Patent · US Expired

System for an electrothermal ink jet print head

US5502471A · kind A · utility

65Cited by

7References

11Claims

0Family size

Assignee

EASTMAN KODAK COMPANY · US

Inventors

Ernst Obermeier · Berlin, DE
Joachim Heinzl · Munich, DE
Peter Krause · Acton, CA
Bernhard Hochwind · Munich, DE
Alfred Zollner · Eitting, DE

Key dates

Filing date	Apr 28, 1993
Grant date	Mar 26, 1996
Priority date	—
Expiry date	Apr 28, 2013

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J2/1632
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

An electrothermal ink jet print head is constructed in layer structure, wherein the expansion direction of the ink vapor bubble is directed opposite to the ink-ejection direction. Each ink channel (16) of the ink jet print head is supplied with ink by flow throttles for a highest degree of effectiveness. For this purpose, a cover plate (1) is furnished with openings (2). The openings (2) join into an ink storage container. The openings (2) are connected with recess openings (25) to the ink channel (16) in the chip (11). Selectively, the recess openings (25) can be furnished in the chip (11) or in the cover plate (1). A method is provided for producing the recess openings (25).

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