The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 1989
Filed:
Mar. 09, 1988
Sven G Stenudd, Lidingo, SE;
Facit Aktiebolag, Sundbyberg, SE;
Abstract
The invention relates to a method in printheads (1) with a plurality of print elements (4) arranged movable in relation to each other and a moving mechanism (7, 9, 11, 12, 14) with magnetic field-responsive forces for moving selectable print elements to print or inactive positions. With utilization of the method the forces with which selected print elements are moved in appropriate cases to their print positions can be changed in coordination for a plurality of print elements. In accordance with the invention this is achieved by a magnetic field change coordinated for several print elements. The invention also relates to a printhead (1) with a plurality of first electromagnet means (9, L1 L24) for moving selectable print elements (4) and also a second electromagnet means (LB) common to a plurality of print elements, for coordinated change of the forces for a plurality of print elements with which the print elements can be moved to their print positions. A method and a printhead in accordance with the invention are primarily intended for matrix printers.