Tank for the treatment of offset plates by ultrasounds
AssigneePhotomeca S.A.
InventorMario Ferrante
Life of this patent
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Abstract
The present invention relates to a tank for the treatment of offset plates by ultrasounds. An elongated rectilinear passageway is limited by a lower wall constituted by a vat with a peripheral flange and by an upper wall constituted by an inverted vat with a peripheral flange, a seal incorporating an elastic lip being tightened between inlet and outlet openings, a bath reservoir being formed in one of the vats to contain an ultra-sound generator, so that the plates to be treated, propelled by pairs of rollers, pass through the developer bath whose volume is minimum, in a straight line.
Claims10
A tank incorporating an ultra-sound generator for the treatment, in a bath of developer stirred by ultra-sounds, of plates with photosensitive layer passing through this bath,
- wherein it comprises an elongated rectilinear passageway having a lower wall and an upper wall containing therebetween the developer bath, with an inlet opening at one end and an outlet opening at the opposite end, these openings being spaced apart by a length shorter than the length of the shortest plate to be treated, at least one supple lip seal being disposed in each of these openings, at least one bath reservoir containing the ultra-sound generator being in communication with this elongated rectilinear passageway by a communicating opening, means for propelling the plates along the passageway being placed near the inlet and outlet openings.
Dependencies are inferred from the claim text.