Head for impact type of dot line printer

Details Head for impact type of dot line printer Head for impact type of dot line printer

1983-10-07

1985-03-05

Sewell, Paul T.

Printing

Selective or progressive

Bed and platen machines

101 9348, 400121, B41J 310

Patent

active

045023824

ABSTRACT:
A head for an impact type of dot line printer comprising an array of printer wires mounted on leaf springs for forming dots on a printing paper, selectively controlled for impact on the paper by signals applied to corresponding magnetic flux circuit paths comprising coils formed on coil cores and permanent magnets, and having an improved form of construction whereby each printer wire is controlled by an independent magnetic flux circuit path and with pairs of coil cores being mounted on separate magnetic flux path members. The configuration enables a high density of printer wires to be achieved, with elimination of magnetic interference between adjacent magnetic flux circuit paths leading to uniform printing density.

REFERENCES:
patent: 3941051 (1976-03-01), Barrus et al.
patent: 4044668 (1977-08-01), Barrus et al.
patent: 4258623 (1981-03-01), Barrus et al.
patent: 4351235 (1982-09-01), Bringhurst
patent: 4357867 (1982-11-01), Wagner et al.
patent: 4386563 (1983-06-01), Farb
patent: 4441421 (1984-10-01), Khorsand
patent: 4461207 (1984-07-01), Helinski

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