Paper width detection method for a label printer, printing control method for a label printer, and a label printer

摘要

When a label printer detects the paper width, the paper width detection operation scans the transportation path in the paper width direction by the paper width detector not once but twice, and conveys the recording medium transportation distance L, which is longer than the gap length of the gap between labels and is shorter than the label length of each label, between the first and second paper width detection operations. Of the two positions detected as the left edge of the recording medium in the first and second detection operations, the position that is farthest left is used. Likewise, of the two positions detected as the right edge of the recording medium in the first and second detection operations, the position that is farthest right is used.

主权项

1. A paper width detection method for a label printer, comprising:
conveying a recording medium that has a continuous transparent liner with removably affixed labels along a transportation path in a first direction to a first predetermined position; detecting the recording medium in a paper width direction at the first predetermined position; conveying the recording medium a distance along the transportation path in a second direction opposite the first direction to a second predetermined position, wherein the distance is longer than a gap between adjacent labels affixed to the recording medium; detecting the recording medium in the paper width direction at the second predetermined position; determining a label width based on points of change in at least one of the detecting at the first predetermined position and the detecting at the second predetermined position; conveying the recording medium along the transportation path in the first direction toward the first predetermined position; and printing on the label based on the determined label width and the first predetermined position.