发明名称 |
Hologram recording material - by coating a rigid or flexible support with gelatin, and sensitising with aq. ammonium di:chromate soln. |
摘要 |
<p>Process for prodn. of a hologram recording material with a flexible or rigid support, consists of preparing a 12-18% suspension of pure gelatin in water and mixing to cause complete dissoln. at 20 deg.C, followed by mixing for 5-10 mins. at 70 deg.C; filtering the soln. using a filter maintained at 50 deg.C; cooling to 40 deg.C and maintaining the temp. at this; adding 0.5 wt.% ammonium dichromate w.r.t. gelatin and mixing to achieve complete dissoln. The bath is then maintained at 40 deg.C and the support is immersed in the bath for ca. 1 min. and withdrawn at 1-5 cm/min. The coated support is dried in air in the vertical position for 1 hr., then the material is hardened in an oven for 2 hrs. at 150 deg.C. The material is then sensitised by immersion for 5 mins. in a 4-10% aq. ammonium dichromate soln. and stored in darkness at 20-30 deg.C for a max. of 48 hrs. in air at 30-40% humidity. Prods. have improved efficiency of diffraction and signal/noise ratio than previous materials based, e.g. on silver halide materials and give holograms with high resolution.</p> |
申请公布号 |
FR2492997(A1) |
申请公布日期 |
1982.04.30 |
申请号 |
FR19800023175 |
申请日期 |
1980.10.24 |
申请人 |
ADEPHOT |
发明人 |
PATRICK MEYRUEIS, MICHEL GROSMANN ET ROMUALDA GRZYMALA, EPOUSE PIEL;GROSMANN MICHEL;PIEL ROMUALDA GRZYMALA EPOUSE |
分类号 |
G03C1/66;(IPC1-7):03C1/66;03C5/22;03H1/00 |
主分类号 |
G03C1/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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