| 摘要 |
PURPOSE:To prevent picture irregularity even after a picture is left at high humidity for a long time, by using air-permeable, moisture-permeable materials for the formation of paper-feeding rollers which come into contact with the photosensitive surfaces of roll photosensitive paper. CONSTITUTION:A couple of paper-feeding rollers 2A and 2B are each composed of a mandrel 10 having a supporting function and an excellently air-permeable, moisture-permeable material part 11 of cyclo- or macro-structure covering the mandrel 10. A roll-paper feeder having this constitution provides excellent pictures with less picture irregularity than that by conventional rubber rollers, etc., even after roll photosensitive paper 1 being set is left in a high-humidity atmosphere for a long time. Further, one paper-feeding rollers while engaged with the other paper-feeding roller can be left for a long time, and the need for a mechanism releasing the paper-feeding roller is eliminated, thereby simplifying the structure and operation. |
