Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1997-08-27
2000-01-11
Le, N.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
B41J 206
Patent
active
06012802&
ABSTRACT:
A device for use in the technique of direct electrostatic printing (DEP) on an intermediate or final substrate is described, comprising a receiving member support 5 having control back electrodes 5b and a common shield back electrode 5a; a printhead structure 6 having control print electrodes 6a in combination with apertures 7 and a common shield print electrode 6b; a toner delivery means 1 presenting a cloud 4 of toner particles in the vicinity of said apertures 7. The control print electrodes 6a in the printhead structure 6 and the control back electrodes 5b in the receiving member support 5 are positioned in a 1 to 1 relationship, and the control electrodes of both the printhead structure 6 and the receiving member support 5 are driven in an imagewise manner by a variable voltage source, in order to get a specific toner density on the receiving member substrate 9.
REFERENCES:
patent: 3689935 (1972-09-01), Pressman et al.
patent: 4478510 (1984-10-01), Fujii et al.
patent: 5121144 (1992-06-01), Larson et al.
patent: 5214451 (1993-05-01), Schmidlin et al.
Patent Abstracts of Japan, vol. 9, No. 62 (P-342) (1785) Mar. 19, 1985 and JP-A-59 195 671 (Matsushita) Nov. 6, 1984.
Desie Guido
Leonard Jacques
AGFA-GEVAERT
Le N.
Nghiem Michael
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