Hirotake Nakamura

Ink jet recording apparatus and maintenance method

Air purge device for ink jet recording apparatus

Ink cartridge, set of ink cartridges, and ink cartridge determination system

Print head capping device

Ink supply devices

System for purging an ink jet recorder

Liquid-Droplet Ejecting Apparatus

Package for recording head unit, method for packaging the same, and combination of package and recording head unit of ink-jet recording apparatus

Ink cartridges having signal blocking portions

Ink-jet printing unit having plate-stacked type printing head and method of producing the same