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    • 4. 发明授权
    • Sheet processing apparatus and image forming apparatus having same
    • 片材处理装置及其成像装置
    • US07520497B2
    • 2009-04-21
    • US11082808
    • 2005-03-18
    • Tsuyoshi MoriyamaTakako HanadaMasayoshi TairaAkinobu NishikataHiroaki Tomiyasu
    • Tsuyoshi MoriyamaTakako HanadaMasayoshi TairaAkinobu NishikataHiroaki Tomiyasu
    • B65H7/02
    • B26D7/2628B26D5/00B26F1/02B65H9/002B65H9/103B65H2301/331B65H2301/44318G03G15/6538G03G2215/00818
    • The invention comprises registration roller pairs which detect a skew amount of a sheet being conveyed; registration roller pairs which perform skew correction of the sheet while the sheet is being conveyed; a punch unit which performs punching of the sheet; a punch-unit driving portion which drives the punch unit; a sheet-edge detecting sensor which performs detection of a sheet edge in a direction intersecting with a sheet conveyance direction; a punch-unit moving device which moves the punch unit in the direction intersecting with the sheet conveyance direction; a sheet detecting sensor which performs detection of a sheet position in the sheet conveyance direction; and a controller portion which performs control such that after skew of the sheet is corrected by the registration roller pairs in accordance with detection results of skew amount sensors, and punching is performed on the sheet by the punch-unit moving device and the punch driving portion in accordance with a detection result of the sheet detecting sensor.
    • 本发明包括检测被输送的片材的偏斜量的定位辊对; 在片材被输送时执行片材的歪斜校正的定位辊对; 执行片材冲压的冲压单元; 打孔单元驱动部,其驱动冲头单元; 片材边缘检测传感器,其沿与片材输送方向相交的方向进行片材边缘的检测; 冲头单元移动装置,其沿与纸张输送方向相交的方向移动冲头单元; 片材检测传感器,其执行纸张输送方向上的纸张位置的检测; 以及控制器部分,其执行控制,使得根据偏移量传感器的检测结果,通过对位辊对校正片材的歪斜之后,并且通过冲头单元移动装置和冲头驱动部分对片材进行冲压 根据片材检测传感器的检测结果。
    • 6. 发明授权
    • Image forming apparatus and control method for the same
    • 图像形成装置及其控制方法
    • US08260162B2
    • 2012-09-04
    • US13370632
    • 2012-02-10
    • Akinobu Nishikata
    • Akinobu Nishikata
    • G03G15/00G03G15/20
    • G03G15/50G03G15/2042G03G2215/00426G03G2215/00734G03G2221/1639G03G2221/1642
    • When image forming is to be successively performed on recording sheets having different sizes, an image forming apparatus suitably executes adjustment processing on a fixing apparatus or the like used in the image forming, and maintains image quality as well as suppresses a drop in productivity. To accomplish this, the image forming apparatus specifies the size of a printing material onto which an image is to be performed, and with use of the specified printing material size and the size of printing materials on which images have been formed immediately previously, determines whether it is necessary to execute adjustment processing for maintaining image quality. Specifically, adjustment processing is executed only if the size of the printing material on which an image is to be formed is greater than the size of the printing materials on which images were formed immediately previously.
    • 当在具有不同尺寸的记录片材上连续执行图像形成时,图像形成装置适当地执行对图像形成中使用的定影装置等的调整处理,并且保持图像质量以及抑制生产率的降低。 为了实现这一点,图像形成装置指定要在其上执行图像的打印材料的尺寸,并且使用指定的打印材料尺寸和紧接在其上形成图像的打印材料的尺寸,确定是否 需要执行用于保持图像质量的调整处理。 具体而言,仅当要形成图像的打印材料的尺寸大于紧接着形成图像的打印材料的尺寸时才执行调整处理。