Image Forming Apparatus Removable Media Storage Error Handling

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Solution Overview

Problem

Image data storage on removable media in image forming apparatuses can be interrupted due to memory full errors, leading to incomplete data storage and unnecessary data being left on the medium, which is not easily handled by users.

Innovation Solution

An image forming apparatus with a scanning unit, memory unit, connection unit, memory control unit, and deleting unit that detects memory full errors and automatically deletes partial image data stored on the removable medium, allowing users to continue scanning without restarting and ensuring complete data storage by transferring remaining data to the apparatus's memory.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If image data is stored on removable medium during scanning, then storage convenience is improved, but memory full error occurs causing incomplete data storage

Engineering Contradiction:
Improvestorage convenienceVSAvoiddata storage completeness
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system checks available storage space before initiating the scan-to-removable-medium process. By performing this preliminary check, the system prevents memory full errors and ensures that the entire scanning process can complete successfully without interruption, thus maintaining both convenience and reliability.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system provides feedback to the user about the storage status and available space on the removable medium before scanning begins. This feedback mechanism allows the user to understand the storage capacity and prevents incomplete data storage by alerting them to potential memory full errors before they occur.

Inventive Principle:
Principle #23Feedback

2Productivity

If scanning continues after memory full error, then productivity is improved, but unnecessary incomplete data is left on removable medium

Engineering Contradiction:
Improvescanning efficiencyVSAvoidunnecessary data retention
Core Design Contradiction:
ProductivityVSLoss of information

Solution Approach 1:

The system extracts and identifies incomplete image data files on the removable medium that were created during the interrupted scanning process. By separating these incomplete files from complete ones, the system enables selective deletion of only the unnecessary incomplete data while preserving valid scanned images, thus maintaining productivity without data loss.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system automatically discards incomplete image data files that result from memory full errors during scanning. By identifying and removing these corrupted files, the system recovers storage space and prevents data clutter, allowing users to continue scanning operations without manual intervention while maintaining data integrity.

Inventive Principle:
Principle #34Discarding and recovering

3Reliability

If user manually manages storage space, then data storage completeness is improved, but ease of operation deteriorates

Engineering Contradiction:
Improvedata storage completenessVSAvoiduser operation complexity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system performs automatic storage space management by monitoring available space on the removable medium and preventing scan operations that would result in memory full errors. This self-service mechanism ensures data storage completeness without requiring users to manually manage storage space, thereby maintaining ease of operation while ensuring reliability.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP2380341B1Image forming apparatus, control method for image forming apparatus, and storage medium
Publication Date: 2020.12.09 CANON KK
  • EP2380341B1 patent drawingFigure 1
  • EP2380341B1 patent drawingFigure 2
  • EP2380341B1 patent drawingFigure 3

AI summary

An image forming apparatus stores image data generated from a document scanned by a scanner on a removable medium. When storage on the removable medium is not completed, part of the image data that has been stored by that time is deleted from the removable medium.