Reduction of spot misplacement through electrostatic...

Details Reduction of spot misplacement through electrostatic... Reduction of spot misplacement through electrostatic...

B - Operations, Transporting

41

J

B41J 2/045 (2006.01) B41J 2/06 (2006.01) B41J 2/14 (2006.01)

Patent

CA 2271608

A method and apparatus which laterally focusses aqueous ink drops onto a substrate, using electric fields. The drops are not charged, and focusing results from the forces on the uncharged dielectric drop that occur in a nonuniform electric field. It is shown that initial lateral velocity misdirection of the drops is corrected using electric fields. Lateral velocities which would produce drop displacements of -50µm from their intended positions, at a height of 1mm above the ink surface, may be corrected to produce displacements of less than 2.5µm.

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