Ink printer head composed of individual ink printer modules

Details Ink printer head composed of individual ink printer modules Ink printer head composed of individual ink printer modules

1995-06-23

1997-09-16

Hartary, Joseph W.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 2045

Patent

active

056685831

ABSTRACT:
An ink printer head of individual ink printer modules operating according to the edge-shooter principle equipped with piezoelectric actuators is provided for use in printers for postage meter machines and correspondingly has a large number of nozzles arranged in columns. For this purpose, a nozzle module, composed of a nozzle plate and two adapter plates arranged at opposite sides thereof, is disposed between ink printer modules that are constructed mirror-symmetrically relative to one another and are equipped with piezoactuators applied on both sides. The adapter plates are provided with openings for ink guidance and with recesses providing for the free space needed for piezoactuators. The openings in the adapter plates are matched, first, to the nozzle dimensions and, second, to the dimensions of the connecting channels to the ink chambers and are aligned with both the nozzles and the connecting channels. Identical etching masks can be used for a number of plates due to the mirror-symmetrical structure. A reduction in the manufacturing outlay while preserving the requiring printing precision is achieved. A high degree of repetition is achieved by employing identical ink printer modules and ink paths of approximately identical length is also achieved. The nozzle apertures can be given a circular cross-section without difficulty.

REFERENCES:
patent: 4330787 (1982-05-01), Sato et al.
patent: 4769654 (1988-09-01), Tanaka et al.

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