Ink Cartridge Light Control for Position Detection Accuracy
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Solution Overview
Problem
The existing ink cartridge position detection methods in imaging devices face misjudgment issues due to manufacturing errors in light sources, leading to incorrect positioning and increased misjudgment rates, as the light emitting quantities of ink cartridges cannot be strictly kept equivalent, causing inconsistent light reception and incorrect position detection.
Innovation Solution
A method for controlling light emission in ink cartridges, where a control unit on the cartridge receives signals from the imaging device, initiates a light-on delay timing, and controls the light emitting unit to emit light only when the delay threshold value is reached, ensuring that the light amount during facing position detection is greater than during adjacent position detection, thereby avoiding misjudgment caused by manufacturing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If light sources are used for ink cartridge position detection, then position detection function is achieved, but manufacturing errors cause light emitting quantity inconsistency leading to misjudgment
Solution Approach 1:
The patent introduces a delay time parameter for light emission control. The control unit delays light emission for a predetermined time period after receiving a light emission instruction, ensuring that light is emitted only during the facing position detection phase and not during adjacent position detection, thereby eliminating misjudgment caused by manufacturing errors in light source intensity
Solution Approach 2:
The system uses feedback from the light receiver to determine ink cartridge position. The control unit receives light emission instructions, applies delay timing, and controls light emission based on the detection phase (facing or adjacent), creating a closed-loop control system that compensates for light intensity variations and prevents misjudgment
2Speed
If light emission is controlled immediately upon receiving instruction, then detection speed is improved, but adjacent ink cartridge light interference causes misjudgment
Solution Approach 1:
The control unit performs preliminary action by setting a delay time for light emission. When a light emission instruction is received, the control unit delays light emission for a predetermined time period before actually emitting light, ensuring that light is emitted only when the ink cartridge is in the facing position, not during adjacent position detection
Solution Approach 2:
The system implements periodic light emission control where light is emitted only during specific time periods (facing position detection) and not during other periods (adjacent position detection). The control unit uses delay timing to create this periodic emission pattern, emitting light at appropriate intervals to match the detection phases
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 approach reduces the misjudgment rate of ink cartridge positions by ensuring consistent light emission based on predetermined delay thresholds, ensuring accurate position detection without modifying the imaging device, only requiring modifications to the ink cartridges.
Implementation Method 1
a light emitting unit for emitting light to a light receiving unit disposed on the main body of the imaging device
Data Source
Figure 1a~1b
Figure 1c~2a
Figure 2b~3a
AI summary
The present invention provides a method for controlling light emission of an ink cartridge, a control unit, a circuit board, an ink cartridge and an imaging device, to decrease misjudgment rate of the imaging device. The control method includes: receiving and identifying a light emitting control instruction from the imaging device main body; starting a light-on delay timing when identifying the light emitting control instruction is a light-on instruction; controlling the light emitting unit of the ink cartridge to stop emitting light when identifying the light emitting control instruction is a light-off instruction; controlling the light emitting unit to emit light when detecting a timing value of the light-on delay timing reaches a delay threshold value. The delay threshold value is greater than the adjacent detection time period, which is a time interval for an adjacent position detection of the ink cartridge to be detected by the main body of the imaging device, and is less than the facing detection time period, which is a time interval for a facing position detection of the ink cartridge to be detected by the main body of the imaging device. The present invention avoids misjudgment problem of unable to pass position detection due to light amount inconsistent caused by manufacturing errors of the light emitting unit, when setting a light-on delay timing.