Improved infrared laser recording film

Claim 1

A photographic recording element containing an infrared absorbing dye layer comprising a support, at least one silver halide layer coated on side of the support, and coated on the other side of the support a hydrophilic binder layer containing an absorbing amount of a dye with the following structure: wherein R is hydrogen, alkyl, cycloalkyl, aryl, substituted aryl, F, Cl, or Br; R₁ and R₂ are independently -(CH₂) n₁ -X wherein X is H, F, Cl, Br, phenyl, methyl, ethyl, cycloalkyl of 3 to 7 carbon atoms or alkoxy of 1 to 3 carbon atoms, and n₁ is an integer of 2 to 6; Z₁ and Z₂ independently represent the atoms necessary to complete an indole, benzindole or naphthindole nucleus or methyl, ethyl, methoxy, ethoxy, hydroxy, F, Cl or Br substitutions thereof; R₅, R₆, R₇ and R₈ each independently represent methyl, ethyl, or R₅ and R₆ or R₇ and R₈, when taken together with the carbon atoms to which they are attached may form a 5- or 6-membered cycloalkyl group; n is an integer from 2 to 4; and y is a counter ion.