Patent ID: 8032041
Filing Date: 2011-10-04
Classification: B65H

Abstract:
1. An image forming apparatus that forms an image on paper, the image forming apparatus comprising: an image carrier that forms an image on paper at an image forming position provided in a paper transport path where paper is transported, a registration roller that performs transport and transport stoppage of paper to the image forming position, and a paper transport position detection portion that detects a paper transport position of paper in the paper transport path; wherein the registration roller is provided upstream in the paper transport path from the image forming position, and the paper transport position detection portion is provided upstream in the paper transport path from the registration roller, and when performing consecutive print processing to a plurality of sheets of paper, the paper transport position in the paper transport path is detected by the paper transport position detection portion for a sheet of paper that has been set in advance among the plurality of sheets of paper, a correction amount of the position of image writing to the image carrier is determined based on the detected paper transport position, correction of the image writing position is performed based on the correction amount, image forming on paper is performed at the image forming position based on the image writing position after the correction, and image forming on other sheets of paper after the sheet of paper that was set in advance is performed at the image forming position based on the image writing position after the correction.