Browse Prior Art Database

Magnetic Printer Head

IP.com Disclosure Number: IPCOM000060032D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08

Publishing Venue

IBM

Related People

Authors:
Lean, EG Wang, SS [+details]

Abstract

Magnetic printers have recently attracted considerable interest. The key features are a solid mechanical magnetic drum and a magnetic head (with more than 2000 individual heads) using perpendicular recording. The design, construction, and manufacture of the heads with drivers are essential aspects of magnetic printers. A magnetic printer head is shown in Fig. 1A wherein an array of magnetic coils with high permeability cores having a rectangular surface is used to energize different magnetic dots. A flux-closing pole or shunt with a large area is positioned right next to the dot pattern, as shown in Fig. 1A, to close the magnetic flux from the recording pole through the magnetic medium. Fig. 1B shows a magnetic dot drum made of magnetic pins which is rotated between the magnetic coils and the magnetic recording tape.