Supply Unit Authentication via Vendor Server Verification
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Solution Overview
Problem
Users of image forming apparatuses are limited in their ability to select and use high-quality supply units from third-party vendors, as existing methods restrict the use of un-proper products, thereby reducing user choice and flexibility.
Innovation Solution
An image forming apparatus that includes a judger to identify whether a supply unit is a reproduced product, an accessor to connect with a vendor's server for authentication, and a controller to permit or limit print operations based on registration status, allowing the use of un-proper products from third-party vendors if authenticated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authentication methods are implemented to identify proper products, then product quality is ensured, but user choice and flexibility are reduced
Solution Approach 1:
The authentication system is segmented into multiple independent components: a first authentication unit for initial verification, a second authentication unit for alternative verification, and a registration unit for storing authentication results. This segmentation allows the system to try multiple authentication methods without requiring all methods to be successful, thereby maintaining product quality while increasing user choice.
Solution Approach 2:
The authentication system dynamically adapts based on registration status. When a reproduced product is first detected, the system registers it and stores authentication results. Subsequent authentication attempts use this registration information, making the system more flexible for authenticated third-party products while maintaining strict verification for unregistered products. This dynamic behavior resolves the contradiction between reliability and adaptability.
2Reliability
If strict authentication is applied to all supply units, then quality control is improved, but product availability and user freedom are reduced
Solution Approach 1:
The system performs preliminary authentication when a reproduced product is first detected and registers it in advance. The authentication result is stored in the registration unit, so subsequent uses of the same supply unit do not require repeated strict authentication. This preliminary action ensures quality control while improving product availability and ease of operation for authenticated products.
Solution Approach 2:
The system creates a copy of the authentication result and stores it in the registration unit. This copied authentication information is then used for subsequent verification, eliminating the need for repeated strict authentication processes. This allows authenticated third-party products to be used freely while maintaining quality control through the initial authentication copy.
3Measurement precision
If multiple authentication units are used to verify reproduced products, then authentication accuracy is improved, but system complexity increases
Solution Approach 1:
The first authentication unit, second authentication unit, and registration unit are merged into a single integrated authentication system within the image forming apparatus. This merging allows multiple authentication methods to work together synergistically, improving authentication accuracy while avoiding the complexity of completely separate systems. The units share common resources and coordinate their operations.
Solution Approach 2:
The registration unit acts as an intermediary between the first authentication unit and the second authentication unit. It stores authentication results and provides this information to subsequent authentication attempts, reducing the complexity of direct interaction between multiple authentication units. This intermediary role streamlines the system architecture while maintaining high authentication accuracy.
Data Source
AI summary
An image forming apparatus comprises an image former that prints target data on a sheet, a first judger that judges a supply unit that is replaceably loaded thereon and has a memory storing identification information uniquely given to the supply unit and information about a plurality of vendors providing the supply unit, is whether or not a reproduced product, an accessor that accesses a server owned by a vendor supplying the supply unit according to the information about the vendors providing the supply unit, which is stored in the memory of the supply unit, if the first judger judges that the supply unit is a reproduced product, a second judger that judges whether or not the identification information stored in the memory of the supply unit is registered in the server owned by the vendor supplying the supply unit, which is accessed by the accessor. Print operations performed by the image former are limited if the second judger judges that the identification information is not registered in the server, meanwhile, print operations performed by the image former are permitted if the second judger judges that the identification information is registered in the server.