Direct electrostatic printing method and apparatus

US6361148B1 · kind B1 · utility

Assignee

• Array Printers AB · SE

Inventors

• Tomas Jonsson · Hagfors, SE
• Anders Ingelhag · Göteborg, SE
• Göran Nybom · Skutskär, SE
• Henrik Gustavsson · Mölndal, SE
• Krister Uvnäs · Södra Sandby, SE
• Lennart Sjostedt · Tomelilla, SE
• Lennart Thålin · Stockholm, SE

Key dates

• Filing date: Jun 15, 1999
• Grant date: Mar 26, 2002
• Expiry date: Jun 15, 2019

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G2217/0025
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A direct electrostatic printing device and method print an image to an information carrier with improved alignment between printed part images from two or more print stations. The improved alignment is based on a basic mechanical alignment with a basic accuracy between the print stations which is improved by an electronic alignment of the corresponding bitmaps. The electronic alignment is made possible by the capability of at least one print station to print at least one additional dot in relation to the corresponding bitmap. The minimum number of additional dots being dependent on the attained basic accuracy of the basic mechanical alignment.