Eastman-kodak Company

Brian S White

Roger L Lok

David B Bailey

Robert O James

Roger L Klaus

Jon N Eikenberry

Jerzy Z Mydlarz

George L Oltean

This invention relates to silver halide photographic element comprising a silver halide emulsion chemically sensitized in the presence of an isothiazolin-one compound represented by the formula ##STR1## wherein R.sup.1 is a substituent; and Z is a substituted or unsubstituted saturated ring, wherein the isothiazolin-one compound was added after precipitation of the emulsion.

Silver halide photographic elements with reduced fog

A method of making a transparent magnetic recording layer which comprises forming a concentrated aqueous magnetic dispersion (A) of from 10 to 50 percent by weight ferromagnetic particles having a specific surface area of at least 30 m.sup.2 /gm and from 0.5 to 20 percent by weight of a dispersing agent; adding the concentrated aqueous magnetic dispersion (A) to a viscosity increasing hydrophilic polymer in water (B) such that the concentration of the hydrophilic cobinder is from 0.5 to 3 percent by weight based on the total weight of (A) and (B); diluting the resulting dispersion (A) plus (B) with water to give a dispersion (C) having a concentration of from 0.5 to 5 percent by weight of ferromagnetic particles; preparing a final dispersion by adding to the dispersion (C) from 20 to 200 parts per 100 parts of dispersion (C) of an aqueous deionized gelatin solution having a pH value from 7 to 10 and containing from 2 to 15 percent by weight of gelatin and coating the final dispersion onto a substrate to give a dry coverage of from 700 mg/m.sup.2 to 3000 mg/m.sup.2 of solids.

Method of making transparent magnetic recording layers

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Rochester, NY, United States of America

Brian S White