A label paper indexing control method for a label printer is provided that in one embodiment includes conveying label paper having labels affixed with a specific gap there between to a continuous liner through a path passed a printing position of a print head, detecting a reference position of the label paper at a detection position upstream from the print head, determining the position of a downstream label end of a label on the path as a first distance from the detection position based on when the reference position is detected, updating the first distance each time the label paper is conveyed, executing a power shutdown operation that writes the first distance to memory and turns the power off when a command instructing turning the power off is asserted, and reading the first distance from memory when the power turns on without the label paper having been replaced.