Apparatus of a printer for detecting termination of printing medium

摘要

An apparatus of a printer for detecting a termination or near-termination of a printing medium includes a frame for housing and supporting a roll of the printing medium and capable of being set in a first position and a second position; a first printing medium detecting portion and a second printing medium detecting portion for non-contact detection of the termination or near-termination of the printing medium according to a varying diameter of the roll of the printing medium when the frame is in the first position and the second position; and a position adjusting portion for adjusting an initial set position of the first and the second printing medium detecting means according to an initial diameter of the roll of the printing medium.