EP 0156767 A1 19851002 - Wire matrix printer.
Title (en)
Wire matrix printer.
Title (de)
Matrixnadeldrucker.
Title (fr)
Imprimante matricielle à aiguilles.
Publication
Application
Priority
CH 112484 A 19840307
Abstract (en)
[origin: ES8602492A1] The printer has a set of needles (1) attached to a support (2) at one end, each comprising an electrical conductor formed in two symmetrical parts angled in opposite directions relative to the straight line between the two ends of the needle. The needle is connected at opposite ends of the angled central part to opposite poles of a current source (8,9). The needle (1) is acted on by a magnetic field provided by a permanent magnet (7) which exerts a force tending to straighten it when a current is passed through it, to effect printing. - The current source (8,9) pref. comprises a pulse generator (8) coupled to the primary winding of a transformer (9) which has a secondary winding connected across the needle (1).
[origin: ES8602492A1] The printer has a set of needles (1) attached to a support (2) at one end, each comprising an electrical conductor formed in two symmetrical parts angled in opposite directions relative to the straight line between the two ends of the needle. The needle is connected at opposite ends of the angled central part to opposite poles of a current source (8,9). The needle (1) is acted on by a magnetic field provided by a permanent magnet (7) which exerts a force tending to straighten it when a current is passed through it, to effect printing. - The current source (8,9) pref. comprises a pulse generator (8) coupled to the primary winding of a transformer (9) which has a secondary winding connected across the needle (1).
Abstract (fr)
Les agiuilles (1) de cette imprimante sont alimentées par un conducteur électrique (10) associé au secondaire d'un transformateur abaisseur (9) connecté à un générateur d'impulsions de courant (8). L'aiguille 1 étant placée dans le champ magnétique d'un aimant permanent (7), le courant (I) qui traverse l'aiguille engendre des forces qui tendent à ramener cette aiguille sur une ligne droite joignant ses points d'appui et de guidage (2, 3) en dëplaçant l'extrémité libre contre un support d'écriture.
IPC 1-7
IPC 8 full level
B41J 2/295 (2006.01); B41J 2/25 (2006.01); B41J 2/27 (2006.01)
CPC (source: EP KR US)
B41J 1/22 (2013.01 - KR); B41J 2/25 (2013.01 - EP US); B41J 2/27 (2013.01 - EP US); B41J 11/22 (2013.01 - KR)
Citation (search report)
- [XD] GB 1423518 A 19760204 - EMI LTD
- [A] US 3715020 A 19730206 - NORDIN R
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0156767 A1 19851002; EP 0156767 B1 19890104; AT E39646 T1 19890115; AU 3953785 A 19850912; CH 658627 A5 19861128; DE 3567169 D1 19890209; DK 99885 A 19850908; DK 99885 D0 19850305; ES 540946 A0 19851201; ES 8602492 A1 19851201; GR 850553 B 19850705; JP S60206669 A 19851018; KR 850006518 A 19851014; US 4600322 A 19860715; YU 35485 A 19880630
DOCDB simple family (application)
EP 85810084 A 19850301; AT 85810084 T 19850301; AU 3953785 A 19850305; CH 112484 A 19840307; DE 3567169 T 19850301; DK 99885 A 19850305; ES 540946 A 19850305; GR 850100553 A 19850305; JP 4200385 A 19850305; KR 850001337 A 19850304; US 70737485 A 19850301; YU 35485 A 19850306