Incremental printing of symbolic information – Ink jet – Fluid or fluid source handling means
Patent
1994-10-31
1997-08-19
Le, N.
Incremental printing of symbolic information
Ink jet
Fluid or fluid source handling means
B41J 2175
Patent
active
056593457
ABSTRACT:
Disclosed is a novel multi-chamber ink-jet print cartridge (pen) that is formed of a main body member divided into three sections, a center section, and two side sections. Cover members are attached to this main body section to define three ink chambers. Each ink chamber contains a synthetic foam member that receives a respective one of three primary colored inks. The main body member is molded to be a single unitary part, so that the only ink-to-ink sealing interface between inks of different colors occurs at the interface between the main body member and the printhead. The main body member is formed to have a center ink pipe that extends upwardly into compressive contact with the foam member in the center chamber, and two side ink pipes that extend outwardly in a direction orthogonal to the center ink pipe into compressive contact with the foam held in the side ink chambers. The disclosed multi-chamber pen thus allows for a narrow pen body with a small printhead, yet also provides for a large volume of ink in each of the three ink chambers, without the need for a separate manifold member and the disadvantageous introduction of additional ink-to-ink interfaces.
REFERENCES:
patent: 4771295 (1988-09-01), Baliu et al.
patent: 5448275 (1995-09-01), Fong
patent: 5467118 (1995-11-01), Gragg et al.
patent: 5497178 (1996-03-01), DeFosse et al.
Davis H. Brian
Hewlett--Packard Company
Le N.
Sullivan Kevin B.
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