Linerless Media Wrap Removal via Manually Rotatable Platen Roller
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Solution Overview
Problem
Linerless labels can adhere to printer components, particularly the platen roller, causing jams and damage due to their exposed adhesive surface, exacerbated by environmental conditions.
Innovation Solution
A printer design with a platen roller assembly featuring a manually rotatable axle and a tool-accessible mating structure at the distal end, allowing manual rotation to remove adhered linerless media, combined with a printhead assembly that moves between engaged and disengaged positions for improved access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If linerless labels are used to eliminate liners, then waste reduction is achieved, but the adhesive surface adheres to printer components causing jams and damage
Solution Approach 1:
The platen roller assembly is designed with a removable outer core that can be extracted from the axle. This allows the adhesive-covered linerless media to be removed from the printing mechanism by taking out the core, thereby eliminating the harmful adhesion problem while maintaining the waste-reducing benefit of linerless labels
Solution Approach 2:
The platen roller assembly is segmented into multiple components: an axle, bearings, and a removable outer core. This segmentation allows the outer core to be independently removed when media adhesion occurs, enabling easy cleanup without damaging the entire printing mechanism or requiring disposal of the whole assembly
2Extent of automation
If the platen roller is designed with fixed components for automatic rotation, then printing operation is automated, but manual access for removing adhered media is difficult
Solution Approach 1:
The outer core is designed to be extractable from the axle, providing a manual access point for removing adhered media. This extraction mechanism allows operators to easily remove wrapped media by simply removing the core, maintaining automated printing operation while solving the accessibility problem
Solution Approach 2:
The platen roller assembly transitions between a fixed state during automated printing and a disassembled state for manual media removal. The removable outer core enables this dynamic configuration change, allowing the system to switch between automated operation and manual maintenance modes as needed
3Ease of operation
If the axle extends significantly beyond the printer housing for manual rotation, then manual access is improved, but the printer structure becomes more complex and larger
Solution Approach 1:
Instead of extending the axle for manual access, the design extracts the outer core from the axle. This provides manual access to the media without requiring the axle to extend beyond the housing, maintaining a compact printer structure while enabling easy media removal
Solution Approach 2:
The solution moves from a linear extension of the axle (one-dimensional approach) to a radial extraction of the outer core (two-dimensional approach). This dimensional change allows manual access to the media through core removal rather than axle extension, avoiding increased device complexity and size
Data Source
AI summary
A printer is disclosed that includes a platen roller assembly, a frame, and a drive assembly. The drive assembly is operatively coupled to a first mating structure at a proximal end of an axle of the platen roller assembly to automatically rotate the axle via the proximal end of the axle during a printing operation. The axle is manually rotated in situ via a second mating structure at a distal end during an operation to remove linerless media wrapped around the platen roller assembly.