HOT-MELT TYPE TRANSFER INK RIBBON

摘要

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.