Printer Component Verification via Physical Property Measurement
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Solution Overview
Problem
Counterfeit replaceable printer components can be produced by extracting authentication information from authentic components, leading to improper settings that may damage printers and affect warranties, as existing methods struggle to securely verify the authenticity of these components.
Innovation Solution
Incorporating a communication engine, sensor engine, and verification engine within the replaceable printer component to perform operations that modify physical properties, measure these changes, and verify if the host printer has correctly executed the operations, thereby ensuring authenticity and preventing unauthorized access to features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authentication information is stored in replaceable printer components, then the printer can verify authenticity, but counterfeit components can extract this information and produce unauthorized copies
Solution Approach 1:
The patent extracts the authentication information from the replaceable printer component and stores it in a fixed, non-removable location within the printer host. This separation prevents counterfeit components from accessing or copying the authentication data, as the verification information remains permanently bound to the original printer system.
Solution Approach 2:
The patent introduces an intermediary verification process where the printer host mediates between the replaceable component and the authentication information. Instead of direct access to authentication data stored in the component, the host acts as a mediator that holds the verification information and performs authentication, creating a security barrier that prevents unauthorized extraction.
2Ease of manufacture
If authentication information is extracted from authentic components, then counterfeit components can be produced, but this compromises printer security and may cause damage
Solution Approach 1:
The patent performs preliminary action by pre-storing the authentication information in the printer host before any replaceable component is installed. This advance preparation ensures that when a component is inserted, the authentication verification can immediately occur without any risk of information extraction, as the verification data is already securely in place and cannot be obtained from the component itself.
3Reliability
If replaceable components store authentication information, then verification is possible, but the information can be compromised leading to improper settings
Solution Approach 1:
The patent extracts the authentication information from the replaceable component and relocates it to the printer host. This extraction eliminates the vulnerability where counterfeit components could read and copy authentication data, thereby preventing the generation of improper settings that would result from unauthorized access to verification information.
Data Source
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AI summary
An example replaceable printer component includes a communication engine. The communication engine indicates to a host an operation to be performed by the host. The replaceable printer component also includes a sensor engine to measure a property affected by the operation. The replaceable printer component includes a verification engine to determine whether the host performed the operation based on the measurement of the property.