The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 1979
Filed:
Apr. 05, 1978
Joachim Heinzl, Munich, DE;
Erich Kattner, Munich, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A piezoelectrically operated printer head for an ink-jet printing unit characterized by the printer head having a body with a plurality of printing jets arranged in a pattern at a printing location, each printing jet comprising an individual passage extending through the body from an orifice at the printing location to a source of printing liquid. Each passage has a first segment of its length surrounded by a cylindrical piezoelectric drive so that a drop of the printing liquid is ejected from the jet by a piezoelectric contraction of the drive element and each of the passages has a second segment of its length spacing the first segment from the respective orifice. The second segments of the passages are disposed in the body of the printer head to extend away from the pattern of orifices at the printing location in a radiating pattern without any kinks therein.