Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1987-06-01
1988-03-08
Hartary, Joseph W.
Recorders
Markers and/or driving means therefor
With ink supply to marker
346 11, G01D 1516
Patent
active
047301970
ABSTRACT:
An improved drop-on-demand ink jet print head is formed of a plurality of superposed metal plates that are diffusion bonded into a unit. A plurality of superposed metal plates are diffusion bonded into a unit. Punched and/or etched holes form ink passages that include manifolds that supply ink chambers through restrictors and exit orifices that supply ink to nozzles for ejection as droplets. Crosstalk among nozzles is minimized by the use of a compliant manifold plate and a relief slot in an adjacent nozzle plate so as to be coextensive with its associated manifold. The restrictors and the nozzles are substantially equal in diameter and length. The print head produces droplets up to 80 micrometers in diameter at frequencies up to 7 KHz with little variation in droplet size and velocity as a function of frequency.
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Cordery Robert A.
Raman Gopalan
Hartary Joseph W.
Pitchenik David E.
Pitney Bowes Inc.
Scolnick Melvin J.
Vrahotes Peter
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