Minnesota Mining and Manufacturing Company

Imation Corporation

Nicholas E Grzeskowiak

James B Philip, Jr

Andrew W Mott

Keith A Penfound

Rachel J Hobson

A method of chemical sensitisation which comprises providing a silver halide emulsion containing negative-acting silver halide grains, and adding to said silver halide emulsion a sulphur releasing organic polymer having multiple sulphur releasing groups per polymer molecule. The polymer preferably has at least 10 sulphur releasing groups per molecule which may be selected from thiocarbonate, dithiocarbonate, trithiocarbonate, dithioester, thioamide, thiocarbamate, dithiocarbamate, thiouram, thiourea, dithiooxamide, thioketone and trisulphide.

Chemical sensitisation of silver halide emulsions

A process for the preparation of a photographic emulsion containing tabular silver halide grains having an aspect ratio in the range from 12:1 to 3:1 and a monomodal narrow size distribution comprising:

Process for the preparation of photographic silver halide emulsions

Photographic elements adapted for high intensity exposures of short dwell time, e.g. laser scanning which comprise a chemically working silver halide emulsion in which the silver halide grains were formed in the presence of one or more complex compounds of rhodium (III) having 3, 4, 5 or 6 cyanide ligands attached to each rhodium ion.

Silver halide photographic materials having rhodium cyanide dopants

Photographic elements comprising a negative working silver halide emulsion containing high intensity reciprocity failure reducing amounts of dopant comprising both ruthenium and iridium ions.

High contrast scanner photographic elements employing ruthenium and

Photographic elements which may be imaged by laser scanners emitting in the near infrared without the formation of interference fringes comprising a support bearing one or more layers of a silver halide emulsion having grains of an average diameter of no more than 0.4 micron, the element including one or more of:

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Harlow, United Kingdom

Nicholas E Grzeskowiak