Printer Ink Cartridge Warning Control via Periodic Action
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Solution Overview
Problem
Existing inkjet printers display warnings for expired ink cartridges too frequently, causing user annoyance, as they currently alert users every time the power is turned on or the energy-saving mode is canceled, even when the ink is still usable.
Innovation Solution
Implementing a system where the printer determines the recommended replacement period and usable period for each ink cartridge, displaying a warning only when the recommended limit has passed and not before, and adjusting the warning cycle to minimize user disturbance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the printer displays a warning every time power is activated or energy-saving mode is canceled when the ink cartridge is almost expired, then the user is timely notified of the expiration, but the user feels bothered by frequent alerts
Solution Approach 1:
The system transitions from continuous warning display at every power activation to periodic warning display based on elapsed time since the last warning. The control unit determines whether to display a warning by checking if a predetermined period has elapsed since the last warning was displayed, thereby reducing alert frequency while maintaining timely notification.
2Reliability
If the printer displays warnings frequently to ensure users are notified of ink cartridge expiration, then the reliability of notification is improved, but the frequency of warnings causes user annoyance
Solution Approach 1:
The control unit implements periodic warning display by checking whether a predetermined period has elapsed since the last warning. This limits the frequency of warnings to once per period, preventing user annoyance while ensuring reliable notification of ink cartridge expiration status.
3Loss of information
If the printer notifies users at every power activation when ink is almost expired, then complete information is provided to users, but the notification frequency becomes excessive and bothersome
Solution Approach 1:
The control unit reduces notification frequency by implementing a periodic display mechanism that checks whether a predetermined period has elapsed since the last warning. This maintains essential information delivery while avoiding excessive notifications that would bother users.
Data Source
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AI summary
A printer includes an expendable supply, a detector that detects at least one of a power-on operation, a resume from an energy-saving mode and a new installation of an expendable supply, a determiner that determines whether or not a recommended limit of the expendable supply has passed, a warning generator that generates a warning for notifying that a usable limit of the expendable supply will come soon if the recommended limit has already passed, and a memory storage that stores a warning cycle and a last warning generation. When the recommended limit has passed and the power-on operation, the resume or the new installation is detected, the warning generator generates a warning [1] when the last warning generation is not stored in the memory storage, or [2] when the last warning generation is stored in the memory storage and the warning cycle has elapsed from the last warning generation.