Process of printing with serial printhead

US5429441A · kind A · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Harald Schulz · Kammeltal, DE
• Friedrich-Wilhelm Drees · Berlin, DE

Key dates

• Filing date: Nov 23, 1993
• Grant date: Jul 4, 1995
• Expiry date: Nov 23, 2013

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N2201/0468
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A process for recording information on a recording substrate, in which a print head with number (a) of printing elements moves back and forth over print positions, one print line at a time. Partial numbers of printing elements form subgroups in accordance with predetermined formations specific to the print lines. These subgroups are allocated to the print positions of a print line and are formed by at least partly differing printing elements. The individual printing elements of the respective subgroup are selectively controlled at the print positions in accordance with print data to produce a print pattern line. On completion of a subsequent print pattern line, the predetermined formation for a subsequent print line conforms, at least on the continuation side, to the predetermined formation of the preceding print line. Stripes caused by line continuation errors or ink ribbon structure errors are distributed throughout the printed image so as to be vertically offset. In contrast to uniform structures, structures which are distributed in this way can barely be discerned by the human eye.