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An ink delivery system for an inkjet printing device has an ink cartridge, and a remote ink reservoir for containing a supply of ink. An air purge chamber is provided in flow communication between the reservoir and the cartridge. The air purge chamber includes a vent with a plug of hydrophobic mater

An ink delivery system for an inkjet printing device has an ink cartridge, and a remote ink reservoir for containing a supply of ink. An air purge chamber is provided in flow communication between the reservoir and the cartridge. The air purge chamber includes a vent with a plug of hydrophobic material in the vent, and an outlet to the cartridge. The outlet communicates with a check valve leading to the cartridge. A screen of hydrophilic material is provided in the conduit, with a system for evacuating ink from the system to the reservoir when the printing device is not in use.

대표청구항 ▼

1. An ink delivery system comprising:an ink cartridge; an ink supply item remote from said ink cartridge, said ink supply item including an ink reservoir for containing a supply of ink; an air purge chamber in flow communication between said reservoir and said cartridge, said air purge chamber inclu

1. An ink delivery system comprising:an ink cartridge; an ink supply item remote from said ink cartridge, said ink supply item including an ink reservoir for containing a supply of ink; an air purge chamber in flow communication between said reservoir and said cartridge, said air purge chamber including a vent with a plug of porous polytretrafluoroetylene in said vent, and an outlet in fluid flow communication with said cartridge, said outlet including a check valve; and a conduit connecting said air purge chamber and said reservoir in fluid flow communication, for delivering ink from said reservoir to said air purge chamber.