Printer Ink Level Detection via Color Change and Electronic Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing printing apparatuses lack effective methods to inform users of the remaining ink amount in a discernible manner, especially in low-light conditions, leading to difficulties in accurately filling ink storage units and potentially exceeding fill limits.
Innovation Solution
A printing apparatus equipped with a liquid amount detection unit and a control unit that notifies the user of the remaining ink amount through a display or notification system, allowing for real-time monitoring and control of the filling process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a viewing window is used to display remaining ink amount, then the ink amount can be recognized, but the operability deteriorates in dark locations and the user cannot accurately discern the fill level
Solution Approach 1:
The patent employs color-changing indicators that change color based on the ink level in the storage unit. This allows the ink amount to be visually indicated through color changes rather than requiring the user to directly view the liquid level, solving the problem of poor visibility in dark locations while maintaining accurate information display.
Solution Approach 2:
The patent replaces the mechanical/optical viewing window system with an electronic notification system that includes a sensor to detect ink level and a notification unit (such as a display or audible signal) to communicate the information. This substitution eliminates the need for direct visual inspection through a viewing window, improving operability in low-light conditions.
2Loss of information
If a viewing window is used to display remaining ink amount, then the ink amount can be recognized, but the reliability deteriorates because the user may not notice when ink has reached the fill limit
Solution Approach 1:
The patent implements a feedback mechanism where the notification unit actively communicates the ink level status to the user. When the ink reaches the fill limit, the system provides explicit feedback through notifications, ensuring the user is reliably informed of the state without requiring continuous visual inspection.
Solution Approach 2:
The system performs self-monitoring of the ink level through sensors and automatically provides notifications when thresholds are reached. This eliminates the burden on the user to continuously check the ink level, improving reliability of information delivery while the system serves itself.
Data Source
AI summary
A printing apparatus includes a liquid storage unit that stores liquid to be supplied to a printhead, which performs printing by discharging the liquid, a liquid amount detection unit that detects an amount of the liquid stored in the liquid storage unit, and a control unit that performs control to, in response to a start of liquid filling into the liquid storage unit, provide notification of the amount of the liquid detected by the liquid amount detection unit.