Abstract: Dye-donor element for use according to thermal dye sublimation transfer comprising a support having thereon a dye layer containing a duplo-arylazoaniline dye incorporating two or more arylazoaniline chromophore units which are linked to each other by means of chemical bonds or linking groups.

Abstract: A strip of light sensitive material wound in a coil onto an open-ended core 2 is package in tearable light tight wrapping material 6, 7 which protects the rolled web while leaving an exterior end 3 of the coil exteriorly accessible. The light tight wrapping material 6, 7 is tearable by pulling on the exterior end 3 to commence unwinding of the coil from the core. The wrapping material is formed with a circumferential portion 6 and two end flange portions 7 which latter have their inner margins 11 tucked within the open ends of the core 2 and light-tightly sealed thereto.