Loader for a printer for printing flat articles and printer provided with such a loader

Loader (1) for a printer for printing, on flat articles, the loader (1), which delimits a magazine (9) for storage of the articles in a stacked condition, being provided internally with a pivoting member (4), arranged to hold, in the active position of the loader (1), the articles (2) to be printed in bearing contact with a drive element (5), through an opening (7) provided in a wall of the magazine (8), for expulsion of the articles (2) to be printed characterized in that the pivoting member (4) is provided with a counterweight (6) to form an assembly exerting a substantially constant bearing force (P) on the article or articles (2) to be printed, this force (P) being self-positioning in the course of emptying the loader (1) by moving along one of the articles (2) to be printed in a direction (D1) generally opposite to the direction (D) of expulsion of the articles from the loader.