Wire-dot print head

Details Wire-dot print head Wire-dot print head

1990-10-10

1992-08-11

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 228

Patent

active

051373807

ABSTRACT:
A wire-dot print head has an armature having a tip to which a print wire is secured, a core provided in confrontation with the armature, a plate spring which is supported in a cantilever fashion and to which the armature is fixed, a permanent magnet assembly generating a magnetic flux to cause the armature to be attracted toward the core overcoming the resilient force of the plate spring, and a coil wound on the core to generate a magnetic flux upon energization to cancel the magnetic flux from the permanent magnet assembly, thereby to release the armature. The permanent magnet assembly includes a first permanent magnet of the samarium-cobalt type, and a second permanent magnet of the neodyminum-iron-boron type or the lanthanoid-iron-boron type.

REFERENCES:
patent: 4348120 (1982-09-01), Isobe et al.
patent: 4513496 (1985-04-01), Wang
patent: 4582437 (1986-04-01), Wang
patent: 4714904 (1987-12-01), Willems
patent: 4869605 (1989-09-01), Kikuchi et al.
patent: 4995744 (1991-02-01), Goldowsky et al.
Patent Abstracts of Japan, vol. 12, nr. 78 (M-675) [2925], Mar. 11, 1988; & JP-A-62 218 144 (Fujitsu Ltd) Sep. 25, 1987.

Affiliated with

Also associated with

Rating

Wire-dot print head does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wire-dot print head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wire-dot print head will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-342768