EP 0924089 A1 19990623 - A printhead structure for use in a device for direct electrostatic printing comprising symmetrical control electrodes in the printing nip
Title (en)
A printhead structure for use in a device for direct electrostatic printing comprising symmetrical control electrodes in the printing nip
Title (de)
Druckkopfstruktur zur Verwendung in einer Vorrichtung zum direkten elektrostatischen Drucken mit symmetrischen Steuerelektroden am Druckoberflach
Title (fr)
Structure d'une tête d'impression utilisée dans un dispositif d'impression électrostatique directe comprenant des électrodes symétriques à la surface d'impression
Publication
Application
Priority
- EP 98204099 A 19981204
- EP 97204014 A 19971218
Abstract (en)
A printhead structure (106) for use in a device for direct electrostatic printing using dry toner particles comprising a sheet of insulating material (106c) having two faces, a row of printing apertures (106d) through the insulating material, a printing nip (120), with edges, defined around the row and control electrodes (106a) on at least one of the faces, each of the control electrodes having a first electric conductor (C1) around at least one of the printing apertures, and two further electric conductors (C2 and C3) extending from the first electric conductor towards the edges of the printing nip, one of the further electric conductors having a length, LC3, larger than 3 mm and one having a length, LC2 of at most 4 mm and the lengths LC2 and LC3 being such that LC2/LC3 ≤ 0.75. A device incorporating a printhead such a printhead structure is also disclosed. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/415 (2006.01)
CPC (source: EP)
B41J 2/4155 (2013.01)
Citation (applicant)
- US 3689935 A 19720905 - PRESSMAN GERALD L [US], et al
- US 5307092 A 19940426 - LARSON OVE [SE]
- US 5596356 A 19970121 - LEE MICHAEL H [US]
- US 5650809 A 19970722 - KITAMURA TETSUYA [JP]
- DE 19716115 A1 19971030 - ARRAY PRINTERS AB [SE]
- US 5128695 A 19920707 - MAEDA MASATAKA [JP]
- EP 0812269 A1 19971217 - OHIO ELECTRONIC ENGRAVERS INC [US]
- EP 0795802 A1 19970917 - AGFA GEVAERT NV [BE]
Citation (search report)
- [DXAY] DE 19716115 A1 19971030 - ARRAY PRINTERS AB [SE]
- [XY] US 5128695 A 19920707 - MAEDA MASATAKA [JP]
- [A] US 5477250 A 19951219 - LARSON OVE [SE]
- [A] WO 9426527 A1 19941124 - ARRAY PRINTERS AB [SE]
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 98204099 A 19981204