Patent ID: 8817057

Claim:
An image erasing device comprising: a first erasing section configured to heat and convey the sheet comprising: a first heating roller, and a first pressing roller, wherein the first heating roller and the first pressing roller are disposed on opposite sides of a conveying path, and the first heating roller is configured to contact a first side of the sheet and provide a first heat output to the sheet; and a second erasing section disposed downstream from the first erasing section in a paper conveying direction along the conveying path, the second erasing section configured to heat and convey the sheet, the second erasing section comprising: a second heating roller, and a second pressing roller, wherein the second heating roller and the second pressing roller are disposed on opposite sides of the conveying path, and the second heating roller is configured to contact a second side of the sheet and provide a second heat output to the sheet, the second heat output being less than the first heat output, wherein at least one of the second heating roller and the second pressing roller has a diameter smaller than one of a diameter of the first heating roller and a diameter of the first pressing roller.