EP 0221453 B1 19900509 - ELECTROSTATIC PRINT HEAD
Title (en)
ELECTROSTATIC PRINT HEAD
Publication
Application
Priority
FR 8515979 A 19851028
Abstract (en)
[origin: US4689643A] The invention relates to electrostatic print heads enabling an electrostatic latent image to be progressively built up on a moving medium (18) which may be constituted by special paper or by some other material, by discharging ions using a set of aligned electrodes (20) and a counterelectrode (1) disposed opposite said electrodes on the other side of the moving medium (18). The counterelectrode (1) is constituted by a cylindrical or semi-cylindrical resistive layer (7) covering connection conductors (C1 to Cn+1) which are constituted by parallel rings or ring sectors sharing a common axis with the resistive layer and having cylindrical or semi-cylindrical resistive portions extending therebetween. The rings or ring sectors are individually connected to outlets from an electronic selective switching circuit (CEC) which is at least partially housed within the concave portion of said counterelectrode (1).
IPC 1-7
IPC 8 full level
B41J 2/395 (2006.01)
CPC (source: EP US)
B41J 2/395 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0221453 A1 19870513; EP 0221453 B1 19900509; DE 3670984 D1 19900613; FR 2589274 A1 19870430; FR 2589274 B1 19871211; US 4689643 A 19870825
DOCDB simple family (application)
EP 86114691 A 19861023; DE 3670984 T 19861023; FR 8515979 A 19851028; US 92392386 A 19861028