Image erasing apparatus and control method for image erasing apparatus

An image erasing apparatus comprising:

• a supply unit which supplies a recording medium;
• a collection unit which collects the recording medium supplied by the supply unit;
• plural carrying roller pairs which are situated along a carrying path through which the recording medium supplied by the supply unit is carried toward the collection unit, with each of the carrying roller pairs nipping and pressing the recording medium and thus carrying the recording medium;
• a detection unit which acquires information about a metallic foreign matter adhering to the recording medium, at a first position in the carrying path;
• a heating unit which is situated at a second position downstream in a carrying direction from the first position in the carrying path and heats the recording medium to a color erasing temperature of a developer or higher;
• and
• a carrying control unit which decelerates a rotation speed of the plural carrying roller pairs from a first speed to a second speed when the information about the metallic foreign matter is acquired by the detection unit.