Silver halide light-sensitive element
AssigneeEastman Kodak Company
InventorsDonald R. Diehl, Linda J. Beattie, Gary N. Barber
Life of this patent
Estimating the term…
Loading patent…
AssigneeEastman Kodak Company
InventorsDonald R. Diehl, Linda J. Beattie, Gary N. Barber
Estimating the term…
A silver halide light sensitive photographic element comprising a support bearing on one side thereof at least one light-sensitive silver halide emulsion layer, wherein the emulsion layer or a separate hydrophilic colloid layer of the element comprises a soluble absorber dye of the following formula (I): ##STR1## wherein each M is H or a counterion; each R.sup.1 and R.sup.2 independently represents H or a photographically acceptable substituent; m+p equals from 1 to 4; n+q equals from 1 to 4; and each of r and t represents from 0 to 3. In preferred embodiments of the invention, the element comprises at least one red-sensitive silver halide emulsion layer, and a dye of formula (I) is coated on the same side of the support as the red-sensitive emulsion layer. In particularly preferred embodiments, the element comprises a support bearing on the same side at least one blue-sensitive silver halide emulsion yellow-image forming layer, at least one red-sensitive silver halide emulsion cyan-image forming layer, at least one green-sensitive silver halide emulsion magenta-image forming layer, and a dye of the formula (I) is coated in at least one of the emulsion layers or a separate hydrophilic colloid layer on the same side of the support. Dyes of formula (I) typically provide substantial absorption at short red wavelengths below about 630 nm, and photographic elements in accordance with the invention accordingly exhibit effective safelight performance for commonly used safelights emitting in the range of 560-630 nm, such as those using a Kodak Safelight Filter No. 8.
A silver halide light sensitive photographic element comprising a support bearing on one side thereof at least one light-sensitive silver halide emulsion layer, wherein the emulsion layer or a separate hydrophilic colloid layer of the element comprises a soluble absorber dye of the following formula (I):
Dependencies are inferred from the claim text.