DEVICE FOR EXPOSING PHOTOPOLYMER PRINTING PLATES

    公开(公告)号:CA2046862A1

    公开(公告)日:1990-08-29

    申请号:CA2046862

    申请日:1990-02-21

    Applicant: BASF AG

    Abstract: O.Z. 0050/40603 An apparatus for exposing photopolymeric printing plates consists of a stand (1) having integral UV fluorescent tubes (7b), an obliquely arranged glass support sheet (4) ¢sic! for supporting the printing plates, the support sheet being equipped with an orthogonal pattern (25, 26) of grooves, connected to vacuum pumps, a matt black cloth (9) arranged between the UV fluorescent tubes and the support sheet, a lid (2) which is pivotable about a pivotal point (6), is connected to the stand and has integral UV fluorescent tubes (7a), the lid being capable of being swivelled upward on the one hand and laid flat on the stand on the other hand, and a means (4) which moves to and fro via toothed racks (5) and is intended for fold-free and bubble-free positioning and simultaneous cleaning of a vacuum film (3), the vacuum film giving a vacuum-tight seal against the support sheet when the printing plate is placed on top. Fig. 1

    Method and device for washing exposed printing plates

    公开(公告)号:DE3713329A1

    公开(公告)日:1987-11-05

    申请号:DE3713329

    申请日:1987-04-21

    Applicant: BASF AG

    Abstract: By means of solvents coming from feeding members (5) and of accompanying brushes (6), the unexposed parts of a printing plate (1) are dissolved from the photo-polymerisable layer (A). In addition, the layer is subjected to another washing procedure (B) by means of a nozzle arrangement (10) in order still to dissolve fine parts of the layer not caught during the first washing. The washed printing plates are then cleaned (C) by means of jet sprays of solvent (16, 17) and subsequently dried with the aid of a hot-air blower (20) (D).

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