Coating apparatus – With printing
Patent
1982-06-09
1983-08-23
Lawrence, Evan K.
Coating apparatus
With printing
101232, 118236, 118239, 118249, B05C 1100
Patent
active
043997678
ABSTRACT:
An apparatus for varnishing a sheet being fed from a sheet fed printing press into a delivery unit, the sheet being conveyed by an endless loop conveyor made up of a pair of laterally spaced conveyor chains. Cross members extend between the chains at regular intervals carrying grippers for the leading edge of successive sheets. The chains are guided to form a delivery run and a return run spaced apart and generally parallel to one another. An applicator cylinder is journalled between the runs having an axial length which is shorter than the lateral spacing between the chains. A plate cylinder journalled in the frame outside of the return run is in rolling engagement with the applicator cylinder for supplying a varnish film thereto. A backing cylinder journalled in the frame outside of the delivery run is in rolling engagement with the applicator cylinder. The circumference of the cylinders equals the spacing between successive cross members and grippers. The applicator, plate, and backing cylinders have respective longitudinal grooves sufficiently large to provide free passage for the cross members and associated grippers. The cylinders are driven synchronously with the conveyor chains so that a sheet passing on the grippers is engaged between the applicator and backing cylinders for application of varnish to the sheet. The conveyor speed is less than the press speed in a predetermined ratio. The cylinders have a diameter less than the diameter of the cylinders in the associated press unit in the same ratio.
REFERENCES:
patent: 3931791 (1976-01-01), Preuss et al.
Lawrence Evan K.
M.A.N.--Roland Druckmaschinen Aktiengesellschaft
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