Ink Cartridge Magnetic Sensor Mounting Speed Detection
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Solution Overview
Problem
The rapid mounting of ink cartridges in recording devices can cause sudden deceleration, leading to large changes in ink pressure, which can result in ink leakage and undesirable ink ejection characteristics in recording heads.
Innovation Solution
Incorporating a magnetic sensor and attitude maintaining structure to detect the movement of the ink cartridge and maintain the magnetic pole direction, allowing for accurate measurement of the mounting process and ensuring desirable ejection characteristics by forcibly ejecting ink if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the ink cartridge is mounted quickly or abruptly, then the mounting speed is improved, but the ink pressure changes suddenly causing ink leakage and poor ejection characteristics
Solution Approach 1:
The system performs preliminary detection of the mounting speed using a magnetic sensor before the ink cartridge is fully mounted. When rapid mounting is detected, the system proactively executes a purge operation to remove air from the ink supply path, preventing ink leakage and restoring proper ejection characteristics before printing resumes.
Solution Approach 2:
The magnetic sensor provides real-time feedback on the mounting speed by detecting the movement of the ink cartridge. This feedback is used to determine whether rapid mounting has occurred, triggering appropriate corrective actions such as purge operations to maintain reliable ejection characteristics.
2Productivity
If the ink cartridge is mounted quickly, then the productivity is improved, but ink flows into the subsidiary tank causing pressure head difference to go beyond desirable range
Solution Approach 1:
The system detects rapid mounting conditions before they cause harmful effects. When the magnetic sensor detects quick mounting, the system proactively executes a purge operation to equalize pressure and remove air from the ink supply path, preventing excessive ink flow into the subsidiary tank and maintaining proper pressure head difference for reliable printing.
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 configuration enables the recording head to maintain desirable ejection characteristics by accurately judging the mounting speed of the ink cartridge and performing corrective actions to prevent ink leakage and ensure consistent printing performance.
Implementation Method 1
the detecting unit includes a magnetic sensor configured to detect magnetic flux generated by the magnet
Data Source
Figure 1
Figure 2(A)~2(B)
Figure 3(A)~3(B)
AI summary
An ink cartridge (40) includes; an ink bag (42); a moving body (62) configured to move relative to the case (41); a single detecting unit (66); and a storing unit (125). The detecting unit (66) is configured to output a signal corresponding to a position of the moving body (62) relative to the case (41). The storing unit stores time length data indicative of a length of time to be taken by a value of the signal outputted from the detecting unit to change from a first prescribed value to a second prescribed value different from the first prescribed value. It is possible to allow a recording head to maintain desirable ejection characteristics even when the ink cartridge is mounted to a recording device at a high speed.