Generated Data File Cleanup After External Storage

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Solution Overview

Problem

Existing image reading apparatuses and scanners leave unnecessary electronic data in external storage after scanning or transmission cancellation, leading to inefficiencies in document management due to the need for manual file checking and deletion.

Innovation Solution

A data file generation apparatus that includes circuitry to generate data files, write identification information as deletion candidates, and automatically delete these files from external storage when successfully stored, using a data file generation method and non-transitory computer-executable medium to manage and delete files efficiently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If data files are stored in external storage area after successful writing, then data retention is improved, but unnecessary files accumulate in external storage

Engineering Contradiction:
Improvedata retentionVSAvoidnumber of unnecessary files
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent applies preliminary action by writing deletion candidate information to the external storage area before the actual data file writing is complete. This allows the system to proactively identify and delete unnecessary files later, preventing accumulation of unwanted data while maintaining successful transfers.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements discarding and recovering by systematically identifying data files as deletion candidates after successful external storage, then deleting these unnecessary files in subsequent operations. This ensures that temporary or intermediate files are discarded while important data is retained.

Inventive Principle:
Principle #34Discarding and recovering

2Ease of operation

If manual checking and deletion of files is required, then storage management control is improved, but document management efficiency deteriorates

Engineering Contradiction:
Improvestorage management controlVSAvoiddocument management efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The patent applies self-service by enabling the system to automatically identify deletion candidate files and delete them without requiring manual user intervention. The apparatus autonomously manages its own storage by tracking which files have been successfully externalized and removing those unnecessary files, thereby improving document management efficiency while maintaining storage control.

Inventive Principle:
Principle #25Self-service

3Extent of automation

If deletion candidate information is written to external storage area, then automatic file identification is improved, but external storage space is consumed

Engineering Contradiction:
Improvefile identification automationVSAvoidexternal storage space
Core Design Contradiction:
Extent of automationVSArea of stationary object

Solution Approach 1:

The patent applies copying by writing only deletion candidate information (metadata or identifiers) to the external storage area rather than duplicating the actual data files. This minimal information copying enables automatic file identification and deletion while consuming negligible external storage space, resolving the contradiction between automation extent and storage space consumption.

Inventive Principle:
Principle #26Copying

Data Source

PatentUS12411806B2Control of deleting unnecessary data files after storing generated data files in external storage area
Publication Date: 2025.09.09 PFU LTD
  • US12411806B2 patent drawing
  • US12411806B2 patent drawing
  • US12411806B2 patent drawing

AI summary

A data file generation apparatus includes circuitry. The circuitry generates a data file. The circuitry writes the data file to an external storage area that is external to the data file generation apparatus. The circuitry writes identification information of the data file to the external storage area as deletion candidate information indicating a candidate for a file to be deleted. The circuitry deletes the deletion candidate information when the data file is successfully stored in the external storage area.