Back to results
US 5,701,823 AGranted
Self aligning tool for registering rotary printing plates and method of registering plates
OwnerJerry L. Morrisinventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerJerry L. Morrisinventor
Estimating the term…
A registering tool and registering method enables adhering of flexographic printing plates to the cylindrical surface of a rotary press plate cylinder in a manner which assures that the upper and lower edges of the plate are aligned in a strictly parallel relationship with the axis of rotation of the plate cylinder. The tool includes a channel shaped elongated bar having side walls with lower edges which are rested on the cylindrical surface of the cylinder in parallel relationship with the axis of the cylinder. A row of register pin receiving openings extends along a side wall of the bar in parallel relationship with the lower edge of the side wall. The printing plate is temporarily pinned to the bar with register pins which are inserted into registration holes in the printing plate that are equidistant from the upper edge of the plate. A first portion of the plate is then adhered to the cylinder. The plate is then unpinned and the bar is removed enabling the remainder of the plate to be wrapped around the cylinder and adhered thereto.
Apparatus for registering flexographic printing plates with a rotary printing press plate cylinder comprising an elongated bar having a row of register pin receiving openings extending along an outward facing surface of the bar which row includes at least two spaced apart register pin receiving openings, said bar having first and second plate cylinder contacting regions which are linear and parallel to said row of register receiving openings, said first and second plate cylinder contacting regions being spaced apart and being separated by an open region.
A tool for registering flexographic printing plates with a rotary printing press plate cylinder comprising an elongated bar of substantially channel shaped configuration which includes a pair of side wall portions with upper edges that are joined by a central wall portion and wherein at least a first of said side wall portions forms an obtuse angle with said central wall portion, said side wall portions having spaced apart parallel linear lower edges for abutment against a top region of a printing press cylinder while the bar extends in parallel relationship therewith, said first side wall portion of said bar having a row of spaced apart register pin receiving openings extending therealong which register pin openings are equidistantly spaced from the lower edge of said first side wall portion.
A method of mounting flexographic printing plates on a cylindrical surface of a rotary printing press plate cylinder comprising the steps of:
Dependencies are inferred from the claim text.