Patent ID: 8587743

Claim:
An inkjet image-drawing device comprising: a head module which comprises one or a plurality of inkjet heads for forming a pattern by executing ink ejection processing on a substrate; a head module moving means which moves the head module in at least one of a main scanning direction and a sub-scanning direction; a substrate support stage which supports the substrate to be placed lower than the head module; a substrate support stage moving means which comprises: a first linear moving means which linearly moves the substrate support stage in a first standard vector direction; a second linear moving means which linearly moves the substrate support stage in a second standard vector direction independent from the first standard vector direction; and a rotation moving means which rotationally moves the substrate support stage with an axis of a vector direction parallel with a normal direction to the first and second standard vector directions; an image pickup means which picks up an image on a surface of the substrate placed on the substrate support stage; and an alignment adjusting means which picks up images of a plurality of alignment markers arranged on the substrate with the image pickup means, and moves the substrate support stage with the substrate support stage moving means based on a result of the picking up images to adjust the alignment of the substrate, wherein the image pickup means comprises at least a single camera fixedly disposed, outside of a reachable moving range of the head module moved by the head module moving means, in the vector direction of the first linear moving means, on the main body of the inkjet image-drawing device, and at least a single camera fixedly disposed outside of a reachable moving range of the head module moved by the head module moving means, in the vector direction of the second linear moving means, on the main body of the inkjet image-drawing device; wherein the substrate support stage comprises a plurality of markers for measuring a standard camera position, and two cameras of the image pickup means is arranged to be capable of commonly photographing of at least one marker of the plurality of reference markers; wherein the inkjet image-drawing device further comprises a calculation means which associates with coordinates between the two cameras of the image pickup means, based on positional coordinates of a result of photographing of the reference markers by the image pickup means; and wherein the calculation means calculates images picked up by the image pickup means, and by assuming any one of the two cameras to be a standard camera, converts coordinates of another camera to a coordinates system of the standard camera.