A scanning reader of an optical code placed on an article in movement and a method of scanning said optical code by means of said reader

摘要

A scanning reader (1) of an optical code (7) placed on a front wall (5) of an article (2) in movement comprises generators (10, 13) that form at least one first and one second light beam (8 alpha , 8 beta ) lying on planes inclined by a first and by a second prefixed angle ( alpha , beta ) with respect to the front wall (5) so as to explore a first and a second area of the front wall by means of at least one first and one second scanning line (81, 82) and read said optical code (7) within an overall distance range, along the direction of forward movement of the article (2), greater than the useful range of reading distance that can be reached by one light beam only.