Heating roller temperature control system of re-transfer certificate card printer

Abstract

The invention discloses a heating roller temperature control system of a re-transfer certificate card printer. The system comprises a heating roller, and further comprises a first controller, and a temperature sensor, a heating rod driving module, a heating rod temperature detection module and a rubber wheel temperature detection module which are respectively connected to the first controller; the heating roller comprises a thick film heating rod and a rubber wheel sleeved on the thick film heating rod; the heating rod driving module is electrically connected with the thick film heating rod; the temperature sensor is arranged towards the rubber wheel, and the temperature sensor is electrically connected to the rubber wheel temperature detection module; and the first controller enables the heating switch of the thick film heating rod to be turned on and turned off according to the real-time temperature, fed back by the rubber wheel temperature detection module, of the rubber wheel and the real-time temperature, fed back by the heating rod temperature detection module, of the thick film heating rod. The first controller can know the real-time temperature of the thick film heating rod and the real-time temperature of the rubber wheel so as to control starting and stopping of the thick film heating rod, and the surface temperature of the rubber wheel tends to be stable.

Description

technical field [0001] The invention relates to the technology in the field of retransfer card printers, in particular to a heating roller temperature control system of a retransfer card printer. Background technique [0002] The retransfer card printer includes a set of ribbons and a set of retransfer film. The digital heating head (TPH) arranged in a multi-point heat source is used to heat the dye on the ribbon, and the dye is vaporized and transferred by sublimation. onto the retransfer film, and then move the retransfer film to the transfer area. The structure of the transfer area includes a heating roller module and a card drive roller mechanism. After the retransfer film is aligned with the card, the heating roller is heated by pressure This method transfers the image on the transfer film to the card. [0003] The heating roller is heated by the heating rod inside the heating roller. When the temperature of the rubber surface on the heating roller reaches the transfer...

AI Technical Summary

Problems solved by technology

[0004] Due to the process of heating the heating rod to the rubber on the surface of the heating roller, the storage, consumption and transfer of heat energy are affected by the electrothermal conversion efficiency of the heating rod itself, the air gap between the heating roller and the heating rod, the structure size of the heating roller, and the heat conduction of the rubber material on the surface of the heating roller. Coefficient, ambient temperature and other factors make it difficult to accurately control the temperature of the rubber surface on the heating roller surface

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