Semi-automatic Label Dispenser
Electric Semi-automatic label dispensers were first patented in the early 1970s. They were originally designed for multiple-row address labels for bulk mailing houses. On average a good mailing house employee could apply approximately 500 labels per hour to envelopes. The label dispenser increased this to over 2,000 per hour. These dispensers advance individual or multiple-row labels and remove them from their lining similar to a manual dispenser, but instead of manually pulling on the liner, label advancement occurs when a trigger on the dispenser detects the absence of a label, such as when the operator removes the label. The sensor then closes the circuit and engages the motor, dispensing the next label until the sensor once again detects the label which opens the circuit. The first electric dispenser was designed with the limit switch on the left of a 16" wide machine. 4-up multiple-row labels were loaded into the machine and once activated would advance one row of labels. The operator would take the labels from right to left, so that when the leftmost label was taken, the next row advanced, automatically providing a constant supply of labels to apply. The labels are also peeled without the natural curl that will happen when pulled from the backing paper with fingers. Also, only one hand was needed to take the label, the other hand could be used to move the material the label was being applied to.
Semi-automatic label dispensers are often built to withstand industrial conditions.
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