Importance

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Abstract

A printing medium roll clamping support is provided for use in a barcode printer and includes at least two bases, each having a top forming at least one connection section and at least two positioning sections, and at least two changeover devices, each having opposite surfaces respectively forming a first positioning ring and a second positioning ring. The bases are respectively and movably fit in tracks defined in a housing of the barcode printer to allow the bases to be selectively moved inward for clamping a roll of printing medium or moved outward for releasing the roll of printing medium. Each changeover device has a bottom forming a pivot joint section and at least two positioning elements. The pivot joint section corresponds to and is rotatably coupled to the connection section of the corresponding base so as to allow for selective rotation of the changeover device by 180 degrees to switch between the first positioning ring and the second positioning ring for clamping rolls of printing medium of different diameters. With the positioning elements fit into the positioning sections, the changeover device is securely retained on the top of the corresponding base.

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First Claim