| 摘要 |
PURPOSE:To prevent defects of an image due to formation of sublimates by holding a frame body heating body at a temperature lower than the temperature of a heating body to heat both faces of a sheet material and holding the frame body heating body at a temperature higher than the heating temperature of the heating body when the sheet material is removed from a device. CONSTITUTION:A sheet material 1 is held between a frame body 2 and a holding body 4, and pressurized air is introduced to a pressurized air chamber 17 to bring closely the sheet material 1 into contact with a thin plate-shaped supporting body 3 and a heating body 5, and the sheet material 1 is heated through the thin plate-shaped supporting body 3 by the heating body 5. Simultaneously, power is supplied to a frame heating body 31 to control the frame body to a prescribed high temperature lower than the temperature of the heating body 5, and the sheet material 1 is heated from the side of the frame body 2. Then, sublimates from the sheet material 1 are prevented from sticking to recessed parts of the frame body to form needle-shaped crystal. When the sheet material 1 is removed, the frame heating body 31 is held at a temperature higher than the heating temperature of the heating body 5 to remove completely a minute amount of sublimates stuck to the frame heating body 31. Thus, defects of the image due to formation of sublimates are prevented. |
