发明名称 |
PHOTOGRAPHIC NEGATIVE BASE MATERIAL FOR SELF-DEVELOPING TYPE FILM PACK |
摘要 |
<p>This disclosure relates to production of a photographic film assembly substantially free of optical pinholes for use as a base for negatives in self-developing film packs. The assembly comprises a paper layer and first and second layers of polyolefin adhered to opposite sides of the paper layer. The paper layer has a caliper of about 2 mils to about 4.5 mils and a basis weight of about 55 g/m2 to about 125 g/m2. The first and second polyolefin layers each have a layer weight of about 10 g/m2 to about 48 g/m2. Carbon black is uniformly dispersed in at least two out of the three layers. The total amount of carbon black in the assembly is about 2.5 g/m2 to about 4.0 g/m2.</p> |
申请公布号 |
JPS56161540(A) |
申请公布日期 |
1981.12.11 |
申请号 |
JP19810052906 |
申请日期 |
1981.04.08 |
申请人 |
SHIYUURAA TECHNICAL PEEPAAZU I |
发明人 |
KURAUSU BII KASUPAA;UIRIAMU ERU KUOOTSU;UIRIAMU ETSUCHI MAIYAAZU |
分类号 |
G03C1/79;G03C8/42;G03C8/48;G03C8/52 |
主分类号 |
G03C1/79 |
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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