| 摘要 |
PROBLEM TO BE SOLVED: To provide an image recorder capable of stably feeding photosensitive material by always applying fixed tension to the photosensitive material. SOLUTION: If load fluctuation is caused in the case of pulling out the photosensitive material 2 from a magazine 1, it influences a pair of introducing rollers 3 and the carrying amount of the material 2 by the pair of rollers 3 is changed. In such a case, if a main driving roller 8 continues stable carrying, the up-and- down position of a tension roller 21 is fluctuated by an amount corresponding to a difference between the carrying amount of the material 2 by the roller 8 and that by the pair of rollers 3. However, the diameter of the roller 21 is selected to be nearly equal to installation space between the pair of rollers 3 and a pair of intermediate rollers 7, so that the fixed tension (tension which is W/2 being the half of the gravity W of the roller 21) is always applied to the material 2 by the principle of a running block whatever position the up-and- down position of the roller 21 is. Thus, the material 2 is stably fed.
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