Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Reexamination Certificate
2000-01-06
2001-04-24
Schilling, Richard L. (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Diffusion transfer process, element, or identified image...
C430S212000, C430S209000, C430S227000, C430S256000, C430S259000
Reexamination Certificate
active
06221554
ABSTRACT:
This invention relates to photography and, more particularly, to novel photographic film units for forming images by diffusion transfer.
BACKGROUND OF THE INVENTION
Diffusion transfer film units of the self-developing or instant type are well known in the art. Such film units which generally include a photosensitive element, an image receiving element and a photographic processing composition, can be provided in black and white or multicolor formats. Further, such diffusion transfer film units may be of the type wherein the image-receiving element is designed to be separated from the photosensitive element after photoexposure and photographic processing are carried out, commonly referred to as “peel-apart” film units or they may be of the type wherein the photosensitive and image-receiving elements are designed to be maintained together after image formation is completed, commonly referred to as “integral” film units.
Typically, the images formed with diffusion transfer film units are stored in photo albums or placed in picture frames for viewing. However, as the state of the art advances and new uses are proposed for such images it would be desirable to have diffusion transfer film units where the images formed could be adhered to any convenient surface for viewing.
SUMMARY OF THE INVENTION
These and other objects and advantages are obtained in accordance with the invention by providing a self-developing film unit which includes a photosensitive element, an image-receiving element and wherein one outermost surface of the film unit comprises a support layer carrying a layer of a releasable material and a layer of an adhesive material. After an image is formed in the film unit by photoexposure of the photosensitive element and photographic processing of the exposed photosensitive element, the releasable material layer can be removed and the image-receiving element or the film unit, as the case may be, adhered to a surface for viewing the image.
The diffusion transfer film units of the invention may be adapted to provide black and white images or multicolor images. Further, the film units may be of the integral type or the peel apart type. In a preferred embodiment there is provided according to the invention an integral, multi color diffusion transfer photographic film unit.
REFERENCES:
patent: 4033770 (1977-07-01), DeHaes et al.
patent: 4285999 (1981-08-01), Olivieri et al.
patent: 4464454 (1984-08-01), Vogt
patent: 4808509 (1989-02-01), Vetvloet et al.
patent: 4824761 (1989-04-01), Sturgis et al.
patent: 4992353 (1991-02-01), Rodakis et al.
patent: 5888693 (1999-03-01), Meschter et al.
patent: 6045965 (2000-04-01), Cournoyer et al.
“Image Transfer Material”Research DisclosureNo. 15513, Mar. 1977, pp. 8 & 9.
Norris Philip R.
Parsons Harry R.
Plummer William T.
Preissler Donald W.
Wadja Robert J.
Cheatham Tim A.
Maccarone Gaetano D.
Polaroid Corporation
Schilling Richard L.
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