Label printer and label accurate positioning printing method thereof

Abstract

The invention discloses a label printer and a label accurate positioning printing method thereof. The label printer comprises an outer shell, a label box installed in the outer shell, a power mechanism and a control mechanism which are used for controlling paper outlet of the label box and take-up and pay-off of thermal transfer ribbons, and a printing head used for achieving label printing. According to the invention, internal spaces of the label box are reasonably planned, and a linear label paper outlet channel and a label rollback release space are arranged, so that smooth paper feeding and discharging are guaranteed, and label paper is prevented from wrinkling in a rollback process; through improvement of a gear transmission system, forward and reverse rotation of a gear can be realized through the same motor, so that normal printing of the label paper and the thermal transfer ribbons can be realized, rollback of the label paper and the thermal transfer ribbons can also be realized, waste of the label paper and the thermal transfer ribbons is avoided, and the material utilization rate is improved; and through arrangement of a photoelectric sensor with a reflecting prism, an occupied space of the label box is reduced, and favorable conditions are provided for realizing a miniaturized label box. The invention is compact in structure, high in space utilization rate, accurate and reliable in printing and wide in application range.

Description

technical field [0001] The invention relates to the field of label printers, in particular to a label printer capable of forward and reverse rotation and a method for precisely positioning and printing labels. Background technique [0002] At present, in thermal transfer label printers, the carbon ribbon advances along with the label paper in one direction, that is, the paper output direction, and the label paper is torn off or cut off after printing is completed. At this time, there is a certain length of blank label between the printing hair hot line and the cutting place of the label paper, and this section of blank label is not printed. At the same time, the carbon ribbon following the blank label is not used, and the label paper and carbon ribbon of this length will be wasted in the next printing, the material utilization rate is low, and the cost is high. [0003] And, the interior of the label box in the existing label printer is all installed with rolls of label pap...

AI Technical Summary

Problems solved by technology

Existing photoelectric sensors include transmitters and receivers respectively arranged on both sides of the label sticker, so that the face-to-face arrangement of transmitters and receivers requires a large space and high cost, which has become an obstacle to the installation of miniaturized label boxes

[0005] This shows that the above-mentioned existing label printer obviously still has inconvenience and defects in structure, method and use, and needs to be further improved urgently

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