Printing head system for use in an electrocoagulation printing a

Details Printing head system for use in an electrocoagulation printing a Printing head system for use in an electrocoagulation printing a

1997-12-23

1999-08-24

Mayekar, Kishor

Chemistry: electrical and wave energy

Processes and products

Electrophoresis or electro-osmosis processes and electrolyte...

204623, 101DIG29, 101DIG37, C25D 1300

Patent

active

059420944

ABSTRACT:
The invention relates to a printing head system for an electrocoagulation printing apparatus. The printing head system of the invention comprises an electrode carrier, a linear array of electrolytically inert electrodes electrically insulated from one another and mounted to the electrode carrier, the array of electrodes being arranged into a plurality of groups each having a predetermined number of closely spaced electrodes, and a driver circuit for addressing the electrodes of selected groups. The driver circuit is responsive to a graphical data input signal to cause simultaneous passage of electric current through at least a major portion of the electrodes in a selected one of the groups, the major portion of electrodes including electrodes that are contiguous with one another. Such a printing head system is capable of improving the quality of the image reproduced by electrocoagulation of an electrolytically coagulable colloid.

REFERENCES:
patent: 4895629 (1990-01-01), Castegnier

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