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发明公开
CN104641302A 图像形成装置 有权

图像形成装置
摘要：
一种图像形成装置，具备：对位辊(34)，其调节纸张的输送开始时间点；印刷部(4)，其在感光鼓(13)上形成彩色图像或者单色图像，在比上述对位辊(34)靠上述纸张的输送方向下游侧将上述彩色图像或者单色图像从上述感光鼓(13)转印印刷到上述纸张；以及行传感器(56)，其在比上述印刷部(4)靠上述纸张的输送方向上游侧检测上述纸张的输送位置，上述图像形成装置具备控制部(61)，上述控制部(61)基于利用上述行传感器(56)检测出的上述纸张的输送位置求出上述纸张相对于上述纸张的预先设定的基准位置的偏移量，根据上述偏移量校正上述感光鼓(13)中的上述彩色图像或者单色图像的图像形成位置而校正上述彩色图像或者单色图像相对于上述纸张的印刷位置，根据形成上述彩色图像和单色图像中的任意一种来变更上述印刷位置的校正方法。
摘要（英）：

An image formation device is provided with: a registration roller (34) which adjusts a time in point when the conveyance of paper is started; a printing unit (4) which forms a color image or a monochrome image on a photosensitive drum (13) and transfers and prints the color image or the monochrome image from the photosensitive drum (13) onto the paper on the downstream side in the conveyance direction of the paper from the registration roller (34); and a line sensor (56) which detects the conveyance position of the paper on the upstream side in the conveyance direction of the paper from the printing unit (4). The image formation device is provided with a control unit (61) which finds the amount of displacement of the paper with respect to a preset reference position of the paper on the basis of the conveyance position of the paper detected by the line sensor (56), corrects the image formation position of the color image or the monochrome image on the photosensitive drum (13) according to the amount of displacement to correct the printing position of the color image or the monochrome image onto the paper, and changes a method for correcting the printing position according to whether either the color image or the monochrome image is formed.

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