Importance

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Abstract

A label roll holder returning mechanism is provided for a barcode printer and includes at least one restoration roller, a coiled resilient element, at least two movable rails, and at least two label roll holding elements. The restoration roller is rotatably mounted to a bottom of the barcode printer and has a top portion forming a positive-movement engagement section. The coiled resilient element is received inside the restoration roller to provide a restoration force to the rotation of the restoration roller. The movable rails are set to the bottom of the barcode printer in a substantially parallel manner. Each movable rail has a surface forming at least one counterpart positive-movement engagement section engaging the positive-movement engagement section of the restoration roller. The label roll holding elements are arranged at a top of the barcode printer and are coupled to the movable rails respectively, whereby the label roll holding elements offer the function of outward separating from each other for removing and installing a roll of label and inward approaching each other to clamp and hold the label roll by means of the engagement between the restoration roller and the movable rails and the restoration force thereof. As such, a label roll holder returning mechanism featuring balanced force restoration is provided.

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First Claim