B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
B41F 23/08 (2006.01) B41F 5/24 (2006.01)
Patent
CA 2431958
The invention concerns a sheet-by-sheet flexographic printing device of safety documents, comprising means for transferring (2) said sheets (F), successively, from a supply station (1) located upstream, to a storage and removal station (6) located downstream, via at least a flexographic printing station (3) adapted to process the front surface of said sheets called first station . The invention is characterised in that the device also comprises at least a flexographic printing station (4), called second station , adapted to process the back surface of said sheets (F) during their transfer from upstream to downstream, without having to grasp them and modify their orientation between the two stations, said two stations being separated by at least two intermediate cylinders (22, 23) and said second printing station (4) is offset in height relative to the first (3), such that when they are transferred from one to the other, the sheets (F) are imparted an upward trajectory. The invention also concerns the security documents obtained by using such a device.
L'invention concerne un dispositif flexographique, feuille ~ feuille, de documents de s~curit~, qui comprend des moyens de transfert (2) desdites feuilles (F), successivement, d'un poste d'approvisionnement (1) situ~ en amont, ~ un poste de stockage et d'enl~vement (6) situ~ en aval, via au moins un poste d'impression flexographique (3) apte ~ traiter la face recto desdites feuilles dit "premier poste". Cette invention est remarquable par le fait que le dispositif comporte ~galement au moins un poste d'impression flexographique (4), dit "deuxi~me poste", apte ~ traiter la face verso desdites feuilles (F) lors de leur transfert d'amont en aval, sans avoir ~ les saisir et inverser leur orientation entre les deux postes, ces deux postes ~tant s~par~s par au moins deux cylindres interm~diaires (22, 23) et que ledit deuxi~me poste d'impression (4) est d~cal~ en hauteur par rapport au premier (3), de sorte que, lors du transfert de l'un ~ l'autre, les feuilles (F) subissent une trajectoire ascendante. L'invention concerne ~galement les documents de s~curit~ obtenus en utilisant un tel dispositif.
Demaimay Florian
Loury Rene
Francois-Charles Oberthur Fiduciaire
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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