Apparatus for ultraviolet drying and/or curing of solvent-free ink on three-dimensional articles

Apparatus for ultraviolet drying and/or curing solvent free ink on three-dimensional articles, comprising a housing, an endless conveyor arranged at least partly inside said housing and having at longitudinally spaced locations baskets for carrying articles bearing ink to be dried and/or cured, said conveyor having a pathway including, in elevation, at least one bend or loop inside said housing, said bend or loop having an axis of curvature, an elongate ultraviolet lamp disposed proximate to said bend or loop for irradiating a predetermined sector of each article passing over said bend or loop with said sector including a portion of each article being disposed with a respective basket, means for swivelly mounting said baskets on said conveyor about axes parallel to said axis of curvature, so that as the said baskets pass over said bend or loop the portion of the predetermined sector exposed to said elongate ultraviolet lamp varies and said baskets being of perforate construction with perforate and nonperforate portions arranged so that shadows due to the nonperforate portions continuously move along the predetermined sectors of the articles thereby avoiding constantly obstructed spots in the predetermined sectors.