printing media types, then the adaptability to different materials and thicknesses is improved, but the device complexity and ease of operation deteriorate due to requiring multiple lever adjustments
Solution Approach 1:
A single roller assembly is designed to handle multiple types of printing media (sheet-like and plate-like) through a universal clamp mechanism. The roller member can be exchanged based on media type, but the overall assembly structure remains the same, eliminating the need for multiple specialized roller assemblies with independent clamp mechanisms for each media type.
Solution Approach 2:
The clamp engage/disengage mechanism and clamp pressure setting mechanism are merged into a single integrated system. By combining these functions, the patent reduces the number of separate levers and mechanisms that would otherwise need to be adjusted independently for each roller assembly, thereby simplifying the overall device structure while maintaining adaptability.
2Ease of operation
If multiple roller assemblies with independent clamp engage and disengage mechanisms are provided for each printing medium type, then the ease of operation for specific media is improved, but the device complexity increases due to multiple independent mechanisms
Solution Approach 1:
A single roller assembly with a universal clamp mechanism is designed to handle multiple types of printing media. The clamp engage/disengage mechanism and clamp pressure setting mechanism are integrated into this universal assembly, allowing it to perform multiple functions without requiring separate independent mechanisms for each media type.
Solution Approach 2:
The roller assembly is segmented into interchangeable components: the roller member can be exchanged based on media type, while the clamp mechanism remains integrated and reusable. This segmentation allows the system to maintain simplicity while adapting to different media requirements.
3Device complexity
If conventional roller assemblies with fixed clamp mechanisms are used, then the device complexity is reduced, but the adaptability to different printing media types and thicknesses deteriorates
Solution Approach 1:
The roller assembly is divided into interchangeable components, specifically the roller member that can be exchanged based on media type and thickness requirements. This segmentation allows the system to maintain a simple integrated clamp mechanism while gaining adaptability through component interchangeability.
Solution Approach 2:
The roller assembly transitions from a fixed clamp mechanism to a dynamic system where the roller member can be exchanged to adapt to different media types. The integrated clamp mechanism remains, but its effectiveness is enhanced by the ability to exchange roller members suited for specific media characteristics.
4Manufacturing precision
If multiple roller assemblies are provided with independent clamp pressure settings for fine adjustment, then the manufacturing precision for different media is improved, but the ease of operation deteriorates due to multiple lever adjustments required
Solution Approach 1:
The clamp engage/disengage mechanism and clamp pressure setting mechanism are merged into a single integrated system within the roller assembly. This integration reduces the number of independent adjustments required while maintaining the capability for precise clamp pressure control suitable for different media types.
Solution Approach 2:
The roller assembly is segmented into an interchangeable roller member and an integrated clamp mechanism. This allows feeding precision to be optimized by selecting the appropriate roller member for the media type, while the integrated clamp mechanism provides consistent, reliable pressure control without requiring multiple independent adjustments.
Data Source
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AI summary
[Problem to be Solved] To provide a printer apparatus which is capable of suitably clamping a printing medium of various types of material / thickness, for example, a sheet-like medium and a plate-like medium with a simple structure and is capable of feeding the printing medium accurately. [Solution] A printer apparatus in the present invention includes a feeding mechanism having a feed roller provided at substantially the same height as an upper face of a medium support means and a plurality of roller assemblies having a pinch roller disposed above the feed roller and a printing medium placed on the medium support means is pinched between the feed roller and the pinch roller to be fed in the front and rear direction. The roller assembly is structured of an assembly main body and a roller member which includes the pinch roller and is attachable /detachable with respect to the assembly main body, and a clamp state can be changed by exchanging the roller member depending on material and/or thickness of the printing medium.