公开(公告)号：US20210311417A1

公开(公告)日：2021-10-07

申请号：US17219686

申请日：2021-03-31

申请人： Konica Minolta, Inc.

发明人： Keigo OGURA ,  Naoto SUGAYA ,  Hiroshi YAMAGUCHI ,  Tatsuo ISHIZUKA

IPC分类号： G03G15/16 ,  G03G15/00

摘要： Provided is an image forming apparatus including an image carrier, a transfer unit, a driver, a hardware processor, an adjustment mechanism, and a speed detector. The hardware processor sets a command value. The hardware processor performs a constant-torque control based on a constant-speed drive torque detected in a constant-speed control. In the constant-torque control, the hardware processor performs a feedback control to set a reference value to an average speed of the driver during passage of a first sheet and calculate a difference from an average speed during passage of a subsequent sheet so as to derive the command value. The hardware processor determines whether a load torque increase, its factor, and/or its influence exceeds a threshold, and forcibly sets the reference value to a speed detected while a pressure between the transfer unit and the image carrier is reduced by the adjustment mechanism from the pressure during image transfer.

公开(公告)号：US20210034002A1

公开(公告)日：2021-02-04

申请号：US16942901

申请日：2020-07-30

申请人： Konica Minolta, Inc.

发明人： Shota IGO ,  Keigo OGURA ,  Naoto SUGAYA ,  Hiroshi YAMAGUCHI

IPC分类号： G03G15/00 ,  B65H5/06 ,  B65H7/02

摘要： An image forming apparatus includes the following, a pair of first conveying rollers, a pair of second conveying rollers, a driver which rotates and drives the second conveying rollers by a command value; and a controller which is able to control the driver to perform constant speed control to rotate the pair of second conveying rollers at a constant speed and to perform constant torque control to rotate the pair of second conveying rollers at a constant torque. When the constant torque control is performed, the controller starts the constant torque control with a predetermined initial torque. Based on sheet interval torque detected in a sheet interval term in which the pair of second conveying rollers do not sandwich and convey a sheet after the first sheet reaches the pair of second conveying rollers, the controller corrects the initial torque and calculates a command value for the next sheet.

公开(公告)号：US20150324005A1

公开(公告)日：2015-11-12

申请号：US14706418

申请日：2015-05-07

申请人： KONICA MINOLTA, INC.

发明人： Yuji KOBAYASHI ,  Harumitsu FUJIMORI ,  Akihiro HAYASHI ,  Shiro UMEDA ,  Kosuke MASUMOTO ,  Yasuhiro ISHIHARA ,  Hiroshi YAMAGUCHI ,  Isao WATANZABE

IPC分类号： G06F3/01 ,  G06F3/042

CPC分类号： G06F3/01 ,  G06F3/017 ,  G06F3/0425 ,  G06F3/04842 ,  G06F3/0488 ,  H04N5/232 ,  H04N9/3179 ,  H04N9/3194

摘要： An image display and photographing system includes a display device configured to display a target image on a surface; a photographing device configured to photograph the surface; a first detector configured to detect that an object moves away from a space between the surface and the photographing device; a second detector configured to detect that, after the first detector detects that the object moves away from the space, the surface is touched at a predetermined position; a third detector configured to detect that, after the second detector detects that the surface is touched at the predetermined position, the object moves away from the space; and a photographing control portion configured to control, after the third detector detects that the object moves away from the space, the photographing device to photograph the surface.

摘要翻译： 图像显示和拍摄系统包括被配置为在表面上显示目标图像的显示装置; 被配置为拍摄所述表面的拍摄装置; 第一检测器，被配置为检测物体远离所述表面和所述拍摄装置之间的空间; 第二检测器，被配置为检测在所述第一检测器检测到所述物体远离所述空间之后，所述表面在预定位置被触摸; 第三检测器，被配置为检测在所述第二检测器检测到所述表面在所述预定位置被触摸之后，所述物体远离所述空间; 以及拍摄控制部，被配置为在所述第三检测器检测到所述物体远离所述空间之后控制所述拍摄装置拍摄所述表面。

公开(公告)号：US20190177102A1

公开(公告)日：2019-06-13

申请号：US16201452

申请日：2018-11-27

申请人： KONICA MINOLTA, INC.

发明人： Hiroshi YAMAGUCHI ,  Hitoshi ASANO ,  Toshikazu HIGASHI ,  Tomonobu TAMURA

IPC分类号： B65H7/06 ,  G03G15/00 ,  B65H5/06 ,  B65H5/36 ,  B65H29/12

摘要： A paper conveyance device includes: an upstream roller and a downstream roller being arranged at an interval in a paper conveyance path; paper conveyance guides being arranged between the upstream and downstream roller in the paper conveyance path to guide both surfaces of paper along the paper conveyance path during paper conveyance; drivers that drive the upstream and downstream roller independently; and a processor that measures the load torques on the upstream and downstream roller, that judges whether or not the paper is rubbing against one of the paper conveyance guides with reference to the load torques on the upstream and downstream roller, the load torques being obtained by the processor, and that performs controlled paper conveyance with reference to the load torques on the upstream and downstream roller depending on the result of the judgment being obtained by the processor.

公开(公告)号：US20150028533A1

公开(公告)日：2015-01-29

申请号：US14337416

申请日：2014-07-22

申请人： KONICA MINOLTA, INC.

发明人： Takaki KATO ,  Yuji KOBAYASHI ,  Yuta TACHIBANA ,  Hiroshi YAMAGUCHI ,  Satoshi TESHIMA

IPC分类号： B65H7/14 ,  B65H3/06 ,  B65H7/20

CPC分类号： B65H7/14 ,  B65H3/0607 ,  B65H2511/22 ,  B65H2513/514 ,  B65H2553/414 ,  B65H2553/44 ,  B65H2701/1311 ,  B65H2701/1313 ,  B65H2801/06 ,  B65H2220/01 ,  B65H2220/03 ,  B65H2220/02

摘要： A sheet feeder picking up and transporting sheets includes a transport unit transporting sheets along a sheet transport path one by one, a gap occurrence detection unit detecting, within a predetermined section of the sheet transport path, occurrence of a gap between sheets, and a controller controlling a timing of the transport of sheets according to a result of the detection. The gap occurrence detection unit includes a first detection unit and a second detection unit. The first detection unit is configured to detect light that is emitted toward the predetermined section, reaches a converging surface thereof across the predetermined section, and converged on a receiving element thereof. The second detection unit is configured to detect light reflected by a sheet passing through the predetermined section. The occurrence of the gap is detected based on outputs from the first detection unit and the second detection unit.

摘要翻译： 送纸器拾取和传送纸张包括一个传送单元，一个一个地沿着纸张传送路径传送纸张;间隙发生检测单元，检测在纸张传送路径的预定部分内发生纸张之间的间隙;以及控制器 根据检测结果控制纸张的传送定时。 间隙发生检测单元包括第一检测单元和第二检测单元。 第一检测单元被配置为检测朝向预定部分发射的光，到达其预定部分的会聚表面，并且会聚在其接收元件上。 第二检测单元被配置为检测通过预定区段的片材反射的光。 基于来自第一检测单元和第二检测单元的输出检测间隙的发生。