Imaging Supply Authentication via Dynamic Data
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Solution Overview
Problem
Printers are limited in their ability to use non-supported imaging supplies for printing, as they rely on pre-defined lists of compatible supplies, restricting flexibility and compatibility with new or customized imaging materials.
Innovation Solution
Incorporating data and digital signatures on imaging supplies that allow them to dynamically update compatible supply lists and interact with printers, enabling the use of non-listed supplies by authenticating and modifying consumables management data, even if they differ in properties or quantities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If printers use pre-defined lists of supported imaging supplies, then printer reliability and consistent performance are improved, but adaptability and versatility are worsened
Solution Approach 1:
The patent applies dynamics by transitioning from a static, pre-defined list of supported imaging supplies to a dynamic authentication system. The printer controller now performs real-time authentication of imaging supplies using digital signatures and cryptographic verification, allowing the system to adaptively accept or reject supplies based on their authenticating information rather than relying on a fixed list. This enables the printer to reliably use both listed and unlisted genuine supplies.
Solution Approach 2:
The patent changes the authentication parameter from simple model matching (comparing supply model numbers against a supported list) to cryptographic verification (verifying digital signatures and authenticating information). This parameter change allows the system to identify genuine supplies through their cryptographic credentials rather than just their model identifiers, enabling compatibility with new or customized genuine supplies that may not be on the pre-defined list.
2Ease of manufacture
If printers restrict usage to pre-defined supported supplies only, then manufacturing and operation simplicity are improved, but market flexibility and customization are worsened
Solution Approach 1:
The patent applies self-service by enabling imaging supplies to automatically provide their own authentication credentials. Each genuine imaging supply contains embedded authenticating information (digital signatures, cryptographic keys) that allow it to prove its genuineness to the printer without requiring manual registration or complex setup. The supply essentially authenticates itself, allowing manufacturers to create customized or new supplies that the printer will automatically recognize as genuine.
Solution Approach 2:
The patent creates a universal authentication framework that works across different imaging supply types and manufacturers. By using standardized cryptographic authentication mechanisms, the system can verify genuine supplies from any manufacturer that implements the authentication protocol, rather than requiring separate handling for each supply type. This universal approach maintains operational simplicity while greatly expanding market flexibility.
3Reliability
If printers implement strict authentication of imaging supplies, then security and reliability are improved, but device complexity and authentication failure risk are worsened
Solution Approach 1:
The patent uses cryptographic protocols and digital signature verification as an intermediary mechanism between the imaging supply and the printer controller. Rather than requiring complex direct verification of supply authenticity, the cryptographic system acts as a trusted intermediary that provides mathematical proof of genuineness. This intermediary layer simplifies the authentication process while maintaining high security standards.
Solution Approach 2:
The patent replaces mechanical or manual authentication methods (such as physical inspection, model number verification, or manual registration) with cryptographic verification. The digital signature and authenticating information provide automated, reliable authentication that is more secure than mechanical methods while reducing operational complexity. The cryptographic system performs verification automatically without requiring complex mechanical authentication mechanisms.
Data Source
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AI summary
Imaging supplies are disclosed in some examples. An apparatus includes an imaging supply including a first memory and a second memory, the first memory storing an indication of at least one of unsigned data, signed data, and limited or no data being stored at the second memory, when at least one of unsigned and signed data is present on the second memory, the second memory storing consumables management data, when the imaging supply is coupled to a printer and consumables management data are stored on the second memory, the consumables management data to cause the printer to dynamically define at least one of a yield, a low point, and an out point of the imaging supply.