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US 4,751,532 AGranted
Thermal electrostatic ink-jet recording head
AssigneeFuji Xerox Co., Ltd.
InventorsYoshihiko Fujimura, Koichi Saito, Eiichi Akutsu, Nanao Inoue, Kiyoshi Horie
Life of this patent
Estimating the term…
Abstract
An ink-jet recording head wherein thermal energy and an electroelastic field are applied to ink held between two plate members to cause the ink to be jetted out from an orifice defined by the plate members wherein there is provided, on the orifice-side end portion of each of the plate members adjacent the orifice, a first area readily wettable by the ink and a second area away from the orifice which is less wettable by the ink.
Claims13
A thermal electrostatic ink-jet recording head comprising:
- (a) two opposing plate members spaced apart at a predetermined distance to provide a slit adapted to contain an ink material therebetween, each of the plate members having an inner wall and an orifice side end portion, the surface of the respective inner walls and end portions defining an ink-jet orifice;
- (b) means on one of said inner walls for selectively heating said ink material;
- and
- (c) means on one of said inner walls for applying an electrostatic field to said ink material;
- and
- (d) means for providing on each of said end portions beyond a predetermined distance from said ink-jet orifice a first area having a lower critical surface tension and a second area thereof within said predetermined distance and adjacent said ink-jet orifice having a higher critical surface tension.
3 more elements
Dependencies are inferred from the claim text.