Arrangement for heating the ink in the write head of an ink-jet printer

US5208611A · kind A · utility

Assignee

• Mannesmann AG · DE

Inventors

• Andreas Kappel · Höhenkirchen-Siegertsbrunn, DE
• Rudolf Probst · Munich, DE

Key dates

• Filing date: Jun 14, 1991
• Grant date: May 4, 1993
• Expiry date: Jun 14, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J2202/11
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A heating device of a write head based on layer technology for an ink jet printer is furnished as a heating resistor (15) in the form of a heating conduit meander directly from an electrically conductive thin film, disposed in the empty spaces on a substrate, and deposited on the base oxide for furnishing the thermal converter and the conductor paths (5, 6). The empty spaces are thereby created by a spacing and a group-like combination and a gathering of the conductor paths (5, 6), wherein part sections of the heating resistors (15) are embedded in the empty spaces. The heating resistor (15) is part of a resistance measurement bridge and is employed simultaneously as a heat source and as a temperature sensor based on processing and evaluation of its electrical resistance values at different points in time.