Liquid Discharging System Nozzle Arrangement for Printing Resolution
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Solution Overview
Problem
Inkjet printers operating in monochrome mode print images faster but do not necessarily improve image quality due to nozzle arrangements that do not effectively enhance printing resolution.
Innovation Solution
A liquid discharging system with a head and controller system, where two nozzle rows are aligned intersecting directions, allowing for controlled discharge of ink from overlapping nozzles to improve image quality by distributing image data to optimize droplet placement and resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple nozzle rows are arranged to overlap in the main scanning direction, then printing speed in monochrome mode is improved, but image quality does not necessarily improve
Solution Approach 1:
The patent transitions from a single nozzle row to multiple nozzle rows arranged in the sub-scanning direction (perpendicular dimension), allowing simultaneous discharge of ink droplets at different positions. This dimensional expansion enables both increased printing speed through parallel discharge and improved image quality through strategic droplet placement from multiple nozzles
Solution Approach 2:
The image data is divided and distributed to multiple nozzle rows, with each nozzle row responsible for discharging ink droplets corresponding to specific image data pieces. This segmentation allows the printing system to maintain high speed by processing multiple data segments simultaneously while ensuring high quality through precise control of each segment's droplet placement
2Manufacturing precision
If image data is distributed to multiple nozzles, then resolution is improved, but complexity of controlling the head increases
Solution Approach 1:
Multiple nozzle rows are configured to discharge the same type of ink, making them universally interchangeable for different ink types. The controller system universally distributes image data to appropriate nozzles based on position and timing, simplifying control logic while achieving high resolution through coordinated multi-nozzle operation
Data Source
AI summary
A liquid discharging system includes a head and a controller system. The head has a first nozzle row including a first nozzle and a second nozzle row including a second nozzle. The nozzles in the first and second nozzle rows are aligned in a first direction, and the first nozzle row and the second nozzle row are arrayed along a second direction, which intersects with the first direction. The controller system is configured to control the head to discharge liquid of the same type from the first nozzle and the second nozzle at a recording medium when the first nozzle and the second nozzle are each located at a same position with respect to the recording medium while the head moves in the second direction relatively to the recording medium.