Image Erasing Apparatus Security Control via Recognition Code Detection

The patent applies local quality by differentiating erase processing based on document security levels. High-security documents are identified through recognition codes and subjected to restricted or no erasure, while low-security documents undergo full erase processing. This allows the system to maintain high productivity for ordinary documents while ensuring information security for sensitive documents.

The patent applies local quality by implementing differential preservation strategies based on document security classification. Scan results from high-security documents are either not stored or are stored with encryption and access controls, while scan results from low-security documents can be preserved for error recovery. This selective approach maintains reliability for non-sensitive operations while protecting confidential information.

The patent applies universality by making the recognition code detection mechanism applicable to all documents processed by the system. The same scanning and detection infrastructure used for basic document processing is leveraged to detect security classification codes, eliminating the need for separate dedicated security detection hardware. This multi-functional approach enhances security control while minimizing additional device complexity.