Inkjet Recording Machine Suction Control for Satellite Drop Management
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Solution Overview
Problem
Inkjet recording machines face issues with satellite drops degrading printing quality and causing device contamination due to increased production when higher resolution printing is performed for specific colors or images, leading to a higher number of ink drops per unit area.
Innovation Solution
An inkjet recording machine with a control unit that adjusts the suction power based on the resolution of the print image, reducing the negative pressure for areas with higher resolution to minimize the landing range of satellite drops and prevent contamination, while maintaining overall suction capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of ink drops per unit area is increased to achieve high-resolution printing, then the printing resolution is improved, but the number of satellite drops produced increases causing degradation in print quality and device contamination
Solution Approach 1:
The suction fan operates at variable speeds depending on the printing resolution. When high-resolution printing is detected (increased number of ink drops per unit area), the suction fan speed is reduced to minimize satellite drop dispersal. This dynamic adjustment resolves the contradiction by adapting the suction power to the actual printing conditions.
Solution Approach 2:
The invention changes the operational parameters of the suction fan based on the printing resolution settings. By detecting the number of ink drops per unit area and adjusting the fan speed accordingly, the system optimizes the balance between maintaining recording medium suction and minimizing satellite drop contamination.
2Object-generated harmful factors
If the suction power is increased to prevent satellite drops from drifting, then the contamination is reduced, but the recording medium may not be properly conveyed
Solution Approach 1:
The suction fan speed is dynamically adjusted based on printing resolution. During high-resolution printing, the fan operates at reduced speed to minimize satellite drop dispersal. During normal printing, it operates at standard speed to ensure proper recording medium conveyance. This dynamic control resolves the contradiction between contamination prevention and productivity.
Solution Approach 2:
The operational parameters of the suction fan are changed according to the printing mode. The control unit detects printing resolution and adjusts the fan speed parameter accordingly, ensuring optimal performance for each printing condition while balancing contamination control and conveyance efficiency.
3Manufacturing precision
If the suction power is reduced to minimize satellite drop dispersal, then the print quality is maintained, but the recording medium may not be properly sucked to the conveyance route
Solution Approach 1:
The suction fan operates at variable speeds based on printing conditions. During high-resolution printing, the fan speed is reduced to minimize satellite drop dispersal and maintain print quality. During normal printing, the fan operates at full speed to ensure reliable recording medium suction and conveyance.
Solution Approach 2:
The suction power parameter is adjusted according to the printing resolution. The control unit detects when high-resolution printing is active and reduces the fan speed parameter accordingly, maintaining the balance between print quality and reliable recording medium handling.
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 effectively prevents the degradation of print quality and reduces device contamination by controlling satellite drop dispersal, ensuring consistent suction performance across varying resolution settings.
Implementation Method 1
a suction unit configured to generate a negative pressure for sucking the recording medium to the conveyance route
Data Source
AI summary
A control unit is configured to form a print image on a recording medium by ejecting ink drops from nozzles of an ink head to the recording medium being conveyed on a conveyance route and sucked to the conveyance route by a negative pressure generated by a suction unit. The control unit is configured to control a level of suction power of sucking the recording medium to the conveyance route by the negative pressure in accordance with a level of a resolution of the print image in at least one of a main scanning direction or a sub scanning direction.