Inkjet Recording Apparatus Conveyor Belt Opening Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Inkjet recording apparatuses face challenges in preventing nozzle clogging due to ink drying, as conventional flushing methods may not effectively synchronize ink ejection with paper positioning, leading to potential image quality issues and productivity losses.
Innovation Solution
The apparatus incorporates a conveyor belt with irregularly positioned opening groups and sensors to control the timing of ink ejection and paper placement, ensuring that flushing occurs at optimal times to prevent clogging and maintain image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flushing is performed by periodically ejecting ink from the nozzle, then nozzle clogging due to ink drying is reduced or prevented, but synchronization between ink ejection and paper positioning may be compromised leading to image quality issues
Solution Approach 1:
The system employs detection sensors to monitor the position of recording media and opening groups on the conveyor belt, providing feedback to the control unit. This feedback mechanism enables real-time adjustment of ink ejection timing to precisely synchronize flushing operations with the absence of recording media, preventing nozzle clogging while avoiding ink deposition on media that would compromise image quality.
Solution Approach 2:
The control unit determines in advance whether to perform flushing based on detected positions of recording media and opening groups. By making preliminary decisions about flushing timing before ink ejection occurs, the system ensures that flushing is performed only when the nozzle is not facing recording media, thereby preventing both clogging and image quality degradation.
2Reliability
If conventional flushing methods are used without precise synchronization control, then nozzle clogging prevention is achieved, but productivity is reduced due to potential image quality issues and rework
Solution Approach 1:
Detection sensors continuously monitor the positions of recording media and opening groups, providing real-time feedback to the control unit. This enables the system to dynamically adjust flushing operations based on actual positions, ensuring that flushing is performed only when appropriate, thereby maintaining nozzle reliability without compromising printing productivity through unnecessary interruptions or rework.
Solution Approach 2:
The system transitions from static, predetermined flushing schedules to dynamic, position-based flushing control. The control unit continuously adapts flushing timing based on real-time detection of recording media and opening group positions, optimizing the balance between nozzle maintenance and printing productivity by performing flushing only when the nozzle is not facing recording media.
3Ease of operation
If ink ejection timing is not precisely controlled relative to paper positioning, then nozzle maintenance is simplified, but image quality deteriorates due to misplaced ink deposition
Solution Approach 1:
The detection sensors provide continuous feedback on the positions of recording media and opening groups, enabling the control unit to automatically determine the optimal timing for flushing operations. This feedback-based control maintains simple operation for users while ensuring precise ink ejection timing that prevents misplaced ink deposition and preserves image quality.
Solution Approach 2:
The control unit performs preliminary determination of flushing timing based on detected positions before ink ejection occurs. This preliminary action ensures that flushing is timed correctly relative to paper positioning, maintaining both operational simplicity and image quality by preventing misplaced ink deposition through advance timing calculation.
Data Source
AI summary
The controller of an inkjet recording apparatus supplies a recording medium onto the conveyor belt with a pair of registration rollers based on a detection result of the trailing edge of the recording medium by a first detection sensor and a detection result of an opening by a second detection sensor. The controller determines whether the recording medium is being placed on the conveyor belt coinciding with the opening that is moved due to the traveling of the conveyor belt, and based on the determination result, the controller controls the recording head to execute flushing and the pair of registration rollers to supply a subsequent recording medium onto the conveyor belt.