Image Forming Apparatus Error Prevention Display Logic
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Solution Overview
Problem
Image forming apparatuses often fail to effectively prevent the reoccurrence of operating errors, as users may inadvertently restart jobs without noticing the displayed error solutions, leading to repeated issues due to hidden error messages after resolving the initial problem.
Innovation Solution
Incorporating an error sensor and a recovery sensor that detect operating errors and their resolution, with a display processor to continuously show operation guides on the display portion, ensuring users are informed on how to prevent reoccurrence even after restarting the job.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the error solution is hidden after the user restarts the job, then the display is cleared and ready for new operations, but the user may not have noticed the error location and instructions, leading to reoccurrence of the same error
Solution Approach 1:
The system performs preliminary action by displaying the operation guide before the user restarts the job, ensuring the user has the necessary information to prevent error reoccurrence. The guide is displayed during the error state and maintained until the user acknowledges it, proactively preventing the problem before it can recur.
Solution Approach 2:
The system implements feedback by continuously displaying the operation guide until the user acknowledges it through specific actions (pressing OK button or performing the instructed operation). This feedback loop ensures the user receives and processes the error prevention information before the display is cleared for new operations.
2Reliability
If the operation guide is displayed continuously after error recovery, then user education is enhanced and error reoccurrence is reduced, but the display may interfere with new operations and increase information overload
Solution Approach 1:
The display behavior is made dynamic by changing the display content based on the operational state. During error conditions, the operation guide is displayed; after recovery, it continues to be displayed until acknowledgment; after acknowledgment, the display transitions to normal operation mode. This dynamic adaptation resolves the contradiction by providing information when needed and clearing it when appropriate.
Solution Approach 2:
The system uses periodic action by checking for user acknowledgment at specific intervals (when OK button is pressed or when the instructed operation is detected). This periodic checking mechanism allows the system to maintain the operation guide display during the error recovery period while automatically transitioning to normal display management once the user has been educated about the error prevention.
3Loss of information
If the system detects error recovery and displays prevention guides, then user awareness of error causes is improved, but the system complexity increases due to additional sensors and processing
Solution Approach 1:
The error sensor and recovery sensor utilize the existing detection capabilities of the image forming apparatus. The same sensors that detect operational states are repurposed to detect error conditions and recovery states. This multi-functionality approach minimizes additional hardware complexity while achieving the goal of error information retention and user education.
Solution Approach 2:
The system performs self-service by using its own existing detection mechanisms to identify error and recovery states, rather than requiring entirely new sensing systems. The control unit processes the detection results and manages the display content autonomously, reducing the need for external or additional complex subsystems.
Data Source
AI summary
An image forming apparatus includes: a display portion; an error sensor that detects an operating error; a recovery sensor that detects the recovery from an operating error; and a display processor that makes the display portion display a notice of an operating error when the error sensor detects the operating error and that makes the display portion display an operation guide for preventing the reoccurrence of the same operating error when the recovery sensor detects the recovery from the operating error.