Printing – Printing members – Blanks and processes
Patent
1974-08-02
1976-10-05
Burr, Edgar S.
Printing
Printing members
Blanks and processes
101DIG12, B41L 3704, B41L 2906, B41L 2920
Patent
active
039838080
ABSTRACT:
Apparatus for mounting flexographic printing plates by adhesive on the printing cylinders of a multi-cylinder printing machine has a rotatable hub for supporting each of the cylinders in turn, a platform for supporting each printing plate in a plane tangential to a cylinder on the hub, the platform being movable to cause the cylinder to roll along the plate so that adhesive on the plate or cylinder causes the plate to adhere to and wrap around the cylinder, and rack and pinion gearing between the rotatable hub and the movable platform. The hub has axial and radial abutments engageable with corresponding axial and radial abutments on the cylinders, and the platform has index pins engageable in apertures in the printing plates, the apertures in each plate being in the same position relative to the area of the plate corresponding to the total design to be printed, so that the printing media on the plates on the cylinders will be in register with one another for printing purposes when the cylinders are mounted on the printing machine with their axial and radial abutments in register with one another. The pins engageable in apertures in opposite ends of each printing plate are relatively movable away from one another to enable the pins to be set apart at a distance such that all the plates are stretched to exactly the same length when mounted on the platform.
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Burr Edgar S.
Chromax Ltd.
Hirsch Paul J.
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