Roll Medium Alignment via Light Reference Marks
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Solution Overview
Problem
Setting a roll medium in parallel between a wind-out unit and a takeup unit in ink jet print apparatuses is time-consuming and requires high technical skill due to the need for precise alignment.
Innovation Solution
A roll medium transport apparatus that includes a feed roll medium support unit, a takeup roll medium support unit, a position acquiring unit, and a radiating unit that uses light to align the roll medium by marking a reference point on the takeup roll, allowing for easy parallel alignment and improved operational efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the print medium is set onto the takeup unit manually to achieve parallel alignment, then the alignment precision is improved, but the setting time and operational complexity increase
Solution Approach 1:
A light source is introduced as an intermediary tool to project reference marks onto the takeup roll. This visual mediator enables the operator to quickly identify the correct positioning point without complex manual alignment procedures, thereby maintaining high alignment precision while significantly reducing setting time
Solution Approach 2:
The patent replaces the traditional mechanical alignment method (manual visual estimation and physical adjustment) with an optical system. The light source projects reference marks that guide positioning, substituting mechanical trial-and-error alignment with optical visualization, thus improving efficiency without sacrificing precision
2Manufacturing precision
If manual alignment technique is used to set the print medium in parallel, then the alignment accuracy is improved, but the ease of operation deteriorates
Solution Approach 1:
The light source acts as an intermediary that provides visual reference marks on the takeup roll. This intermediary tool bridges the gap between the operator and the alignment task, making the operation intuitive and easy to perform while ensuring accurate parallel alignment through the projected reference points
3Ease of operation
If a light source is introduced to mark the takeup roll for alignment, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The light source is integrated into the existing feed roll support unit structure, allowing it to serve multiple functions: providing illumination for the workspace and projecting alignment reference marks onto the takeup roll. This multi-functionality approach adds minimal complexity while significantly improving ease of operation
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 apparatus enables easy and efficient setting of the roll medium in parallel by providing a visible light marking on the takeup roll, enhancing the ease of operation and reducing setup time.
Implementation Method 1
a radiating unit capable of radiating light with a position of the side end portion being used as a reference point
Data Source
AI summary
A roll medium transport apparatus includes a feed roll medium support unit that feeds a roll medium, a takeup roll medium support unit that winds up the roll medium that has been fed, a position acquiring unit that acquires a position of a side end portion of the roll medium that is to be fed, a radiating unit capable of radiating light with a position of the side end portion being used as a reference point. The radiating unit is held by the feed roll medium support unit and allows the light to be radiated to a takeup roll that winds up the roll medium.