04475113 is referenced by 60 patents and cites 9 patents.

A drop-on-demand ink jet printing method and apparatus in which the print head has an ink cavity which is filled with ink, and which has a nozzle designed so that ink does not flow out under static conditions. An electromechanical transducer is selectively energized in response to print data signals so that, when energized by an electrical signal, the transducer produces a pressure wave in the ink cavity sufficient to eject one ink drop from the nozzle for each signal above a threshold value. The nozzle is a strongly convergent nozzle and the ink has a viscosity up to 100 centipoise. In the preferred embodiment, the nozzle is formed by anisotropic etching in a silicon substrate. An array of print heads produces a line of high-resolution printing as the print head array is moved across a print medium.

Title
Drop-on-demand method and apparatus using converging nozzles and high viscosity fluids
Application Number
274989
Publication Number
4475113
Application Date
March 4, 1983
Publication Date
October 2, 1984
Inventor
Frank E Talke
Morgan Hill
CA, US
Ross N Mills
Morgan Hill
CA, US
Francis C Lee
San Jose
CA, US
Agent
Otto Schmid Jr
Assignee
International Business Machines
NY, US
IPC
G01D 15/18
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