Pivoting Cutter Assembly for Linerless Label Jam Access
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Solution Overview
Problem
Linerless labels can adhere to printer components, particularly the platen roller, causing jams and damage due to exposed adhesive surfaces, exacerbated by environmental conditions.
Innovation Solution
A cutting assembly in the printer is designed with a hinge mechanism that allows it to move between engaged and disengaged positions, increasing the distance between the media scraper and platen roller to facilitate access and removal of jams, and includes sensors to prevent blade operation when disengaged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cutting assembly is positioned immediately proximate to the printing assembly, then the media scraper can effectively guide printed media off the platen roller, but the adhesive surface of the linerless label media can adhere to and wrap around the platen roller, causing jams
Solution Approach 1:
The cutting assembly is made movable between an engaged position (immediately proximate to the printing assembly for effective media guidance) and a disengaged position (spaced away to prevent adhesion). The hinge mechanism allows the cutting assembly to dynamically adjust its position based on operational needs, resolving the contradiction between effective media handling and adhesion prevention.
2Productivity
If the cutting assembly is in the engaged position, then printing operation can proceed normally, but access to the platen roller for jam removal is difficult
Solution Approach 1:
The cutting assembly transitions between engaged and disengaged positions, allowing the system to switch between printing operation mode and maintenance mode. When a jam occurs, the cutting assembly is moved to the disengaged position, creating sufficient space for users to access and remove jams from the platen roller without compromising printing productivity during normal operation.
3Ease of repair
If the distance between the cutting assembly and printing assembly is increased, then space between the platen roller and media scraper is increased facilitating access, but the media scraper cannot effectively guide the printed media
Solution Approach 1:
The system uses dynamic positioning of the cutting assembly to resolve this contradiction. The cutting assembly is positioned immediately proximate to the printing assembly during printing operations to ensure effective media guidance. When access to the platen roller is needed for maintenance or jam removal, the cutting assembly is moved to the disengaged position, creating the necessary space while maintaining media guidance effectiveness during operation.
4Adaptability or versatility
If the cutting blade is operable when the cutting assembly is disengaged, then cutting function is available, but the cutting blade may damage the platen roller or other components
Solution Approach 1:
A sensor detects the position of the cutting assembly (engaged or disengaged) and provides feedback to the control system. The control system uses this feedback to enable or disable the cutting blade operation accordingly. When the cutting assembly is disengaged, the sensor signals the control system to disable the cutting blade, preventing potential damage to the platen roller or other components. When engaged, the cutting blade is enabled for normal cutting operations.
Data Source
AI summary
Pivoting Cutters are disclosed herein. An example pivoting cutter includes a printing device, comprising a frame; a printing assembly including a printhead and a platen roller; and a cutting assembly including a cutting blade and a media scraper, the cutting assembly is disposed on a mounting apparatus which is mated to the frame by a hinge and has an engaged position and a disengaged position, in the engaged position, the cutting assembly is immediately proximate to the printing assembly, such that the media scraper is configured to guide a printed media off the platen roller and to the cutting blade, and in the disengaged position, the mounting apparatus is rotated about the hinge, and a distance between the cutting assembly and the printing assembly is increased.