Thermal ink jet printer having printhead transducers with multil

Details Thermal ink jet printer having printhead transducers with multil Thermal ink jet printer having printhead transducers with multil

1988-11-25

1989-12-12

Shaw, Clifford C.

Recorders

Markers and/or driving means therefor

With ink supply to marker

346 76PH, 219216, G01D 1516, G01D 1510, H05B 1510

Patent

active

048870986

ABSTRACT:
A thermal ink jet printer utilizes a printhead whose electrical connections to the heating elements used to expel the ink droplets has been modified to reduce the effects of parasitic resistance of the common return when a number of resistors are simultaneously addressed. The common return, formed in the same substrate level as the resistor elements, has been modified by forming and interconnecting a second common return. The resistor is connected to an input source by a low resistance connection which is formed to cross-over, or under, the second common.

REFERENCES:
patent: 4463359 (1984-07-01), Ayata et al.
patent: 4506272 (1985-03-01), Arai
patent: 4520373 (1985-05-01), Ayata
patent: 4601777 (1986-07-01), Hawkins et al.
patent: 4602261 (1986-07-01), Matsuda et al.
patent: 4791440 (1988-12-01), Eldridge

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