Alignment of singulated substrates

Tooling for supporting workpieces during a printing operation, comprising:

• a support tower comprising a base and a head, the head being positioned vertically above the base in use, the head being relatively moveable with respect to the base in a horizontal plane in use,
• the head having first and second support surfaces located at an upper end thereof, each of the first and second support surfaces being adapted to support a respective workpiece thereon,
• wherein the first support surface is relatively moveable with respect to the second support surface in a vertical direction in use between a printing configuration in which the first and second support surfaces are substantially coplanar in the horizontal plane, and a pre-printing configuration in which the first and second support surfaces are spaced in the vertical direction;
• and
• wherein the tooling comprises means for moving the first support surface downwards relative to both the second support surface and the base as the tooling moves from the pre-printing configuration to the printing configuration, the means is an actuator operative to drive the first support surface or a projection for abutting with a limiting member.