Cash Spoiling System With Controlled Edge Adhesive Application
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Solution Overview
Problem
Existing cash spoiling systems in ATMs fail to reliably render banknotes unusable and identifiable due to unpredictable adhesive application, leading to potential financial loss and authentication challenges.
Innovation Solution
A cash spoiling system that applies adhesive to both edges of banknotes in a controlled and consistent manner, ensuring complete unusability while allowing individual authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is sprayed into the cassette over the notes in a non-uniform chaotic manner, then all notes are intended to be bonded together to render them useless, but individual notes cannot be subsequently separated for authentication and some notes may not be properly bonded
Solution Approach 1:
The adhesive application is segmented into multiple targeted zones along the edges of the banknote stack rather than chaotic spraying. This ensures bonds at specific locations while leaving central portions separable for authentication purposes.
Solution Approach 2:
Different regions of the banknotes receive different treatments: edges receive adhesive bonds to render notes unusable, while central portions remain adhesive-free to allow authentication. This local differentiation resolves the contradiction between rendering notes unusable and enabling authentication.
2Reliability
If adhesive is applied to bond all notes together, then notes are rendered unusable, but they cannot be individually identified by the responsible authority for replacement
Solution Approach 1:
The bonding is segmented to occur only at edge portions of the banknote stack, leaving central authentication zones exposed. This segmentation allows notes to be both bonded (rendered unusable) and identifiable (central portions visible for authentication).
Solution Approach 2:
Edge regions are treated with adhesive for bonding while central regions remain untreated for identification. This local quality differentiation simultaneously achieves note spoilage and maintains authentication capability.
3Reliability
If adhesive spraying is used to bond notes, then notes are rendered unusable, but the chaotic application method is unpredictable and may leave some notes unbonded
Solution Approach 1:
The adhesive application is divided into discrete segments at specific edge locations rather than random spraying. This segmentation ensures predictable and uniform bonding at targeted zones while maintaining reliability of note spoilage.
Solution Approach 2:
The adhesive application parameters are changed from chaotic spraying to controlled dispensing at specific locations. This changes the application pattern from random to predictable, ensuring uniform bonding coverage where needed.
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
Ensures all banknotes are rendered unusable and identifiable, facilitating reliable reimbursement by authorities.
Implementation Method 1
Another known method of spoiling banknotes involves the use of an adhesive as the spoiling agent. The adhesive is deposited over the banknotes which acts to bond them together
Data Source
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AI summary
An apparatus (10) for spoiling banknotes (103) arranged in a block formation within a cassette (100). The apparatus (10) comprises a cassette (100) for carrying a block of banknotes (103), a main housing (20) in which is located at least one cartridge (31) containing a spoiling fluid, and first and second spray bars (61, 62) extending from the housing (20). The spray bars (61, 62) are in fluid communication with the at least one cartridge (31), and the main housing (20) further comprises a valve (40) configured to release the spoiling fluid from the at least one cartridge (31) and into the spray bars (61, 62). In use, the first spray bar (61) extends across the length and proximate a first end of the block of banknotes (103) within the cassette (100) and the second spray bar (62) extends across the length and proximate a second end of the block of banknotes (103) within the cassette (100). The spray bars (61, 62) disperse the spoiling fluid over first and second ends and along the entire length of the block of banknotes (103) within the cassette (100) and a central portion along the entire length of the block of banknotes (103) remains free from spoiling fluid.