Bill Handling Light Guide Transverse Orientation
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Solution Overview
Problem
Existing bill handling apparatuses face challenges in miniaturization due to unstable light emission at the ends of light guide members, leading to increased size in the bill passage width direction, which affects identification accuracy and overall apparatus size.
Innovation Solution
A bill handling apparatus with a light guide member that enters inside the side wall portion, where the light-emitting portion is configured as a light guide member receiving light from a light-emitting device, and the opposite end portions are positioned outward from the side wall to improve emission stability and accuracy, allowing for compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the light guide member is used as the light-emitting portion to irradiate the bill, then the bill reading capability is improved, but the emission amount becomes unstable at the end portions causing increased apparatus size
Solution Approach 1:
The light guide member is rotated 90 degrees relative to the bill feeding direction, changing the spatial arrangement from longitudinal to transverse orientation. This dimensional change allows the light guide to extend in the width direction rather than along the feeding path, enabling compact design while maintaining stable light emission for bill reading
Solution Approach 2:
The light guide member is designed with differentiated end portions: one end extends beyond the bill passage width to provide stable light emission, while the other end is positioned within the passage width. This local differentiation optimizes the light emission characteristics at different locations, ensuring stable reading capability without increasing overall apparatus size
2Reliability
If the light guide member extends beyond the bill passage width to ensure stable emission, then the emission stability is improved, but the apparatus size increases
Solution Approach 1:
By rotating the light guide member 90 degrees and extending it in the width direction rather than along the feeding path, the design achieves stable light emission within a compact footprint. The light guide extends beyond the bill passage width in the transverse direction, providing stable emission without increasing the longitudinal size of the apparatus
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
This configuration enhances bill identification accuracy while reducing the apparatus size in the bill passage width direction, achieving miniaturization without compromising identification precision.
Implementation Method 1
a light guide member that extends in the width direction of the fed bill and that receives at its one end the light applied from at least one LED
Implementation Method 2
a photosensor which applies light to the fed bill and detects the reflected light and/or transmitted light
Data Source
AI summary
A bill handling apparatus according to one embodiment of the invention has a frame provided with a bill feeding path in which a bill is fed and with side wall portions provided in the width direction of the bill feeding path, a bill reading section installed in the frame to read a fed bill, and a bill identifying section for identifying authentication of the bill read by the bill reading section. The bill reading section is provided with a light guide member to which light is input from a light-emitting device as a light-emitting portion that applies the light to the fed bill, and the light guide member is installed to enter inside the side wall portions.