Conveyance mechanism and label printer

A conveyance mechanism for conveying a label including an adhesive side on which an adhesive has been provided, the conveyance mechanism comprising:

• a drive roller;
• and
• a rotatably provided assist roller;
• wherein
• the drive roller and the assist roller are configured to sandwich the label, and the drive roller is driven in order to unwind the label from a label roll on which the label is wound,
• an outer surface of the assist roller includes a contact portion configured to come into contact with at least a part of the print side of the label,
• the contact portion is provided so as to avoid coming into contact with a portion of the adhesive oozing from at least one of edges of the label along a conveyance direction of the label,
• the assist roller includes a plurality of small diameter portions, each with an outer diameter smaller than an outer diameter of the contact portion, and
• the plurality of small diameter portions is provided in a lengthwise direction of the rotation shaft of the assist roller in a region into which the portion of the adhesive oozes from one of the edges of the label, and their positions in the width direction correspond to a plurality of labels each having a different width.