Piezoelectric operated printer head for ink-operated mosaic printer units

US4158847A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Joachim Heinzl · Munich, DE
• Erich Kattner · Munich, DE

Key dates

• Filing date: Apr 5, 1978
• Grant date: Jun 19, 1979
• Expiry date: Apr 5, 1998

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J2/1429
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

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.