| http://www.w3.org/ns/prov#value | - A masking device for covering an area of a photosensitive material during exposure of the material, comprising:a cover for masking at least part of the area of the material during exposure and an assembly defining an end of said cover, said assembly including a cover end holder and a member defining a masking edge, wherein said cover end holder and said member are separate from each other.
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