Imaging medium with low refractive index layer

An imaging medium comprising:

• means for providing a light-reflecting layer;
• an image-receiving layer for receiving image-forming components, the image-receiving layer having a refractive index of at least about 1.45
• a transparent layer superposed over the image-receiving layer on the opposed side thereof from the means for providing a light-reflecting layer such that an image in the image-receiving layer can be viewed through the transparent layer against the light-reflecting layer provided by said means, the transparent layer having a refractive index of at least about 1.50;
• and
• an image enhancement layer disposed between the image-receiving layer and the transparent layer, the image enhancement layer having a refractive index not greater than about 1.43.

A diffusion transfer process film unit comprising first and second sheet-like elements and a rupturable pod of processing composition, the film unit having means for providing a light-reflecting layer;

• the first sheet-like element comprising photosensitive and image-forming components;
• the rupturable pod of processing composition being positioned to release the processing composition across the film unit between the first and second sheet-like elements and in contact with the photosensitive and image-forming components upon rupture of the pod, thereby releasing image-forming components from the first sheet-like element;
• the second sheet-like element comprising an image-receiving layer for receiving image-forming components;
• a transparent layer superposed over the image-receiving layer on the opposed side thereof from the means for providing a light-reflecting layer such that an image in the image-receiving layer can be viewed through the transparent layer against the light-reflecting layer provided by said means;
• and
• an image enhancement layer disposed between the image-receiving layer and the transparent layer, the image enhancement layer having a refractive index less than the refractive indices of the image-receiving layer and the transparent layer, and not greater than about 1.43.

A diffusion transfer process film unit comprising first and second sheet-like elements and a rupturable pod of processing composition, the film unit having means for providing a light-reflecting layer;

• the first sheet-like element comprising photosensitive and image-forming components;
• the rupturable pod of processing composition being positioned to release the processing composition across the film unit between the first and second sheet-like elements and in contact with the photosensitive and image-forming components upon rupture of the pod, thereby releasing image-forming components from the first sheet-like element;
• the second sheet-like element comprising an image-receiving layer for receiving image-forming components released from the first sheet-like element, the image-receiving layer having a refractive index of at least about 1.45;
• a transparent layer superposed over the image-receiving layer on the opposed side thereof from the means for providing a light-reflecting layer such that an image in the image-receiving layer can be viewed through the transparent layer against the light-reflecting layer provided by said means, the transparent layer having a refractive index of at least about 1.50;
• and an image enhancement layer disposed between the image-receiving layer and the transparent layer, the image enhancement layer having a refractive index not greater than about 1.43.