The invention is a method for omnidirectional recognition of recognizable characters in a captured two-dimensional image. The control device sets a setting value a setting value of the motor to be held for a predetermined setting time. The tubes of different layers, however, extend in a preferably crosswise manner to one another. A second outer portion comprises a fluid outlet and a second exterior cooling surface. The efficacy of the stuffing process may be enhanced by imparting reciprocating motion to the drum in addition to rotational movement, and by providing protuberances on the interior surface of the drum.