I have a question regarding printing images side by side on the same piece of paper at different times.
I will first print an image on the paper at an exact location using photoshop, i will then take the same piece of paper align it correctly in the printer and then print the second image right beside it but when the printing is done there is a very small "offset" between the two images. Sometimes the second image has been shifted to the right by 1 mm or up by 1mm ect. If I were to print images of just colour there would sometimes be visible white lines between them or the ink would overlap and create darker lines. This problem doesn't always arise, sometimes it DOES align perfectly to the eye.
I am wondering what this problem is called, is it fixable(with my current printer) and what type of printer is best for reducing this effect(I have seen HP DesignJets but I'm not sure that they don't have this problem)?