Printing ribbon
AssigneeTriumph Werke Nurnberg A.G.
InventorsRainer Anton, Ernst Beyer, Bodo Bielefeld
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Abstract
An improved printing ribbon for use between a writing electrode and a permeable counterelectrode across which a pulse of predetermined magnitude and duration is applied. The material of the ribbon is such that it experiences multiple electric breakdowns causing it to be propelled through the permeable counterelectrode onto a record sheet held adjacent the permeable counterelectrode outside the sandwich. In a preferred embodiment, the ribbon is provided with a metallized coating which serves as the permeable counterelectrode.
Claims5
A printing ribbon adapted to be placed between a writing electrode and a permeable counterelectrode for transferring marking material thereof to a record adjacent the outer side of said counterelectrode on experiencing multiple dielectric breakdowns in response to voltages applied directly across said writing and counter-electrodes,
- said ribbon comprising a discrete continuous layer of dielectric material having a predetermined breakdown voltage of lesser magnitude than the voltage applied across said writing and permeable counterelectrodes,
- pigments within said layer,
- said pigmented layer constituting said marking material.
Dependencies are inferred from the claim text.