Line-Type Inkjet Recording Apparatus Staggered Ejection Timing

The patent applies periodic action by dividing ejection openings into multiple groups and controlling actuators to eject ink at different timings within a printing cycle. Each group ejects ink at a specific timing, creating a periodic ejection pattern that prevents fluid crosstalk while maintaining productivity. The actuator controller supplies ejection signals at different timings to different groups, ensuring that not all nozzles eject simultaneously, thus eliminating standing waves in common ink chambers.

The patent segments the ejection openings into multiple groups (first group, second group, etc.) and assigns different ejection timings to each group. This segmentation allows the system to maintain high productivity by keeping multiple nozzles active while preventing fluid crosstalk by staggering their operation. The segmentation is implemented through the actuator controller which manages the timing of each group independently.

The patent introduces dynamics by varying the ejection timing for each ejection opening within a printing cycle. Instead of using a constant timing for all nozzles, the system dynamically adjusts the timing based on the group to which each nozzle belongs. This dynamic timing variation prevents fluid crosstalk and improves print quality while the actuator controller manages the complexity of timing coordination.

The patent changes the timing parameter for ink ejection based on the group classification of ejection openings. Each group is assigned a specific timing within the printing cycle, and this timing parameter is varied across groups to prevent fluid crosstalk. The actuator controller implements these parameter changes by supplying ejection signals at different timings to different groups, improving ink ejection uniformity without excessive complexity.