Card medium processing device and control method thereof

A control method of a card medium processing device comprising:

• judging whether or not a card medium having been inserted is detected by a first detection means for detecting the card medium having been inserted;
• judging whether or not the card medium having been inserted is detected by a second detection means for detecting the card medium having been inserted, the second detection means being placed at a position behind the first detection means further away toward a rear side in an inserting direction for the card medium;
• and
• carrying out a predetermined process when it is determined that the first detection means has an error, the error being indicated when the first detection means does not detect the card medium having been inserted while the second detection means detects the card medium having been inserted.

A card medium processing device for use with a card medium, the card medium processing device comprising:

• a front detection mechanism configured to detect insertion of the card medium;
• a rear detection mechanism configured to detect insertion of the card medium;
• a control section configured to receive an output signal from the front detection mechanism and the rear detection mechanism, and configured to judge whether the front detection mechanism or the rear detection mechanism has an error;
• wherein the rear detection mechanism is provided at a position behind the front detection mechanism toward a rear side in an inserting direction of the card medium;
• and
• the control section is configured to judge that the front detection mechanism has an error, if the front detection mechanism does not detect the card medium having been inserted while the rear detection mechanism detects the card medium having been inserted.