EP 0502720 A2 19920909 - Dot matrix impact print head device.
Title (en)
Dot matrix impact print head device.
Title (de)
Punktmatrixanschlagdruckkopf.
Title (fr)
Tête d'impression à impact de matrice à points.
Publication
Application
Priority
JP 1919691 U 19910304
Abstract (en)
A dot matrix impact print head device having a plurality of print units. In each of the print units, an end of a support leaf spring (24) supported on a print head body and an end of a drive leaf spring(25) whose another end is connected to a piezoelectric element (5) are joined parallel to each other by a rigid joint (26). The joint is fixed to a proximal end of an arm (22).When the support and drive leaf springs are resiliently deformed, the arm is angularly moved about a pivotal center axis (31) defined by these leaf springs. A line (32) interconnecting the axis (31) and the proximal end of the print wire (7a) extends substantially perpendicularly across the direction of back-and-forth movement of the print wire. When a piezo-electric element (5) is displaced in response to the application of a voltage, an arm (32) is angularly moved through the two leaf springs (25, 26) to move a print wire (7) mounted on the distal end of the arm (22) back and forth. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/295 (2006.01)
CPC (source: EP)
B41J 2/295 (2013.01)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0502720 A2 19920909; EP 0502720 A3 19921209; JP H04109147 U 19920921
DOCDB simple family (application)
EP 92301870 A 19920304; JP 1919691 U 19910304