Thermal transfer printing coding machine and motor rotating speed control method and device thereof

Abstract

The invention discloses a thermal transfer printing coding machine and a motor rotating speed control method and device thereof. The method comprises the following steps: detecting the position of a magnetic element; driving a second motor used for recovering thermal transfer ribbons to recover the thermal transfer ribbons based on the position until the second end of the magnetic element is aligned with a hall chip; recording the rotating angle of the second motor; driving a first motor used for distributing the thermal transfer ribbons to distribute the thermal transfer ribbons based on theposition until the first end of the magnetic element is aligned with the hall chip; recording the rotating angle of the first motor; calculating the first radius of the first thermal transfer ribbonscorresponding to the first motor and the second radius of the second thermal transfer ribbons corresponding to the second motor based on the recorded rotating angle of the second motor, the rotating angle of the first motor, and the length of the magnetic element; and acquiring the target angular speed of the first motor and the target angular speed of the second motor based on the first radius, the second radius and the preset thermal transfer ribbon running speed. With the adoption of the method, the motor angle speed can be conveniently measured and controlled, and thus the linearity speedand proper tension of the thermal transfer ribbons can be ensured.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to a thermal transfer coding machine and its motor speed control and device. Background technique [0002] The thermal transfer coding machine heats the ribbon through the print head to transfer the ink to the medium to achieve clear printing of the content. A thermal transfer printer generally includes a carbon ribbon reel and a carbon ribbon reel, which are driven by their own motors. Since the carbon ribbon is very thin, it is very important to ensure that the tension of the carbon ribbon extending between the carbon ribbon reel and the carbon ribbon reel is kept within a certain range. If the tension is too high, the carbon ribbon will be deformed or broken. result in incorrect operation or affect print quality. [0003] As the printing progresses, the carbon ribbon is gradually transferred from the carbon ribbon reel to the carbon ribbon reel, the diameter of the carbon ribb...

AI Technical Summary

Problems solved by technology

The disadvantage is that two sets of sensors are required, and the structure and program control are more complicated

[0005] The patent document CN102958702B discloses a belt drive and a method of operating the belt drive, and specifically discloses that a sensor assembly is added in the drive to obtain the angular velocity of the carbon ribbon motor and the carbon ribbon motor. Among them, CN102958702B further discloses that the sensor assembly includes A set of corresponding hall chips and magnetic components set on the tension adjustment device, and through the cooperation of Hall chips and magnetic components to realize the measurement of the angular velocity of the carbon ribbon motor and the carbon ribbon motor, as well as the carbon on the belt path. Control with length, but the angular velocity measurement and calibration method of Comparative Document 1 is more complicated and cumbersome

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