公开(公告)号：US20160150117A1

公开(公告)日：2016-05-26

申请号：US14950501

申请日：2015-11-24

Applicant: Konica Minolta, Inc.

Inventor： Tatsuya FURUTA ,  Shota Sakurai ,  Kazuhiro Saito ,  Tomohiro Kawasaki ,  Kazuteru Ishizuka

IPC: H04N1/04 ,  G06K15/14 ,  G03G15/00 ,  H04N1/00

CPC classification number: H04N1/0414 ,  G03G15/5025 ,  G03G15/5058 ,  G03G2215/00455 ,  G03G2215/0135 ,  G03G2215/0164 ,  G03G2215/0429 ,  G03G2215/0468 ,  G03G2215/047 ,  G03G2215/0478 ,  G03G2215/048 ,  G06K15/14 ,  H04N1/0032

Abstract: An image forming apparatus includes: an image forming section including a rotational member and configured to form an image on the long sheet; a density unevenness cycle acquiring section configured to acquire a cycle of a density profile that represents density variation in a sub scanning direction; a cycle control section configured to operate such that, in a case where a same image is continuously formed on the long sheet, a length of the image in the sub scanning direction is an integer multiple of a cycle length that corresponds to one cycle of the density profile; and a density correction section configured to form a patch image for correction that has a size greater than the cycle length of the density profile on the image bearing member, and perform density correction using correction data created based on a detection result regarding the patch image for correction.

Abstract translation: 一种图像形成装置包括：图像形成部分，包括旋转部件，被配置为在长片材上形成图像; 密度不均匀循环获取部，被配置为获取表示副扫描方向上的浓度变化的密度分布的周期; 循环控制部，被配置为如下操作：在长片上连续形成相同的图像的情况下，副扫描方向上的图像的长度为周期长度的整数倍，该周期长度对应于 密度分布; 以及密度校正部，被配置为形成具有大于图像承载部件上的密度分布的周期长度的校正的贴片图像，并且使用基于关于贴片图像的检测结果创建的校正数据来执行浓度校正 更正。