An inkjet printer that has a fixative reservoir with at least one outlet formed in a wall section that partially defines the reservoir. The printer also has a pagewidth printhead having designated nozzles for printing the ink fixative. The fixative reservoir has fluid conduits at least partially defined in the wall section exterior such that the at least one outlet is in fluid communication with the designated nozzles. Forming the reservoir and the fluid distribution conduits to the printhead in the same component reduces the assembly time and complexity.