Image Forming Apparatus Blockchain Error Control
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Solution Overview
Problem
Existing image forming apparatuses lack effective control mechanisms to prevent the registration of failed print products as normal information during printing errors, which can lead to document falsification and abuse.
Innovation Solution
An image forming apparatus that cooperates with a management service and a blockchain service, where printing is stopped and an error process is performed if an error occurs during document printing, ensuring that new information is not registered in the blockchain service unless printing is completed successfully, thereby preventing the registration of failed print products as normal information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If printing continues without error checking, then productivity is maintained, but document integrity deteriorates due to potential falsification from failed print products being registered
Solution Approach 1:
The system performs preliminary error detection during the printing process by monitoring job status and detecting errors before the printing completes. This allows the system to prevent registration of failed print products while maintaining efficient processing of successful prints, resolving the contradiction between document integrity and printing efficiency
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring printing job status and using error detection results to control the registration process. When errors are detected, the system feedback prevents blockchain registration, ensuring document integrity while allowing continuous operation for successful prints, thus maintaining productivity
2Reliability
If error detection and stopping mechanisms are implemented, then document integrity is improved, but device complexity increases due to additional control logic
Solution Approach 1:
The system uses an intermediary error detection mechanism that sits between the printing process and the blockchain registration. This intermediary layer monitors printing status and selectively allows or blocks registration based on error detection results, providing document integrity protection without requiring complex integration into the core printing or blockchain systems
Solution Approach 2:
The error detection and control logic is extracted as a separate functional component that independently monitors printing jobs and controls registration access. This modular approach adds reliability through dedicated error handling while minimizing the increase in overall device complexity by keeping the control logic separate and reusable
Data Source
AI summary
In an image forming apparatus that cooperates with a management service and a blockchain service, the management service receiving a document via a network and storing the document, and the blockchain service managing information on the document in block units, defining a relation between each of a plurality of blocks and blocks before and/or after the block, and managing the plurality of blocks using a plurality of nodes. In a case where an error occurs during printing of the document, new information to be registered in response to completion of the printing of the document is not registered in the blockchain service, the printing is stopped, and an error process is performed.