Optical scanning of images
AssigneeCrosfield Electronics Limited
InventorsDavid G. Hare, Robert Rayner
Life of this patent
Estimating the term…
Abstract
An assembly that can be optically scanned and that comprises a transparency that includes an image and that is carried by a transparent support to which it is secured and with which it is in intimate fluid contact wherein the fluid contact is provided by an overall layer of pressure sensitive adhesive that has a refractive index substantially the same as the refractive index of the transparency and that releasably secures the transparency to the support.
Claims10
In an optical scanning assembly that includes a transparency having an image that is to be optically scanned by an optical scanner, a transparent support onto which the transparency can be firmly secured in intimate fluid contact to prevent movement during scanning of the image by transmission of light through the transparency and the support, the improvement which comprises the transparency being firmly secured in intimate fluid contact with the transparent support by an overall layer of pressure-sensitive adhesive that wets the surface of the transparency and that releasably secures the transparency to the support, where the difference between the highest and lowest refractive indices of the adhesive layer, the transparency and the support is not more than about 0.2.
In a process of optically scanning an optical scanning assembly that includes a transparency having an image that is to be optically scanned by an optical scanner, a transparent support onto which the transparency is firmly secured in intimate fluid contact to prevent movement during scanning of the image by transmission of light through the transparency and the support, and the transparency is then removed from the support, the improvement which comprises firmly securing the transparency in intimate fluid contact with the transparent support by an overall layer of pressure-sensitive adhesive that wets the surface of the transparency and that releasably secures the transparency to the support, where the difference between the highest and lowest refractive indices of the adhesive layer, the transparency and the support is not more than about 0.2.
Dependencies are inferred from the claim text.