Driving circuit and its control method and correlation thermal transfer printing head

Abstract

A drive circuit for thermal print head has multiple gate groups coupled respectively to multiple control signals with different time sequences, and register module coupled to the said multiple gate groups for providing a relative chromatic level data to each gate unit. Each gate group has multiple gate units coupled respectively to multiple heating elements. Each gate unit can control the coupled heating elements according to relative control signal and received chromatic level data.

Description

technical field [0001] The invention relates to thermal transfer printing technology, especially to a driving circuit of a thermal sublimation printer, a control method thereof and a related thermal transfer head. Background technique [0002] Generally speaking, color printers can be classified into four categories: dot matrix printers, inkjet printers, laser printers, and dye sublimation (also known as thermal transfer) printers. Among them, since the dye-sublimation printer can achieve continuous color gradation (full tone) printing performance, it has attracted more and more attention from the market. Dye-sublimation printers use a thermal print head to heat the ribbon, transfer the dye on the ribbon to the object to be printed, and form a continuous color gradation according to the length of heating time or the heating temperature. . [0003] Please refer to FIG. 1 , which is a schematic diagram of a known thermal transfer head 100 . As shown in the figure, multiple ...

AI Technical Summary

Problems solved by technology

Although such a printing method can reduce the power consumption of the thermal transfer head 100, it takes twice the printing time and increases the complexity of the firmware control of the thermal sublimation printer.

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