Fluid ejection module mounting

A method of aligning a fluid ejection module mounting apparatus, comprising:

• attaching a plurality of clamp assemblies to a frame, each clamp assembly including a contact surface that contacts the frame and one or more contact points having a position adjustable relative to the surface;
• attaching a plurality of ejection modules to a plurality of module mounts with different ejection modules attached to different module mounts, wherein each module mount comprises one or more alignment datums, and wherein each ejection module comprises a nozzle surface having a plurality of nozzles;
• for each respective module mount, after attaching a respective clamp assembly to the frame and after attaching a respective ejection module to the respective module mount, securing the respective module mount to the respective clamp assembly such that the one or more alignment datums engage the one or more contact points;
• and
• bringing the nozzles of at least one ejection module attached to a respective module mount attached to a respective clamp assembly into a desired alignment with the frame by adjusting the position of the one or more contact points of the respective clamp assembly.