Patent ID: 9024989
Filing Date: 2015-05-05
Classification: B41J,G03G,H04N

Abstract:
1. A registration adjustment method for an image forming apparatus, the image forming apparatus including: an imaging process unit that forms a color visible image by writing a latent image on each of a plurality of image carriers with laser light from an optical scanning device, developing the latent images on the image carriers to form visible images of respective colors on the image carriers, and superimposing and transferring the visible images of respective colors on the image carriers onto a recording medium; and a registration correction unit that detects displacement of test patterns of each color in the color visible image as a registration adjustment value and corrects positions of the superimposed and transferred visible images of respective colors based on the registration adjustment values, the registration adjustment method comprising: a registration step of measuring and determining the registration adjustment value for each color; and a printing step of correcting the registration adjustment value for each color determined in the registration step so as to print the color visible image, wherein the registration step and the printing step include: wherein, during the printing step, wherein a registration correction operation step of correcting the registration adjustment values is executed based on a change in the temperature detected by the first temperature detecting unit and a change in the temperature detected by the second temperature detecting unit.