Roll Printing Winding Control for Low-Waste Media Fixing
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Solution Overview
Problem
Existing printing apparatuses consume a large amount of paper due to the need to fix the leading end of the medium to the winding core material before printing, leading to waste when the user forgets the printing is in progress, and the medium becomes dirty or difficult to fold for fixing.
Innovation Solution
A printing apparatus with a prompting unit that alerts the user to fix the medium's leading end to the winding core material downstream of the printing position and a stopping unit that halts conveyance when necessary, using normal and intra-page stop printing data to prevent waste and improve printing quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the leading end of the medium is fixed to the winding core material before printing, then the medium can be wound up properly after printing, but a large amount of paper is consumed and wasted when the user forgets the printing is in progress
Solution Approach 1:
The system performs preliminary actions by automatically conveying the medium to the winding core material position and stopping the conveyance in advance, allowing the user to fix the leading end without waiting for the medium to reach the floor or become dirty. This prevents paper waste while ensuring reliable winding.
Solution Approach 2:
The control unit provides feedback by detecting the position of the leading end of the medium and automatically stopping the conveyance when the medium reaches a predetermined position near the winding core material. This feedback mechanism ensures the user fixes the medium at the optimal moment without wasting paper.
2Loss of substance
If the leading end of the medium is fixed to the winding core material after printing starts, then paper consumption is reduced, but the user may forget the printing is in progress and the medium becomes dirty or difficult to fold
Solution Approach 1:
The system automatically performs the conveyance action in advance before the user needs to fix the medium. The control unit stops the conveyance when the leading end reaches a predetermined position, creating a ready state for the user to fix the medium without delay, thus preventing paper waste while ensuring reliability.
Solution Approach 2:
The system serves itself by automatically conveying the medium and stopping at the correct position without requiring user intervention or memory. The control unit autonomously manages the conveyance process, freeing the user to focus on other tasks while ensuring the medium is ready for fixing.
3Productivity
If the conveyance continues without stopping, then printing productivity is maintained, but the medium may reach the floor and become dirty, causing waste
Solution Approach 1:
The conveyance operation is made periodic by automatically stopping at predetermined positions during the printing process. The control unit stops the conveyance when the leading end reaches a position near the winding core material, allowing the user to fix the medium, then resumes conveyance. This periodic stopping prevents paper waste while maintaining overall productivity.
Solution Approach 2:
The system uses feedback from position detection to control the conveyance operation. The control unit continuously monitors the position of the leading end and stops the conveyance when a predetermined position is reached, preventing the medium from reaching the floor and becoming dirty, thus avoiding waste while maintaining printing productivity.
Data Source
AI summary
A printing apparatus includes: a printing unit configured to perform printing on a medium; a conveyance unit configured to convey the medium; a winding unit configured to wind up the medium after printing; and a prompting unit configured to prompt a user to fix a leading end of the medium to a winding core material in response to the leading end of the medium reaching a prompting position located downstream of the printing position in the printing unit.