shown in fig2 once plate 60 has been gripped by first gripper set 20 gripper holder 24 is moved radially toward blanket cylinder 3 so that the entirety of lead edge 62 contacts blanket cylinder 3 any skew or misalignment of lead edge 62 with respect to blanket cylinder 3 is corrected as the springs 26 and 27 permit lead edge 62 to align with the surface of blanket cylinder 3 lead edge 62 thus also is aligned properly with respect to plate cylinder 2 which is coaxial with blanket cylinder 3 lead edge 62 axis 102 of plate cylinder 2 and axis 103 of blanket cylinder 3 therefore all are parallel to each other second gripper set 30 having a gripper 31 a second gripper holder 32 and a track 33 is then moved to grip plate 60 in its properly aligned position gripper set 30 thus firmly grips through for example suction plate 60 in its aligned position first gripper set 20 then is released by removing the suction or by providing a positive air flow as shown in fig3 gripper holder 32 then moves in track 33 so that lead edge 62 of plate 60 fits into gap 7 next to unlocked locking mechanism 5 of plate cylinder 2 which is in an initial insertion position advantageously track 33 may be curved to aid in providing a proper insertion angle as an alternative to this insertion method track 33 may be shaped.