Apparatus for guiding sheet material into counterrotating brushes

Abstract

Apparatus for treating sheet material in which the sheet material is transported into at least one revolving brush rotating in a direction opposite to the direction of travel of the sheet material, particularly a lithographic plate processor in which a developer solution is applied to at least one side of the plate and the brushes remove unwanted coating from the surface of the plate, in which a guide plate having a length substantially equal to the width of the sheet material is mounted immediately in front of the brush, with respect to the direction of travel of the sheet material and adjacent the surface of the sheet material, and extends into the nip of the brush to a point just behind a plane through the axis of rotation of the brush. Where both sides of the sheet are to be treated, the pair of brushes is mounted on opposite sides of the sheet, a pair of guide plates are mounted on opposite sides of the sheet, the guide plates are generally-flat plates forming a soaking chamber and developer solution conduits are provided for flooding the soaking chamber with treating solution.

Dependencies are inferred from the claim text.