| 摘要 |
light-sensitive materials. SUBSTANCE: photographic material is intended for use in information record systems, for photographic and polygraphic needs. Material contains light-sensitive layer based on zinc oxide and/or titanium dioxide with water-permeable polymer binder, which is treated with 5% aqueous lead acetate solution. Material allows creating direct photographic images that can be removed on moistening with water and so it can be reused for recording new information. EFFECT: enabled repetitive information records. 2 ex
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