EP 0280864 B1 19910814 - NEEDLE PRINT HEAD
Title (en)
NEEDLE PRINT HEAD
Publication
Application
Priority
DE 3706730 A 19870302
Abstract (en)
[origin: US4838714A] In a needle print head including a plurality of hinged armature magnets arranged in a ring about a needle guide with each of the magnets including a U-shaped magnet yoke, a magnet coil on one of the U-legs of such yoke and a hinged armature arranged at least nearly radially, the hinged armature at its radially inner end is connected to a print needle and is biased by spring force to a rest position away from the yoke at which it engages a stop, each hinged armature at its radially outer end being pivotally supported by a cylindrical pin for rotation about the axis of the pin, and a return spring engaging the hinged armature at a point between the print needle and the radially inner yoke leg.
IPC 1-7
IPC 8 full level
B41J 2/275 (2006.01); B41J 2/28 (2006.01); H01F 7/14 (2006.01)
CPC (source: EP US)
B41J 2/275 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0280864 A2 19880907; EP 0280864 A3 19890104; EP 0280864 B1 19910814; AT E66184 T1 19910815; DE 3706730 A1 19880915; DE 3706730 C2 19900405; DE 3864161 D1 19910919; ES 2024557 B3 19920301; JP S63233849 A 19880929; US 4838714 A 19890613
DOCDB simple family (application)
EP 88100870 A 19880121; AT 88100870 T 19880121; DE 3706730 A 19870302; DE 3864161 T 19880121; ES 88100870 T 19880121; JP 4946288 A 19880302; US 15683388 A 19880217