| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for detecting a correct end of a printing medium having a part where the end cannot be detected. SOLUTION: This printing medium end-detecting apparatus includes a photosensor 11 which can distinguish a platen 16 and a printing medium 6 mounted to the platen 16 by colors, a printing head-driving part 2 for moving a carriage 13 loading the photosensor 11 and a printing head 12 along the platen 16, and a printing medium transfer part 3 for moving the printing medium 6 in a longitudinal direction (Y direction). Moreover, the apparatus has a printing medium-detecting part 1 for detecting a position of the printing medium 6 from an output signal SS of the photosensor 11 and a position of the carriage 13, and a printing medium end-analyzing part 4 for moving the carriage 13 in a lateral direction (X direction) by the printing head-driving part 2 and moving the printing medium 6 in the longitudinal direction by the printing medium transfer part 3 as necessary, thereby detecting ends (a) and (b) of the printing medium.
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