公开(公告)号：US5727784A

公开(公告)日：1998-03-17

申请号：US773999

申请日：1996-12-26

申请人： Takizo Sagawa

发明人： Takizo Sagawa

IPC分类号： G03G15/00 ,  B65H5/06 ,  B65H5/36 ,  B65H7/06 ,  B65H7/02

CPC分类号： B65H5/36 ,  B65H2601/11

摘要： A paper feeder capable of preventing a sheet of paper from breaking when a paper jam is developed within an image forming apparatus over the boundary between a paper conveying unit and the image forming apparatus and simply removing the jammed paper outside from the paper feeder. An entrance roller pair for feeding the paper is provided in the neighborhood of an entrance of a paper conveying path. A lower fixed guide member and a rotatable guide member opposed to each other so as to interpose the paper conveying path therebetween, are provided on the downstream side as seen in a paper feeding direction. Further, a jump portion which projects in convex form at a position opposed to the rotatable guide member and a paper sensor for detecting a rear end of the paper in the neighborhood of the entrance roller pair are provided. The rotatable guide member is rotatably supported by a support shaft provided on the downstream side as seen in the paper feeding direction and is urged toward the fixed guide member by the mass of a weight or the like. When the paper jam is developed, a paper feeding operation is continued until the rear end of the paper enters into the paper conveying unit and the paper is folded between the rotatable guide member and the fixed guide member.

摘要翻译： 当在纸张输送单元和图像形成装置之间的边界上的图像形成装置内形成卡纸时，能够防止一张纸断裂的纸供给器，并且仅将纸张从纸张供给器外面移除。 在纸张传送路径的入口附近设置有用于馈送纸张的入口辊对。 在纸张进给方向上看到的下游侧设置有下固定导向构件和彼此相对的以可移动方式插入纸张传送路径的可旋转引导构件。 此外，提供了在与可旋转引导构件相对的位置处以凸起形式突出的跳跃部分和用于检测在入口辊对附近的纸张后端的纸张传感器。 可旋转的引导构件由设置在下游侧的支撑轴可旋转地支撑，如在进纸方向上看到的，并且通过重量等被推向固定的引导构件。 当卡纸显影时，继续进纸操作直到纸的后端进入纸张传送单元，并且纸张在可旋转的引导构件和固定的引导构件之间折叠。

公开(公告)号：US5678138A

公开(公告)日：1997-10-14

申请号：US620084

申请日：1996-03-21

申请人： Mikio Kobayashi ,  Shuji Iseki ,  Junichirou Sameshima ,  Satoshi Fukada ,  Takizo Sagawa ,  Ryoichi Tsuruoka ,  Yukio Hayashi ,  Norio Hokari

发明人： Mikio Kobayashi ,  Shuji Iseki ,  Junichirou Sameshima ,  Satoshi Fukada ,  Takizo Sagawa ,  Ryoichi Tsuruoka ,  Yukio Hayashi ,  Norio Hokari

IPC分类号： G03G15/00 ,  G03G15/01

CPC分类号： G03G15/70 ,  G03G15/0131 ,  G03G2215/00544 ,  G03G2215/00548 ,  G03G2215/00552

摘要： An image forming apparatus including a plural number of paper transporting units including at least first and second paper transporting units, in-unit paper sensing mechanism located in the first paper transporting unit, unit-to-unit paper sensing mechanism located between the first and second paper transporting units, and drive control mechanism for controlling the operations of the plural number of the paper transporting units, wherein the drive control mechanism includes first mechanism operating such that when any of the in-unit paper sensing mechanism located in the first paper transporting unit detects a paper transport trouble, the first mechanism stops the paper transporting operation of the second paper transporting unit in response to a sensing signal indicative of the presence of a paper from the unit-to-unit paper sensing mechanism, and second mechanism stops the paper transporting operation of the first paper transporting unit upon the stop of the paper transporting operation of the second paper transporting unit, and drives the first paper transporting unit to move the paper a predetermined distance in the direction that is reverse to the normal direction.

摘要翻译： 一种图像形成装置，包括多个纸张传送单元，所述多个纸张传送单元至少包括第一和第二纸张传送单元，位于第一纸张传送单元中的单元纸张传感机构，位于第一和第二纸张传送单元之间的单元到纸张传感机构 纸张传送单元和用于控制多个纸张传送单元的操作的驱动控制机构，其中驱动控制机构包括第一机构，其操作使得当位于第一纸张传送单元中的任何单位纸张传感机构 检测纸张传送故障，第一机构响应于表示来自单元到纸张感测机构的纸张的感测信号而停止第二纸张传送单元的纸张传送操作，并且第二机构停止纸张 在纸张传送操作的停止时第一纸张传送单元的传送操作 并且驱动第一纸张传送单元沿与正常方向相反的方向移动纸张预定距离。

公开(公告)号：US3932755A

公开(公告)日：1976-01-13

申请号：US495969

申请日：1974-08-09

申请人： Takizo Sagawa

发明人： Takizo Sagawa

IPC分类号： B65H7/12 ,  G03G15/00 ,  G01J1/00

CPC分类号： G03G15/703 ,  B65H7/125 ,  B65H2553/41

摘要： An apparatus for detecting the feeding of piled sheets along a sheet feeding path. The apparatus includes a first reflection plate of high reflectivity and a second reflection plate of low reflectivity. Means are provided for irradiating each of the plates with radiant rays. Means are provided for detecting the quantity of radiant rays reflected from each of the plates. Means are coupled to the detecting means for generating a signal indicating piled sheets being fed when the difference between the quantity of reflective rays from the first plate and the quantity of reflective rays from the second plate are below a predetermined level.

摘要翻译： 一种用于检测沿片材供给路径对堆叠片材的供给的装置。 该装置包括高反射率的第一反射板和低反射率的第二反射板。 提供了用辐射线照射每个板的装置。 提供了用于检测从每个板反射的辐射线的量的装置。 装置耦合到检测装置，用于当来自第一板的反射射线的数量与来自第二板的反射射线的数量之间的差低于预定水平时，产生指示被送入的堆叠纸张的信号。