Droplet generator for microdroplets, in particular nozzle...

Details Droplet generator for microdroplets, in particular nozzle... Droplet generator for microdroplets, in particular nozzle...

2005-11-29

2005-11-29

Meier, Stephen D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S071000

Reexamination Certificate

active

06969156

ABSTRACT:
A droplet generator for microdroplets (6), in particular a nozzle head for inkjet printers, having groups of piezo electrically actuated bending converters (1) disposed in a casing (11), wherein the bending converters (1) are disposed at a distance from each other and are guided in recesses separated by wall thicknesses, wherein liquid longitudinal channels (12) run below the flexible fingers (5) and having a liquid chamber (13) with a nozzle (7), can maintain a high liquid flow, in the case of sufficiently thick chamber walls, wherein the chamber walls do not allow a deformation to occur having in each case an edge bead (15) run around an opening (14) of the liquid chamber (13), wherein the edge bead (15) serves to limit a stroke of a respective one of the flexible fingers (5) and wherein a shaft (16) having at least the width of the flexible finger (5) and the height level of the base plate (1a) follows the opening (14).

REFERENCES:
patent: 6254223 (2001-07-01), Kim et al.
patent: 6382780 (2002-05-01), Watanabe et al.
patent: 6500354 (2002-12-01), Lee et al.
patent: 6783214 (2004-08-01), Sakuma
patent: 3317082 (1984-11-01), None
patent: 0713773 (1996-05-01), None
patent: 0993951 (2000-04-01), None

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