Optical Sensor Mode Switching for Ink Cartridge Detection
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Solution Overview
Problem
Ink-jet image recording apparatuses face issues with the deterioration of optical sensors due to prolonged use, especially when a cartridge with a low ink level is removed and not replaced promptly, leading to continuous operation and accelerated degradation.
Innovation Solution
A cartridge-information detecting device with a controller that switches the optical sensor's operational mode from constant to intermittent after a predetermined time, reducing prolonged usage and maintaining effective detection of cartridge status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical sensor operates in constant mode to continuously detect cartridge information, then the detection reliability is improved, but the sensor deterioration accelerates
Solution Approach 1:
The optical sensor operates in intermittent mode after a predetermined time period, switching between active detection and standby states. This periodic operation reduces cumulative exposure time and extends sensor lifespan while maintaining adequate detection capability for cartridge status monitoring
2Duration of action of stationary object
If the optical sensor operates intermittently to reduce deterioration, then the sensor lifespan is extended, but the detection continuity is reduced
Solution Approach 1:
The system performs critical cartridge detection operations during the initial predetermined time period when the sensor operates in constant mode. This preliminary continuous detection ensures reliable capture of cartridge mounting/removal events before transitioning to intermittent operation
3Measurement precision
If the optical sensor operates constantly to detect cartridge mounting/removal events, then the detection precision is improved, but the energy consumption increases
Solution Approach 1:
The optical sensor switches from constant operation to intermittent operation after a predetermined time period, reducing energy consumption by keeping the sensor in standby mode during periods when cartridge status changes are less likely to occur
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution prevents the deterioration of optical sensors while ensuring continuous and intermittent detection of cartridge information, ensuring proper operation and extending the sensor's lifespan.
Implementation Method 1
an optical sensor for detecting information about a cartridge
Data Source
AI summary
A cartridge-information detecting device including: an optical sensor for detecting information about a cartridge which stores ink and is removably mounted on a cartridge mount, the information including specific information indicating that the cartridge is in a state of being mounted on or removed from the cartridge mount; and a controller including a timer which measures time and configured to execute a control for changing an operational mode of the optical sensor, wherein the controller permits the optical sensor to operate in a constant operational mode in which the information about the cartridge is constantly detected through the optical sensor until the timer has measured a predetermined time from a timing at which the detection of information about the cartridge becomes to be allowed, and wherein the controller permits the optical sensor to operate in an intermittent operational mode in which only the specific information is intermittently detected through the optical sensor, after the predetermined time has passed.