PURPOSE: To obtain ink sheet which allows an image to be formed using sublimable ink on a recording medium, without a sublimable ink image acceptive layer, such as plain paper and also an image formation device by transferring a sublimable ink acceptive layer to the image formation area of a recording medium and then transferring the sublimable ink to the image formation area to form an image.

CONSTITUTION: When an image is formed using sublimable ink on recording paper 4 without a sublimable ink acceptive layer such as plain paper, the acceptive layer containing the acceptive component of sublimable ink is transferred to an image formation area on recording paper 4 suited to a specified image formation size. An image can be formed on the recording paper 4 using the sublimable ink by transferring the sublimable ink. In case sublimable yellow, magenta and cyan ink are used, a full-color image can be formed. Therefore, it is possible to write characters on the blank of a formed image, for instance, when the image is formed on a postcard using the sublimable ink.