Patent ID: 7435528

Claim:
A process comprising: providing a light source emitting ultraviolet light within the wavelength range of about 190 to about 260 nm; providing a target having a surface; imagewise illuminating at least a portion of a target surface with the emitted light; and disposing in at least a portion of the emitted light between the light source and the target surface a polycyclic fluoroalkane such that at least a portion of the emitted light illuminating the target surface is transmitted through the polycyclic fluoroalkane, the polycyclic fluroalkane having an F/H ratio of 0.5 or less but greater than zero, a refractive index of ≧1.50 and an absorbance at 193 nm of 2.0 cm −1 or less wherein said polycyclic fluoroalkane is represented by the structure I where R f is a fluorinated alkyl radical of 1-10 carbons that are linear, branched, or cyclic; R′: is H, F, an alkyl radical of 1-6 carbons that are linear, branched, or cyclic, or a fluorinated alkyl radical of 1-6 carbons that are linear, branched, or cyclic; each R″ is independently H or F; n=0 or 1; and m=1 or 2 provided that m is not 2 when n=0.