Colored ink ribbon of electrothermal transfer type for thermal p

Details Colored ink ribbon of electrothermal transfer type for thermal p Colored ink ribbon of electrothermal transfer type for thermal p

1987-08-03

1988-10-04

Kittle, John E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

400120, 428195, 428209, 428484, 428913, 428914, B32B 702

Patent

active

047755784

ABSTRACT:
The invention provides an electrothermal hot-melt type thermal transfer ink ribbon having a multi-layered structure used in thermal printers having a multi-stylus electrode head. Different from conventional ink ribbons of such a type composed of an electroconductive base film as a resistive layer, a vapor-deposited aluminum layer to serve as an electric pass to a return electrode and a layer of a hot-melt ink, the inventive ink ribbon has an additional layer as a heat barrier between the aluminum layer and the hot-melt ink layer so that the heat generated in the resistive base film and reaching the ink layer is radially diffused to produce a remarkable temperature gradient within the dot decreasing from the center to the periphery thus to provide a possibility of gradation control of the optical density of the printed dots by means of the voltage adjustment.

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