Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Antihalation or filter layer containing
Reexamination Certificate
1999-05-26
2002-05-28
Baxter, Janet (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Antihalation or filter layer containing
C430S507000, C430S510000, C430S511000
Reexamination Certificate
active
06395463
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to a method for improving the image quality of integral, lenticular, multilayer, color photographic elements and more particularly, for an improved method for reproducing three-dimensional (depth or stereoscopic) or images which contain motion or a combination thereof and methods for manufacturing such elements.
BACKGROUND OF THE INVENTION
Fogel et al, in U.S. Pat. No. 5,729,332, describes a method and apparatus for printing lenticular images which includes imposing lines of information in the form of segmented images of a scene onto a light sensitive material. However, he does not disclose the characteristics of the light sensitive material, or its composition or method of manufacture.
Young et al, in U.S. Pat. No. 5,699,190, describes a lenticular media having spatially encoded portions within the media used for precisely determining the location of the lenticules within the media.
Oehlbeck et al, in U.S. Pat. No. 5,633,719, describe a lenticular print having image bundles and an apparatus for aligning and centering the image bundles under the lenticules in a composite overlay assembly process by encoding angular alignment elements into the photographic material during exposure of the element.
Slater et al, in U.S. Pat. No. 5,822,038, describes a method and apparatus for stretching, aligning and printing a plurality of images onto lenticular media having spatially encoded portions to a silver halide negative material as an alignment process prior to exposure of the negative and the lenticular media in order to correct for pitch errors between the negative and the lenticular media, but does not describe the nature, composition, nor method of preparation of the integral lenticular imaging element.
Taguchi et al, in U.S. Pat. No. 5,539,487, and a divisional U.S. Pat. No. 5,850,580 describes a method and apparatus for recording stereoscopic images onto an integral lenticular media using a scanning exposing device, but does not describe the nature, composition, nor method of preparation of the integral lenticular imaging element.
Howe et al, in U.S. Pat. No. 3,751,258, describe an ‘auto-stereographic’ print in which the integral, multilayer color photographic lenticular image also contains an integral reflective backlayer. Since the reflective backlayer is applied on the side opposite the lenticular surface as part of the preparation of the element, the element must then be exposed through the lenticular support. Additionally, the element does not contain an anti-halation layer.
Telfer et al, in U.S. Pat. No. 5,279,912, describes an integral, thermal lenticular imaging media in which the image is developed after heating via exposure with an infra-red light emitting laser.
Morton, in U.S. Pat. No. 5,689,372, describes an integral lenticular imaging element having an anti-halation layer positioned on the surface of the lenticules of the media, but does not describe the composition nor method of application of the anti-halation layer.
Morton, in European Patent Application EP 0 780 728 A1, describes an integral lenticular imaging element having an anti-halation layer positioned on the surface of the media opposed to the lenticules of the media but does not describe the composition nor method of application of the anti-halation layer.
Morton, in U.S. Pat. No. 5,639,580, describes an integral lenticular imaging element having a non-specular reflective backlayer positioned behind the integral image which reflects more than 80% of the light reaching the reflective layer.
Kistner, in U.S. Pat. No. 5,013,621, describes a one part coating composition for providing a white reflective backlayer to lenticular images wherein the backlayer is applied after exposure, chemical development and drying.
Shiba in Japanese Pat. No. 4,097,345 describes a method for applying an anti-reflection overcoat to the lenticular surface of an integral color photographic element having a lenticular support.
Current color silver halide color print materials utilize three color forming layers comprised of a red light sensitive, cyan dye forming layer; a green light sensitive, magenta dye forming layer and a blue light sensitive, yellow dye forming layer. These color print or display materials -reproduce images which are 2-dimensional representations of the original 3-dimensional scene. Attempts to manufacture images in which the viewer perceives a sense of depth (or 3-dimensionality) or, images in which the viewer perceives a sense of motion have been demonstrated by several manufactures using different manufacturing processes.
Existing lenticular imaging methods and materials typically use non-integral or integral silver halide photographic elements. Other methods of lenticular imaging have also been commercialized which use various printing techniques such as lithography, ink-jet, thermal dye transfer or dye sublimation. The characteristics of these processes are such, however, that the quality of the final lenticular image is restrained by the methods and the resolution of the art which subsequently limit the number of images capable of being uniquely resolvable under each lenticule by the viewer.
Non-integral silver halide based elements are those in which the multiplexed depth or motion images or combination of images are first exposed onto a positive producing 2-dimensional print material such as Kodak Duraclear™, Kodak Duraflex™, Kodak Duratrans™ or Kodak Ektachrome™ Sheet Films. For those negative working materials, a negative must first be prepared using a film such as Kodak Vericolor Sheet Film™. The multiplicity of images are first segmented into the desired number of views (more than 2, but typically less than 50) and then interlaced (i.e.: view 1, view 2, . . . view n; view 1, view 2, . . . view n) in a computer to provide the desired sequence of images in the final lenticular image print. The digitized print information is then exposed (written) onto the negative using a drum writer, such as that manufactured by Dice America. Digital film writers such as this use light valve technology (LVT) or, more recently, light emitting diode (LED) technology to expose the digital image information onto the negative material or the ‘chrome’ (positive) material if a positive is desired.
Drum writers such as these create image pixels of red, green and blue exposure information by modulating the light output of the LED's in accordance with the position of the write head in concert with the composition of the original scene. The write head is positioned over the sensitized material which is clamped onto a spinning drum. As the drum spins, the digitized information from the original scene is converted to a series of pulses of red, green and blue light and tightly focused into a narrow beam which exposes the material in a series of lines. This direction of exposure is known as the ‘fast scan’ direction. After each rotation of the drum, the position of the write head is moved in a direction perpendicular to the direction of the spinning drum and the exposure process repeated. This is known as the ‘slow scan’ direction.
After the entire image has been exposed onto the material it is removed from the drum and processed to develop the latent image. If the material is a color negative type material, then the Kodak Flexicolor C41™ process would be used to develop the lines of image information. This master negative can now be used in a conventional ‘contact printer’ to expose the final negative print material, such as Kodak Duraclear™. After exposure of the master negative onto the print material, the print is processed. A preferred process for the Kodak Duraclear™ material is the Kodak Ektacolor RA4™ process. The image in this material can be unrecognizable as it is designed to be viewed using a lenticular lens screen.
To make the final lenticular image, the print is first coated with an adhesive material, then laminated to a lenticular screen having the same pitch as the images in the print. After lamination, the image must be aligned before the adhesive takes hold and pre
Baxter Janet
Eastman Kodak Company
Leipold Paul A.
Walke Amanda C.
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