PURPOSE: To enable copying which utilizes an exposure from the recording medium side, and a reflective light from the side of an original placed in contact with the titled medium, etc., by providing with a photosensitive microcapsule on one surface of a sheet like supporting body which is studded with light passages on the sheet.

CONSTITUTION: The sheet like supporting body 3 of the titled medium 1 is composed of the sheet 2 and a shielding layer 3a which is formed at the rear of the sheet 2. The shielding layer 3a is studded with the light passages 4 which are not coated with a shielding agent. The photosensitive microcapsules 5aW5c are coated on the surface of the sheet like supporting body 3. Said microcapsules 5aW5c enclose separately a yellow, a magenta and a cyan coloring matters, a photo-curing resin and a photopolymerization initiator in a color respect. In case that the titled medium is exposed with for example, the blue colored light coming from the side of the shielding layer 3a, after the original 6 is placed in contact with the surface of the sheet like supporting body 3, the blue colored light gets to the original 6 through the light passages 4. The capsule 5a existed in apart in which the blue colored light reflects, is exposed, thereby cured. While, the capsule 5a existed in a part in which the blue colored light is absorbed, does not cure. Next, when the uncured capsule is broken, whereby an image is formed on a development sheet.