Apparatus and method for increasing the coverage area of a contr

Details Apparatus and method for increasing the coverage area of a contr Apparatus and method for increasing the coverage area of a contr

1996-03-22

1998-12-08

Lee, S.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

G01D 1516

Patent

active

058477330

ABSTRACT:
A method for improving the print quality of an image recording apparatus in which charged particles are deposited in an image configuration on an information carrier is described. The method includes conveying the charged particles to a particle source adjacent to a back electrode; positioning a particle receiving information carrier between the back electrode and the particle source; providing a control array of control electrodes; providing at least one set of deflection electrodes; creating an electric potential difference between the back electrode and the particle source to apply an attractive force on the charged particles; connecting variable voltage sources to the control electrodes to produce a pattern of electrostatic fields to at least partially open or close passages in each electrostatic field by influencing the attractive force from the back electrode, thus permitting or restricting the transport of charged particles towards the information carrier; and connecting at least one deflection voltage source to at least one set of deflection electrodes to produce deflection forces modifying the symmetry of the electrostatic fields, thus controlling the trajectory of attracted charged particles.

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