TABULAR GRAIN EMULSIONS CONTAINING LAMINAR HALIDE STRATA

    公开(公告)号:CA2062478A1

    公开(公告)日:1992-09-12

    申请号:CA2062478

    申请日:1992-03-06

    Abstract: IMPROVED TABULAR GRAIN EMULSIONS CONTAINING LAMINAR HALIDE STRATA Photographic emulsions are disclosed comprised of radiation sensitive silver iodobromide grains, at least 50 percent of the total projected area of said silver iodobromide grains being accounted for by tabular grains exhibiting a mean tabularity of greater than 5, at least 10 percent of which are comprised of two opposed parallel major crystal faces, a host stratum having an iodide content of at least 4 mole percent, and laminar strata containing less than 2 mole percent iodide interposed between said host stratum and said opposed major crystal faces. The emulsions are characterized in that each of the laminar strata is comprised of a surface layer forming one of the major surfaces and having a thickness in the range of from 20 to 350 .ANG. and a subsurface layer located immediately beneath and in contact with the surface layer containing a hexacoordination complex of a Group VIII period 4 or 5 metal and at least three cyanide ligands.

    HEAT TRANSFER SHEETS
    9.
    发明专利

    公开(公告)号:CA1090053A

    公开(公告)日:1980-11-25

    申请号:CA283085

    申请日:1977-07-19

    Applicant: REED KENNETH J

    Abstract: A heat transfer is disclosed which is primarily intended for application of designs to textiles. The transfer comprises a flexible carrier sheet bearing a transfer layer of a polymer composition which is rendered non-blocking at normal room temperatures by a pariculate solid dispersed therein. The particulate solid is selected so that at the melting temperature of the layer it is either removed completely by sublimation or is converted to a form which does not interfere with liquid phase transfer of the design to the textile.

    10.
    发明专利
    未知

    公开(公告)号:DE2832130A1

    公开(公告)日:1979-02-01

    申请号:DE2832130

    申请日:1978-07-21

    Applicant: REED KENNETH J

    Abstract: There is provided a method for producing a stencil for use in screen printing which method comprises coating a screen mesh with liquid photopolymerizable composition, imagewise exposing the coated mesh to radiation to polymerize liquid composition on the mesh in the exposed areas, and removing unexposed liquid composition from the mesh to develop the stencil. Suitably the liquid composition is applied with the screen mesh in contact with a protective film and, after imagewise exposure, the stencil is developed by stripping of the film such that unexposed liquid remains on the film. This provides a simple method of producing a stencil which does not require highly skilled personnel.

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