EP 0472407 A1 19920226 - Printing wire driving apparatus.
Title (en)
Printing wire driving apparatus.
Title (de)
Antriebsvorrichtung für Druckdrähte.
Title (fr)
Dispositif d'entraînement pour aiguilles d'impression.
Publication
Application
Priority
JP 21939390 A 19900821
Abstract (en)
In a printing wire driving apparatus wherein a plurality of printing wires mounted on a carriage of a printer are driven in accordance with printing data, there are provided with a voltage regulator (10) including a transistor chopper (10a) for periodically chopping input voltage, and a smoothing circuit (10b) for smoothing the output voltage of the transistor chopper, a plurality of printing wire driving circuits connected in parallel across output lines of the smoothing circuit (106), each of the printing wire driving circuits including a printing wire operating coil (18), a driving circuit (19) connected in series with the operating coil and a transistor (10) which are connected in series across the output lines. There is also provided a system controller (30) for controlling the operation of the transistor chopper (10a), and for controlling a printing signal generator (31) which generates electric signals adapted to control the printing wire driving circuits.
IPC 1-7
IPC 8 full level
B41J 2/30 (2006.01)
CPC (source: EP)
B41J 2/30 (2013.01)
Citation (search report)
- [Y] US 4637742 A 19870120 - SAKAI KIYOHARU [JP]
- [Y] EP 0242635 A2 19871028 - IBM [US]
- [A] EP 0306437 A2 19890308 - MANNESMANN AG [DE]
- [A] US 4162858 A 19790731 - BRADENBURG KLAUS [DE]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0472407 A1 19920226; EP 0472407 B1 19951220; DE 69115598 D1 19960201; DE 69115598 T2 19960801
DOCDB simple family (application)
EP 91307665 A 19910820; DE 69115598 T 19910820