EP 0126649 A3 19850821 - FLUID JET PRINT HEAD
Title (en)
FLUID JET PRINT HEAD
Publication
Application
Priority
- US 49615983 A 19830519
- US 49632983 A 19830519
Abstract (en)
[origin: EP0126649A2] A fluid jet print head for producing a plurality of jet drop streams of fluid includes a manifold (10) defining an elongated cavity (14) and an orifice plate (20) defining a plurality of orifices (22), arranged in at least one row, which communicate with the cavity (14). A transducer arrangement, including a piezoelectric means (27), is mounted in the cavity and is spaced from the orifice plate so as to define a fluid reservoir therebetween. The transducer arrangement further includes acoustic isolation material (28) which surrounds the piezoelectric means and supports the piezoelectric means in the cavity. The transducer means, when electrically excited, produces pressure waves of substantially uniform wave front which travel through the fluid in the reservoir toward the orifice plate and cause break up into jet drop streams of fluid flowing through the orifices (22). The piezoelectric means may include an elongated transducer (27) which has a plurality of slots extending alternately from opposite sides of the transducer partially therethrough. Each of the slots is substantially perpendicular to the row of orifices (22). The slots prevent wave propagation along the transducer.
IPC 1-7
IPC 8 full level
B41J 2/025 (2006.01)
CPC (source: EP)
B41J 2/025 (2013.01)
Citation (search report)
- GB 2094233 A 19820915 - EXXON RESEARCH ENGINEERING CO
- US 4303927 A 19811201 - TSAO SHERMAN H
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0126649 A2 19841128; EP 0126649 A3 19850821; EP 0126649 B1 19880413; DE 3470398 D1 19880519
DOCDB simple family (application)
EP 84303437 A 19840521; DE 3470398 T 19840521