Patent ID: 6019459
Filing Date: 2000-02-01
Classification: B41J

Abstract:
An ink-jet pen comprising:a pen body having a plurality of compartments includinga first compartment for retaining free-ink therein,a second compartment, at least partially superjacent said first compartment and coupled thereto, for retaining free-ink and gas therein, anda third compartment, at least partially superjacent said first compartment and coupled thereto, for retaining an ink accumulator within said third compartment;means for transferring ink into said pen body from an ink supply;an ink accumulator including a dual capillarity ink accumulator mounted substantially within said third compartment and having a first capillarity member having a first capillary head and a second capillarity member having a second capillary head such that said first capillary head is greater than said second capillary head, and said first capillarity member is fluidically coupled to said first compartment and wherein said first capillary head is greater than a capillary head generated by the ink supply; anda printhead, having ink-jet nozzles, fluidically coupled to said first compartment below said second compartment and said third compartment.