Plural path ink jet writing arrangement

Claim 2

An arrangement for writing lines on a sheet of paper on a metal support by means of an ink jet comprising at least one nozzle adapted to project a jet of ink, two pairs of deflecting electrodes associated with said nozzle and pairs of auxiliary electrodes the energization of which is adapted to guide at least one jet of ink selectively along two different paths between said nozzle and said pairs of deflecting electrodes.

Claim 3

An apparatus as claimed in claim 1, wherein a plurality of groups of two pairs of deflecting electrodes distributed alongside the axis of the jet passing out of the corresponding nozzle provide parallel passageways for said jet, forming all the same angle with said axis, and the auxiliary electrodes are distributed in pairs registering each with one of said groups to deflect the jet away from its axis into the passageway afforded by said group.

Claim 4

An apparatus as claimed in claim 1, wherein a plurality of groups of two pairs of deflecting electrodes distributed alongside the axis of the jet passing out of the corresponding nozzle provide parallel passageways for said jet, forming all the same angle with said axis, and the auxiliary electrodes Are distributed in pairs registering each with one of said groups to deflect the jet away from its axis into the passageway afforded by said group, said pairs of auxiliary electrodes being located along a line coaxial with the jet passing out of the nozzle.

Claim 5

An apparatus as claimed in claim 1, wherein a plurality of groups of two pairs of deflecting electrodes distributed alongside the axis of the jet passing out of the corresponding nozzle provide parallel passageways for said jet, forming all the same angle with said axis, and the auxiliary electrodes are distributed in pairs registering each with one of said groups to deflect the jet away from its axis into the passageway afforded by said group, said pairs of auxiliary electrodes being located along a line coaxial with the jet passing out of the nozzle, the arrangement including means supplying the nozzle, deflecting electrodes and paper support with voltages such that the speed of the jet particles is the same in all said passageways afforded by the deflecting electrodes.

Claim 6

An arrangement as claimed in claim 1, comprising means feeding ink of different colors to different nozzles and means whereby the auxiliary electrodes are adapted to deflect selectively the jet of ink from a predetermined nozzle towards the deflecting electrodes.

Claim 7

An arrangement as claimed in claim 1, comprising a target facing the nozzle and adapted to receive the impact of the jet of ink out of said nozzle in the absence of any guiding of said jet towards deflecting electrodes.

Claim 8

An arrangement as claimed in claim 1, comprising a target facing the nozzle and adapted to receive the impact of the jet of ink out of said nozzle in the absence of any guiding of said jet towards deflecting electrodes, the groups of deflecting electrodes being distributed in pairs alongside the axis of the jet passing out of the corresponding nozzle to one side at least of said axis and the auxiliary electrodes being distributed pairwise to either side of said axis in registry with the corresponding group of deflecting electrodes symmetrically with reference to the axis of said group to deflect the jet away from its axis between the electrodes of said group.