Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1983-03-07
1985-04-09
Hartary, Joseph W.
Recorders
Markers and/or driving means therefor
With ink supply to marker
G01D 1518
Patent
active
045105090
ABSTRACT:
A new nozzle structure is disclosed for an ink ejection head of an electric field on-demand type ink jet printer. A plurality of circular nozzles and first electrodes integral with the nozzles are arranged along the widthwise direction (X direction) and feed direction (Y direction) of a sheet of paper. A plurality of lead terminals are individually connected to the arrays of the first electrodes each of which extends in the Y direction. Second electrodes are located at the rear of the first electrodes and individually connected to the arrays of the first electrode each of which extends in the X direction. A third or counter electrode is positioned in front of the first electrodes and at the back of the sheet. Each of the second electrodes is mounted on a nozzle plate or a nozzle support. The first electrodes are supplied with voltage pulses corresponding to image data, the second electrodes for printing with a voltage opposite in polarity to the voltage pulses, and the second electrodes for non-printing with a zero voltage or a voltage common in polarity to the voltage pulses sequentially and repeatedly on the time sharing basis. The third electrode is applied with a constant voltage of the opposite polarity to the voltage pulses.
REFERENCES:
patent: 4263601 (1981-04-01), Nishimura
patent: 4333086 (1982-06-01), Ebi
Wicklund H. P.; Nonimpact Printer; IBM TDB, vol. 20, No. 7, Dec. 1977, pp. 2814-2815.
Ebi Yutaka
Furukawa Tatsuya
Horike Masanori
Isayama Takuro
Sekiya Takuro
Alexander David G.
Hartary Joseph W.
Ricoh & Company, Ltd.
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