A new peel apart system was studied to obtain a metal image. In this system, the sensor was made by coating a photosensitive polymer layer containing diazo or azide compound on the metal layer which was formed by vacuum deposition on polyethyleneterephthalate film. The sensor was imagewise exposed to UV light and was heated at about 100°C for a few minutes. In order to develop the image, the photosensitive layer was subsequently peeled apart by using an adhesive tape. The positive and negative metal image were formed on the substrate and the tape respectively. In the positive type system the metal layer in the exposed area was peeled apart from the substrate, whereas in the negative type system the metal layer remained in the exposed area. The photographic property depended on the polymers and the photosensitive materials used as the photosensitive layer. For example, a positive type metal image was formed when poly (vinyl chloride) (PVC) and 2, 6-di (4'-azidobenzal)-4-methylcyclohexanone were used, and a negative type metal image was obtained when 2, 5-dibutoxy-4-morpholino-benzenediazonium tetrafluoroborate was used as a photosensitive material. The image formed by the system showed high contrast (γ=10) and had a resolving power of 25 lps/mm. The spectral photosensitivity of the sensor well coincided with that of the photodecomposition of the photosensitive material. The results suggested that the adhesive states of the metal to both the substrate and the photosensitive layer of the sensor were changed by the decomposition of the photosensitive material. To develop an image, these changes could be enforced by a post heat prosessing.