Abstract: A method for the exposure of photo-sensitive material to be exposed (1) is performed inside of a casing (2) sealed against light from an external light source. The material to be exposed (1) is placed in a circular arc-shaped plane (3) having a uniform distance to a center longitudinal axis (4). Laser light beams (10), derived from the laser beam (6) of a laser generator (5) and deflected with a rotatable mirror (9), are providing exposure spots on the material to be exposed (1) with point-shaped signals. The recording speed is doubled or, respectively, an image or text composition is processed in half the time previously required by deflecting the light beams (10), exiting in parallel to an axis from the collimator (8), onto at least two mirror faces (12a and 12b), disposed at an angle (11) relative to the center median axis (4).

Abstract: To reduce the engagement force in a tape transport mechanism between the drive roller and the pay-out storage winding, the pay-out storage winding and the take-up storage winding are connected by a friction arrangement and by a spring, the spring providing essentially equal forces of engagement between the respective storage windings and the drive roller, the friction force generating elements and the spring being so arranged relative to each other that the friction forces tend to be subtractive with respect to the spring forces at the pay-out winding and additive at the take-up winding.