Image Forming Apparatus Data Protection via Sensor-Based Preliminary Action
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Solution Overview
Problem
Image forming apparatuses face data corruption and storage device damage due to power shutdowns and vibrations, particularly caused by human error or movement, which existing technologies fail to adequately prevent.
Innovation Solution
An image forming apparatus with a storage device that proactively writes important and protection data at predetermined timings based on detection information from sensors monitoring power changes, vibration, and human presence, using a detection information acquirer and protection processor to predict and mitigate potential data loss or damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power storage capacity of the power supply circuit is increased to ensure data writing during power shutdown, then data protection is improved, but cost increases significantly
Solution Approach 1:
The system performs preliminary actions by detecting signs of impending power shutdown (vibration, tilt changes, operational status) and proactively completing data writing before the actual power loss occurs. This allows the use of smaller power storage capacity while still ensuring data integrity, as the critical data writing is completed in advance rather than relying on large-capacity power storage to sustain operation during extended power loss.
2Reliability
If data writing is stopped to prevent corruption when power shutdown is detected, then data integrity is protected, but productivity decreases due to missed writing opportunities
Solution Approach 1:
Instead of stopping data writing when shutdown is detected, the system performs preliminary actions by anticipating shutdown events through sensor detection and completing the writing process in advance. This allows continuous writing operation under normal conditions while ensuring data integrity is maintained by finishing critical writes before power loss, thus avoiding both corruption and productivity loss.
Solution Approach 2:
The system uses feedback from sensors (vibration detectors, tilt sensors, operational status monitors) to detect early signs of impending power shutdown. This feedback mechanism allows the system to adjust its writing strategy dynamically - continuing writes under normal conditions and completing critical writes before shutdown, rather than采用ing a static stop-or-continue approach.
3Quantity of substance
If the HDD is used for large capacity storage, then storage capacity is improved, but vulnerability to vibration and power shutdown increases
Solution Approach 1:
The system performs preliminary protective actions by detecting vibration and tilt changes that precede potential damage events. When such conditions are detected, the system proactively completes data writing and shuts down the HDD before the vibration or power loss can cause corruption or physical damage, thus enabling the use of high-capacity HDDs in environments where vibration or accidental power shutdown may occur.
Data Source
AI summary
An image forming apparatus including a storage device storing, from among data to be retained when the power is shut off, either or both of important protection data, being a type determined to be important in advance, and protection data, to be retained when the power is shut off other than the important protection data, at respective predetermined timings. A detection information acquirer receives detection information from a sensor detecting at least one of: a change in either or both of direction and tilt, vibration, a predetermined operation, an approaching person, a person entering a room, and a person entering a predetermined area. A protection processor starts processing for writing either or both of the important protection data and the protection data into the storage device in response to the detection information received by the detection information acquirer, at timings different from the predetermined timings.