JPS6051053U - Thermal transfer color printer - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

1 to 7 show an embodiment of the present invention, in which FIG. 1 is an overall perspective view, FIG. 2 is a plan view of main parts, FIG. 3 is a perspective view of a thermal ink ribbon, and FIG. Figure 4 is a side view of the color sensor section, Figure 5 is a diagram showing the spectral sensitivity characteristics of each dye in the thermal ink ribbon, and Figure 6 is a diagram showing the relationship between the light reception level of the phototransistor and the type of pigment in the thermal ink ribbon. 7 are diagrams showing the electrical configuration of the main parts. Moreover, FIG. 8 is a diagram corresponding to FIG. 4 showing another embodiment of the present invention. In the figure, 4 is printing paper, 9 is a thermal head, 15 is a thermal ink ribbon, 17.33 is a color sensor, 18 is a light source, 19 is a light emitting diode (first light emitting element), 20
is a light emitting diode (second light emitting element), 22.35 is a phototransistor (light receiving section), 24 is a CPU (detection means), 34 is a two color light emitting diode (two color light emitting element, light source)
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Claims (1)

[Claims for Utility Model Registration] 1. A thermal ink ribbon having multiple color pigments divided in the length direction, and selectively thermally transferring the pigments of the thermal ink ribbon to printing paper according to the heat generated by the thermal head. In a thermal transfer color printer configured as above, a light source and a light receiving section that form a pair are arranged so that light from the light source passes through the thermal ink ribbon and is received by the light receiving section, and the light receiving state of the light receiving section determines the A thermal transfer color printer characterized by being provided with a detection means for detecting the type of pigment in a thermal ink ribbon. 2 The thermal ink ribbon has pigments of three primary colors, and the light source includes a first light emitting element and a second light emitting element of a first luminescent color that have similar transmission characteristics for two different combinations of the pigments. A thermal transfer color printer according to claim 1, characterized in that the printer comprises a second light-emitting element that emits color. 3 The first light emitting element and the second light emitting element are arranged perpendicularly to the longitudinal direction of the thermal ink ribbon, and the light receiving part is arranged at an equal distance from the first and second light emitting elements. The first light receiving element is composed of one light receiving element.
The thermal transfer color printer according to claim 2, wherein the second light emitting element is lit in a time-division manner. 4 The thermal ink ribbon has pigments of three primary colors, and the light source is time-shared with a first emission color and a second emission color that have similar transmission characteristics for two different combinations of each of the above pigments. A thermal transfer color printer according to claim 1, characterized in that it is comprised of two-color light emitting elements that are lit.