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:
Aug. 25, 1981
Filed:
Oct. 19, 1979
Applicant:
Inventor:
Donald K Rex, Highland Beach, FL (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
400247 ; 400124 ;
Abstract
A user replaceable printer ribbon shield of simple design is provided for use in high speed matrix printers utilizing continuous forms. The shield is detachably mounted. During printing, the shield prevents outfolds in the forms from catching on the ribbon and prevents ribbon ink from migrating to the forms. It moves with the platen slightly away from the matrix print head when the machine is idle for at least a preset period of time. This causes the ribbon to move away from the ends of the print wires in the matrix print head to keep print wire lubricatng oil from migrating to the ribbon.