Controlling cuts in an inner liner for a group of cigarettes

1. A device for detecting cuts in an inner liner in a cigarette packaging machine, comprising:

a first, second and third optical detector, each of said optical detectors, having a light emitting source and a light detector;

said first, and third optical detector being separated by a maximum distance from each other which is less than the length of an inner liner for a group of cigarettes in a cigarette packaging machine; and wherein the second optical detector positioned between the first and third optical detectors;

wherein said first and third optical detector are reflective detectors and said second optical detector is a transmissive detector,

said first and said second optical detector operably connected to an evaluation unit, said evaluation unit receiving a signal representing the conveying speed of said inner liner.

2. The device for detecting cuts in an inner liner of claim 1 wherein said second optical detector is positioned between said first and said third detector at a predetermined distance, said inner liner having a desired cut at said predetermined distance.

3. A device for detecting cuts in an inner liner in a cigarette packaging machine, comprising:

an inner liner having a formed cut at a predetermined position;

a first, second and third optical detector having a light source and a sensor;

said second optical detector being a transmissive detector and said first and third optical detector being reflective detectors;

said second optical detector positioned between said first and said third optical detector at said predetermined position such that said first, second and third detector are active when a properly cut said inner liner for a group of cigarettes in a cigarette packaging machine is positioned under said detectors;

said first and second optical detector operably connected to an evaluation unit which is provided with a signal representing the conveying speed of said inner liner.