Abstract: A gripping unit for gripping a paper from a top surface of a stack includes a first and second wheel having rotation axes that are mainly parallel with respect to each other. The first wheel is arranged to exert a friction force on sections of a paper during removal of the paper. The gripping unit further comprises an actuator on which the first wheel is mounted for moving the first wheel in a moving direction towards the second wheel. In addition, the gripping unit comprises an airflow generator for providing an air flow following a flow path directed substantially along the moving direction of the first wheel towards a side surface of the stack and upon approaching said side surface directing away from the stack in a direction substantially transverse with respect to the top surface of the stack.