Printing apparatus

A printing apparatus comprising:

• a driving unit configured to cause a roll sheet to rotate in a first direction and a second direction opposite to the first direction;
• a printing unit configured to perform printing on a sheet supplied by causing, by the driving unit, the roll sheet to rotate in the first direction;
• and
• a detecting unit configured to emit light to the sheet of the roll sheet and to output an output based on the light from the sheet,
• wherein in accordance with the output from the detecting unit when the roll sheet rotates in the second direction, the driving unit switches the rotation of the roll sheet from the second direction to the first direction or stops the rotation in the second direction.

A printing apparatus comprising:

• a driving unit configured to cause a roll sheet to rotate in a first direction and a second direction opposite to the first direction;
• a printing unit configured to perform printing on a sheet supplied by causing, by the driving unit, the roll sheet to rotate in the first direction;
• and
• a detecting unit configured to emit light to the sheet of the roll sheet and to output an output based on the light from the sheet,
• wherein in a case in which a leading end of the sheet of the roll sheet is detected by the detecting unit, the driving unit switches the rotation of the roll sheet from the second direction to the first direction, and in a case in which the leading end of the sheet of the roll sheet is not detected by the detecting unit, the driving unit stops the rotation in the second direction.

A printing apparatus comprising:

• a driving unit configured to cause a roll sheet to rotate in a first direction and a second direction opposite to the first direction;
• a printing unit configured to perform printing on a sheet supplied by causing, by the driving unit, the roll sheet to rotate in the first direction;
• and
• a detecting unit configured to emit light to the sheet of the roll sheet and to output an output based on the light from the sheet,
• wherein in a case in which an abnormal state is determined based on the output from the detecting unit when the roll sheet rotates in the second direction, the driving unit stops the rotation of the roll sheet in the second direction.