pivot arm 60 is fixedly attached to pivot shaft 64 which is pivotally held between right support 66 and left support 68 the pivot arm 60 and pivot shaft 64 pivot together about the axis of pivot shaft 64 right and left supports 66 and 68 are fixedly attached to base 12 and are in turn fixedly attached to each other by connecting member 70 pivot arm 60 also includes a solenoid engaging portion 72 with an adjustment device 74 as best seen in fig4 adjustment device 74 preferably includes a screw threaded bar 76 engaging a screw threaded aperture not shown with nut 78 engaging screw threaded bar 76 atop solenoid engaging portion 72 nut 78 securely holds screw threaded bar 76 at any position to which the screw threaded bar 76 is adjusted solenoid assembly 26 is permanently attached to frame 24 of the photographic printer as shown in fig1 solenoid assembly 26 preferably includes base 80 upright members 82 and 84 top plate 86 fasteners 88 and solenoid 90 base 80 is permanently attached to frame 24 of the printer and upright members 82 and 84 are fixedly attached to base 80 top plate 86 is mounted on top of upright members 82 and 84 by screw threaded fasteners 88 solenoid 90 is.