| 摘要 |
A thermal developing apparatus in which a photothermographic element having a latent image is interposed between a heated member and a plurality of guiding rollers and when the photothermographic element is conveyed and heated while the guiding rollers are rotated, the thermal developing is conducted, and the visible image is obtained, a plurality of guiding rollers are arranged so that the variation cycle of the radius of each guiding roller is not synchronized with each other on the photothermographichic element during the rotation of each guiding roller.
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