Tobacco – Cigar or cigarette making – Including perforating
Patent
1990-12-07
1993-01-19
Millin, V.
Tobacco
Cigar or cigarette making
Including perforating
131904, 21912161, 21912162, 2191217, 21912177, A24C 500, A24B 714
Patent
active
051799650
ABSTRACT:
In an apparatus for forming micro-holes on a cigarette, a laser beam is divided into first and second laser beams by a two-dividing mirror. Parts of the laser beams are detected by photo detectors, respectively and the other parts of the laser beams are guided to polyhedron mirrors through first and second optical paths and divided into segment beams by the mirrors, respectively. The segments beams are focused on the corresponding cigarette so that micro-holes are formed on the cigarette. The cigarette is transferred to a dilution detection stage and the dilution is detected in mode, detection signals from the photodetector are processed and a first driving signal is generated. Thus, the two-dividing mirror is driver by a driving mechanism in accordance with the first driving signal so that the intensity of the laser beams guided in the first and second optical paths are maintained in substantially equal level. In an stable driving mode, a second driving signal which is determined in accordance with the detected dilution is applied to the driving mechanism in stead of the first driving signal so that the two-dividing mirror is a driven in accordance with the second driving signal.
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Adachi Kazuyu
Komori Mikio
Sato Shuichi
Doyle J.
Japan Tobacco Inc.
Millin V.
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