Method for ejector to ejector pixel height normalization

A method of calibrating ejectors in an ejector head of a three-dimensional object printer, the ejector head having a plurality of ejectors configured to eject drops of material towards a surface, the method comprising:

• operating the plurality of ejectors to eject drops of material to form a plurality of pixels corresponding to a test pattern on the surface, each ejector in the plurality of ejectors being operated to form a group of directly adjacent pixels in a cross-process direction in the test pattern, each group of adjacent pixels being at least n pixels wide in a cross-process direction for the printer;
• operating a sensor to measure heights of pixels for each group of adjacent pixels in the test pattern;
• and
• adjusting an operation of the plurality of ejectors by adjusting at least one ejector in the plurality of ejectors to change a mass of each drop subsequently ejected by the at least one ejector, the adjustment to the at least one ejector is made with reference to the measured heights for the group of directly adjacent pixels in which the at least one ejector formed pixels to normalize heights of layers of material formed by the plurality of ejectors.