Patent ID: 8485644

Claim:
A method of adjusting positions of recording heads of an inkjet recording apparatus which records an image by jetting inks in plural colors on a recording medium, comprising the steps of: (1) fitting a plurality of recording heads for jetting ink in a same color to a module base to construct a recording-head module for said same color, wherein the recording-head module includes the plurality of recording heads as an integrated unit, and the integrated unit is mounted to the inkjet recording apparatus, adjusting positions of the respective recording heads in a first direction which is a lateral direction of the recording medium and a second direction orthogonal to the first direction on the module base, and making the recording-head module capable of integrally attaching and detaching the plurality of recording heads; (2) performing step (1) for each of the plural colors other than said same color and constructing a plurality of recording-head modules for the plural colors other than said same color; (3) mounting the plurality of recording-head modules onto a fitting surface and adjusting positions of the respective recording-head modules in the first direction and the second direction on the fitting surface; and (4) replacing the integrated unit when at least one of the plurality of recording heads is replaced.