Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1975-10-28
1977-06-28
Hartary, Joseph W.
Recorders
Markers and/or driving means therefor
With ink supply to marker
310 83, G01D 1516
Patent
active
040329291
ABSTRACT:
A high density linear array ink jet assembly is provided wherein a multiple chamber unit comprises a chamber housing and at least one flexible diaphragm spanning and sealing the chambers from each other and forming one wall of each chamber. A plurality of actuators for deforming the diaphragm are secured to the diaphragm at each chamber. The actuators are independently activated to deform the diaphragm for a particular chamber thereby decreasing the volume thereof to create a pressure on liquid ink therein. In one embodiment, a pair of elongated coextensive ribbon members are located opposite each other and are separated by a plurality of spaced ferrite walls secured thereto. At least one of the ribbon members comprises a deformable laminate of two layers of different material which have significantly different strain characteristics in the presence of a magnetic field. The ribbon members and each pair of ferrite walls form a deformable chamber whereby a plurality of deformable chambers are formed. A multiple ink jet nozzle unit is secured to the front of the chamber unit, and a reservoir unit is secured to the rear of the chamber unit. A reservoir inlet orifice and an ink droplet outlet orifice are associated with each chamber. A magnetic field is selectively applied to the deformable wall of various selected chambers to deform the wall thereof and thereby decrease the volume of the various chambers to express ink droplets from their outlet orifices onto a recording medium in accordance with an image to be produced. Other embodiments of multiple chamber units are disclosed which are of similar nature utilizing ribbon deformation by magnetostriction or by a piezoelectric member.
REFERENCES:
patent: 3452360 (1969-06-01), Williamson
patent: 3747120 (1973-07-01), Stemme
Fischbeck Kenneth H.
Vernon Richard H.
Hartary Joseph W.
Raizes Sheldon F.
Xerox Corporation
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