Browse Prior Art Database

Print Wire for Wire Matrix Printer

IP.com Disclosure Number: IPCOM000044999D
Original Publication Date: 1983-Jan-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 2 page(s) / 23K

Publishing Venue

IBM

Related People

Travieso, R: AUTHOR

Abstract

Conventional tungsten carbide wires used in wire matrix printers are extremely hard but very brittle and thus susceptible to fracturing. The figure shows a cross-section of a new wire which consists of a core made from a relatively ductile material encased with tungsten carbide. The core may consist of a tungsten filament having a size between .001 and .004 inch in diameter. The case will vary in size to yield a total diameter of .011 to .014 inch.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Print Wire for Wire Matrix Printer

Conventional tungsten carbide wires used in wire matrix printers are extremely hard but very brittle and thus susceptible to fracturing. The figure shows a cross-section of a new wire which consists of a core made from a relatively ductile material encased with tungsten carbide. The core may consist of a tungsten filament having a size between .001 and .004 inch in diameter. The case will vary in size to yield a total diameter of .011 to .014 inch.

The new wire may be produced by extruding the tungsten carbide-cobalt mixture around the tungsten wire and subsequently sintering and grinding to size the resulting material. To provide better wetting between the wire and the mixture, the wire may be coated or plated with cobalt or other suitable binder materials.

The relatively ductile core will provide a wire which is tougher and more resistant to fracture than conventional print wires.

1

Page 2 of 2

2

[This page contains 1 picture or other non-text object]