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A highly sensitive X-ray image instant camera has been realized based on the scintillator-and-photoreceptor conversion method for a radiation image. As compared with the routinely used screen-film combination in medical and industrial fields, a high sensitivity of nearly 10 times the X-ray method has been obtained. The experimentally made camera houses a scintillator-photoreceptor image plate of 10 X 10 cm size together with a corotoron charger as well as a toner developer, and a series of X-ray photographs with various energy conditions have become obtainable in a short time.