Abstract: There is described a device for the picture-providing diagnosis of tissue with the selective application of two diagnosis methods, specifically an operating mode for the picture-providing white light diagnosis and an operating mode for the picture-providing auto-flourescence. The device has a light source whose light is led to the tissue via an endoscope, wherein in the endoscope there is arranged a picture transmission unit which leads the picture of the tissue to a color camera. The color camera comprises three sensors allocated to the color regions red, green and blue which are in connection with a picture processor unit which provides a monitor with the picture signals.

Abstract: Apparatus for stacking sheets comprises a collecting bin with a front stationary abutment and a rear limiting element adjustable to various sheet size ranges. A first deflecting roller, adjustable in the entrance direction of the sheets and mounted on a rear limiting element, provides support for a transport belt transporting the sheets. The rear limiting element is mounted on a support which is movable in the entrance direction by means of two parallel threaded spindles rotatable by a stepping motor. A second deflecting roller which is associated with the outer side of the transport belt facing the sheet stack is arranged on the support, whereas the first deflecting roller is located on the inner side of the transport belt. Adjacent to the second deflecting roller, a stationary deflecting roller is arranged such that the transport belt is guided along an S-shaped path.