| 摘要 |
951,928. Photographic light-sensitive materials. KODAK Ltd. March 23, 1960 [March 24, 1959; April 24, 1959], No. 10231/60. Heading G2C. A support bears a layer of non-light-sensitive colloidal binder and then a layer not more than 5 microns thick of an organic polymeric material capable of being insolubilised by exposure to light and which before exposure is capable of being removed by a solvent which does not remove the underlying colloidal binder. Such exposure and solvent treatment forms an image and visibility thereof is attained by a wide variety of dye, pigment, transfer, swelling and such-like systems, mainly of office copying machine type. In most variations the first layer is hydrophilic and the second, which may include sensitiser, hydrophobic. Numerous colloidal binders are mentioned and extensive description of various light-sensitive polymers and sensitisers therefore is provided. Details are provided in 29 examples illustrating various materials and methods of use all involving the colloid areas uncovered by dissolution of the polymer from unexposed areas for image formation. Specifications 695, 197, 713, 949, 717, 705, 717, 711, 717, 712,770, 222, 820, 173, 825, 948 and 846,908 are referred to. |
