Patent · US Expired

Matrix print head

US4010835A · kind A · utility

31Cited by

9References

7Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Blair Robertson Martin · Owego, US
Johann Meier · Schwarzenfeld, DE

Key dates

Filing date	Aug 1, 1975
Grant date	Mar 8, 1977
Priority date	—
Expiry date	Aug 1, 1995

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41J25/304
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A serial matrix printer has a print head mounted to move along a print line. The print head has means to change the relative vertical positions of some of the print wires with respect to the others. A first embodiment uses a pair of wire guides arranged so that one is translatable with respect to the other, thereby altering the relationship of the wires in the one guide with respect to the other, and a second embodiment employs a rotatable guide which positions the wires at angles such that the desired spatial relation between the wires is obtained.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.