Thin body ink drop generator

Details Thin body ink drop generator Thin body ink drop generator

1980-12-03

1983-01-25

Schreyer, Stafford D.

Recorders

Record receiver deforming

346140R, 310800, G01D 1518

Patent

active

043706630

ABSTRACT:
A continuous liquid drop generator and a printing system employing it are disclosed. The generator includes a thin cavity which contains liquid under pressure. The liquid is emitted through a nozzle as a liquid column from which drops are formed. The liquid in the cavity is acoustically stimulated by a thin, flexible piezoelectric exciter. Polyvinylidene fluoride (PVF.sub.2) is one piezoelectric material disclosed. The thin body generator includes a transmission plate or block between a backing plate and a nozzle plate. The transmission plate chemically protects the exciter and provides space for an infeed conduit that couples a liquid to the thin cavity. The generator design is especially suited for multiple-nozzle drop generators. One printing system disclosed employs a multiple nozzle generator with each nozzle addressing drops to multiple pixels within a segment of a scan line. Collectively, the drop streams emitted from the multiple nozzles are able to compose a full scan line on a target. The target moves relative to the drop generator.

REFERENCES:
patent: 4005435 (1977-01-01), Lundquist et al.
patent: 4032928 (1977-06-01), White et al.
patent: 4138687 (1979-02-01), Cha et al.
patent: 4296417 (1981-10-01), Markham et al.
patent: 4303927 (1981-12-01), Tsao
U.S. Serial No. 45,045 filed Jun. 4, 1979 by Roger Markham, entitled "Ink Jet Method and Apparatus Using a Thin Film Piezoelectric Excitor for Drop Generation".

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