Liquid Ejecting Head Asymmetric Chamber Design for Uniform Flow

The liquid ejecting head is divided into multiple independent common liquid chambers, each serving a specific nozzle sequence. This segmentation allows each chamber to be optimized independently, with supply ports and aperture parts positioned to balance fluid resistance within each chamber while maintaining overall system performance.

The patent employs asymmetric positioning of supply ports and aperture parts within each common liquid chamber. By strategically placing these components at different positions (e.g., supply port at one end, aperture at the other end or at specific distances from ends), the design creates controlled fluid resistance gradients that prevent air bubble accumulation while ensuring uniform liquid distribution to nozzles.

Each common liquid chamber is designed with locally optimized supply port and aperture part positions tailored to its specific nozzle sequence requirements. This allows different chambers to have different configurations (e.g., some with supply ports at ends, others with apertures at specific positions) to achieve uniform liquid distribution and consistent ejection characteristics across all nozzles.

The patent systematically varies the positions of supply ports and aperture parts across different common liquid chambers. By changing parameters such as the distance of aperture parts from chamber ends and the relative positions of supply ports, the design achieves optimal balance between liquid flow rate and fluid resistance uniformity, preventing both air bubble retention and ejection amount deviation.