Wire-type printing head

Details Wire-type printing head Wire-type printing head

1987-11-17

1989-04-11

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 310

Patent

active

048200654

ABSTRACT:
A wire-type print head comprises an armature to which a rear end of a printing wire is fixed, a core having its forward end adjacent to a rear surface of the armature, a leaf spring having a first end fixed near a permanent magnet and a second end fixed to the armature, and an auxiliary core positioned between the permanent magnet and the core, and having a forward end adjacent to the rear surface of the armature. An electric current is made to flow through a coil wound on the core for generating a magnetic flux through the core in a direction to cancel the magnetic flux due to the permanent magnet. When the coil is not energized the armature is attracted toward the core to resiliently deform the leaf spring. When the coil is energized the armature is released and moved forward by the action of the leaf spring. The rear surface of the armature is kept in contact with the front end of the auxiliary core so that the front end of the auxiliary core forms a fulcrum point for swinging of the armature.

REFERENCES:
patent: 4348120 (1982-09-01), Isobe et al.
patent: 4368353 (1983-01-01), Ando et al.
patent: 4377348 (1983-03-01), Isobe et al.
patent: 4447166 (1984-05-01), Ochiai et al.
patent: 4511269 (1985-04-01), Takahashi et al.
patent: 4523867 (1985-06-01), Berrey et al.
patent: 4552471 (1985-11-01), Sogel et al.
patent: 4568207 (1986-02-01), Haro et al.
patent: 4583871 (1986-04-01), Ochiai et al.
patent: 4597680 (1986-07-01), Noriyoe et al.
patent: 4600323 (1986-07-01), Harada et al.
patent: 4696589 (1987-09-01), Okundo et al.
IBM Tech. Disc. Bulletin, "Magnetic Compensation and Cooling Technique for a Stored Energy Pint Actuator", Hamma et al., vol. 24, No. 3, Aug. 1981, pp. 1702-1704.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-662826