| 摘要 |
<p>Conventionally photographic prints are provided on a paper substrate which contributes stiffness and opacity to the product but can be adversely affected by photographic processing chemicals. With the invention the photosensitive layer is provided on one surface (2) of a polymeric sheet (1, 11). After its photographic exposure the material is processed to develop the image (10). After processing, the sheet is bonded to a stiff backing substrate (4, 13) (normally paper). The polymeric sheet is opaque and is bonded (12) to the substrate on the surface opposite to the sensitised surface. A suitable material for the opaque polymeric sheet is white pigmented MELINEX polyester from ICI. The opacity of the pigmented polymer just behind the photographic layer, yields a print of excellent optical quality.</p> |
