Long Medium Edge Indicators for Remaining Length Detection
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Solution Overview
Problem
Existing long media for printers lack an efficient method to visually and accurately determine the remaining length, leading to wastage and cumbersome rewinding processes, as existing indicators are difficult for general users to interpret and require decoding.
Innovation Solution
A long medium with equidistantly spaced holes and indicators on its side edges, where the spacing between holes and indicators allows for visual and mechanical detection of the remaining length, enabling easy and accurate assessment of the remaining medium length without narrowing the print area or increasing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If visual indicators are provided on the long medium to show remaining length, then the remaining amount can be visually checked, but the indicators are difficult for general users to interpret and require decoding
Solution Approach 1:
The patent applies color changes by using indicators with different transparency levels (first indicators are more transparent, second indicators are less transparent). This allows users to visually distinguish between different remaining length ranges without requiring decoding, as the transparency difference creates an intuitive visual gradient that directly indicates the remaining length status.
2Measurement precision
If the long medium is removed for visual checking of remaining amount, then the remaining length can be assessed, but the process is cumbersome and time-consuming
Solution Approach 1:
The patent applies self-service by making the long medium itself provide the measurement information through its built-in indicators. The indicators are positioned and designed so that users can directly view the remaining length information while the medium is installed in the printer, eliminating the need to remove the medium for checking. The medium serves its own measurement function through the visual indicators.
3Loss of information
If indicators are added to the long medium, then remaining length can be detected, but the print area may be narrowed and costs may increase
Solution Approach 1:
The patent applies merging by combining the functional sprocket holes with the role of visual indicators. The sprocket holes, which are already present and necessary for the medium to function in the printer, are positioned and utilized as the indicator markers. This eliminates the need for separate indicator elements, avoiding additional manufacturing costs and maintaining the full print area without any narrowing.
Data Source
AI summary
A plurality of marks (11) equidistantly provided on both side edge parts (1a) of a long medium (1), a plurality of first indicator holes (12) equidistantly given on at least one of the side edge parts (1a), and a plurality of second indicator holes (13) given on at least one of the side edge parts (1a) on a straight line different from a row of the first indicator holes (12) at spacings shorter than spacings of the first indicator holes (12) are provided, and the second indicator holes (13) are each provided to a side of a trailing-end mark (11b), and each gradually comes closer to a leading-end mark (11a) as the long medium (1) runs toward a trailing end.