Ink jet filtered-chamber print head

US4514743A · kind A · utility

Assignee

• Nixdorf Computer AG · DE

Inventors

• Rolf Roschlein · Paderborn, DE
• Heinz Schulte · Paderborn, DE

Key dates

• Filing date: Apr 9, 1984
• Grant date: Apr 30, 1985
• Expiry date: Apr 9, 2004

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J2/17563
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

In a piezoelectrically-driven printing head for a dot-matrix ink printer, the ink canals (11) have a funnel-shaped enlargement (19) connected through a filter (18) to a common ink reservoir (16). The enlargements (19) increase the ink current cross-section in the area of the filter (18) and thereby increase the ink flow rate.