Patent · US Expired

Microplanar ink-jet printing head

US4599628A · kind A · utility

39Cited by

3References

14Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Michael Doring · Hamburg, DE
Horst Bentin · Hamburg, DE
Herman F. L. Maier · Hamburg, DE

Key dates

Filing date	Nov 19, 1984
Grant date	Jul 8, 1986
Priority date	—
Expiry date	Nov 19, 2004

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J2002/14387
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A plate, through which several ink ducts extend, merges at a flat side of the plate into nozzles and at the opposite side into separated pressure chambers. The printing head has a diaphragm plate common to all pressure chambers, connected to a one-piece piezoceramic plate, which has an embossed part overlying each pressure chamber. Film electrodes are provided on each embossed part, extending above and beyond the area of the pressure chamber. Electrical connections are made to the film electrodes outside the area above the pressure chambers so that the mass of the electrical connections does not affect the resonant frequency.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.