Patent · US Expired

Method of making ink jet print head

US4248823A · kind A · utility

17Cited by

7References

13Claims

0Family size

Assignee

NCR Corporation · US

Inventors

Leonhard Bader · Stadtbergen, DE
Frank Giessner · Augsburg, DE
Ernst Pechinger · Ehingen (Donau), DE
Friedrich B. Rombach · Augsburg, DE
Wilhelm Ruprich · Augsburg, DE
Helmut Weber · Webster, US
Hermann Winter · Marl, DE

Key dates

Filing date	Dec 15, 1978
Grant date	Feb 3, 1981
Priority date	—
Expiry date	Dec 15, 1998

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/767
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A mold having a desired print head shape includes a cover in which a plurality of rods or ductile fibers are attached, the cover being positioned with the rods extending into the mold and to the side opposite the cover. A hardenable synthetic material is introduced through a hole in the cover and after hardening of the material to form the print head, the rods are withdrawn from the mold to leave bores or apertures in the print head which serve as passageways for the droplets of ink.

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