公开(公告)号：US5552873A

公开(公告)日：1996-09-03

申请号：US196530

申请日：1994-02-15

申请人： Naoto Hirao ,  Shinji Ohshima

发明人： Naoto Hirao ,  Shinji Ohshima

IPC分类号： G03G15/16 ,  G03G15/14

CPC分类号： G03G15/165 ,  G03G2215/00409 ,  G03G2215/00586

摘要： An electrophotographic image forming apparatus suitable especially for double-side printing or double-side copying. A pressure roller for pressing a sheet of paper against an electrostatic latent image retaining body is rotatably provided on the upstream side of a transfer unit. The pressure roller is elastically mounted through a cushion member, thereby preventing transmission of vibration of the pressure roller itself to the paper. As the paper is positively pressed against the retaining body by the pressure roller, the paper can be brought into close contact with the retaining body even when the paper is wrinkled, thus obtaining a good transfer characteristic.

摘要翻译： 一种适用于双面打印或双面复印的电子照相成像装置。 用于将纸张压靠静电潜像保持体的压力辊可旋转地设置在转印单元的上游侧。 压力辊通过缓冲构件弹性地安装，从而防止压力辊本身向纸张的振动传递。 当通过加压辊将纸张压靠在保持体上时，即使纸张起皱，纸也能够与保持体紧密接触，从而获得良好的转印特性。

公开(公告)号：US06259868B1

公开(公告)日：2001-07-10

申请号：US09481695

申请日：2000-01-12

申请人： Daisuke Fujii ,  Kiyoshi Chinzei ,  Naoto Hirao ,  Amiko Chihara ,  Hiroaki Yoshida

发明人： Daisuke Fujii ,  Kiyoshi Chinzei ,  Naoto Hirao ,  Amiko Chihara ,  Hiroaki Yoshida

IPC分类号： G03G1500

CPC分类号： B41J3/60 ,  B41J11/003 ,  B41J11/008 ,  G03G15/238 ,  G03G2215/00455

摘要： An image forming apparatus includes a reverse side print mechanism for printing on the reverse side of continuous paper, a surface print mechanism for printing on the surface of the continuous paper, and a width detecting mechanism for detecting a width of the continuous paper. The apparatus further includes a controller which, based on the detected paper width, determines a print start position on the reverse side of the continuous paper and controls the reverse side print mechanism to start printing from the determined print start position. Thus, even if the paper width is changed, the reverse side print start position can be set to a predetermined position.

摘要翻译： 图像形成装置包括用于在连续纸的背面打印的反面打印机构，用于在连续纸的表面上打印的表面打印机构以及用于检测连续纸的宽度的宽度检测机构。 该装置还包括控制器，该控制器基于检测到的纸张宽度，确定连续纸背面的打印开始位置，并控制反面打印机构从确定的打印开始位置开始打印。 因此，即使纸张宽度改变，也可以将反面打印开始位置设定为预定位置。

公开(公告)号：US06175716B1

公开(公告)日：2001-01-16

申请号：US09494143

申请日：2000-01-28

申请人： Toshimasa Toyama ,  Kiyoshi Chinzei ,  Yasuharu Takeuchi ,  Katsuya Shimatsu ,  Makoto Maki ,  Naoto Hirao

发明人： Toshimasa Toyama ,  Kiyoshi Chinzei ,  Yasuharu Takeuchi ,  Katsuya Shimatsu ,  Makoto Maki ,  Naoto Hirao

IPC分类号： G03G1500

CPC分类号： G03G15/6517 ,  B65H20/00 ,  B65H2301/443 ,  G03G2215/00459

摘要： The invention provides a continuous medium printing apparatus which can exert a transporting force to act upon a continuous medium without additional provision of a new tractor mechanism or some other transport mechanism. In the continuous medium printing apparatus, upon automatic loading of a continuous medium, a control section controls a charging operation of a charging section so that a leading end portion of the continuous medium may be electrostatically attracted to an image forming drum. The image forming drum to which the continuous medium is attracted is rotated in a printing transporting direction to exert a transporting force to act upon the continuous medium to transport the continuous medium in the printing transporting direction. The present invention is applicable to an apparatus which prints on a continuous medium such as continuous recording paper (continuous paper), for example, by electrophotography.

摘要翻译： 本发明提供一种能够施加输送力作用于连续介质而不附加设置新的拖拉机构或其它运输机构的连续介质打印设备。 在连续介质打印设备中，在自动加载连续介质时，控制部分控制充电部分的充电操作，使得连续介质的前端部分可以被静电吸引到图像形成滚筒。 连续介质被吸引的图像形成鼓在打印输送方向上旋转，以施加输送力作用在连续介质上，以在打印输送方向上输送连续介质。 本发明可应用于例如通过电子照相法在诸如连续记录纸（连续纸）的连续介质上打印的设备。

公开(公告)号：US6118956A

公开(公告)日：2000-09-12

申请号：US337271

申请日：1999-06-22

申请人： Naoto Hirao

发明人： Naoto Hirao

IPC分类号： B41J15/00 ,  B41J3/60 ,  G03G15/00 ,  G03G15/23 ,  G03G21/00

CPC分类号： G03G15/231 ,  G03G15/2032 ,  G03G2215/00459 ,  G03G2215/2083

摘要： The present invention is a duplex printing apparatus, which is equipped with a first image forming process unit, a second image forming process unit, a fixing section, a conveyance system, and said fixing section, and a control section. In making a switch-over between printing modes (one-sided copying, both-sided copying), the control section fixes by the fixing section the unfixed toner image on the medium formed in the printing mode preceding before the switch-over and then conveys the medium by the conveyance system to a printing start position in the printing mode following after the switch-over. With this, in making a switch-over between printing modes, even when the medium is fed back, there is no possibility that the unfixed toner image formed on the medium will be disturbed. Therefore, printing quality can be maintained and printing can be performed on the medium without waste.

摘要翻译： 本发明是一种双面打印装置，其具有第一图像形成处理单元，第二图像形成处理单元，固定部，输送系统和所述固定部，以及控制部。 在打印模式（单面复印，双面复印）之间进行切换时，控制部分通过固定部分将未定影的墨粉图像固定在切换前的打印模式中形成的介质上，然后传送 所述介质通过所述输送系统移动到所述切换之后的所述打印模式中的打印开始位置。 由此，在打印模式之间进行切换时，即使当介质被反馈时，形成在介质上的未定影的调色剂图像也不会受到干扰。 因此，可以保持打印质量并且可以在介质上进行打印而不浪费。

公开(公告)号：US5428434A

公开(公告)日：1995-06-27

申请号：US258436

申请日：1994-06-10

申请人： Naoto Hirao

发明人： Naoto Hirao

IPC分类号： B41J2/385 ,  G03G15/00 ,  G03G15/20 ,  G03G15/23 ,  G03G21/00

CPC分类号： G03G15/201 ,  G03G15/235 ,  G03G2215/2083

摘要： A toner image fixing device is disposed above a passageway along which a sheet of paper carrying toner images recorded thereon is moved, and has a lamp for emitting heat-radiation toward the sheet of paper to thermally fuse and fix the toner images thereon. Emission of the heat-radiation from the lamp is controlled such that the energy of the heat-radiation, to which a high-density toner image zone of the sheet of paper is subjected, is smaller than that of the heat-radiation to which a low-density toner image zone of the sheet of paper is subjected, to thereby prevent undulation of the sheet of paper. Where two-sided recording is applied to the sheet of paper, the prevention of undulation of the sheet of paper is especially significant because then the two-sided recording can be properly carried out.

摘要翻译： 调色剂图像定影装置设置在其上记录有调色剂图像的一张纸移动的通道上方，并且具有用于朝向该纸张发射热辐射的灯以热熔融并固定其上的调色剂图像。 控制来自灯的热辐射的发射被控制为使得纸张的高密度调色剂图像区域经受的热辐射的能量小于其中的热辐射的能量 使纸张的低密度调色剂图像区域受到影响，从而防止纸张起伏。 当对纸张进行双面记录时，由于可以适当地执行双面记录，所以防止纸张起伏特别重要。

公开(公告)号：US08000646B2

公开(公告)日：2011-08-16

申请号：US12047360

申请日：2008-03-13

申请人： Naoto Hirao

发明人： Naoto Hirao

IPC分类号： G03G15/00

CPC分类号： G03G15/6526 ,  G03G2215/00459 ,  G03G2215/00734

摘要： An image forming apparatus includes: an image transfer unit that transfers an image to continuous paper provided with a plurality of sprocket holes along a paper length direction on both sides in a paper width direction; an image fixing unit that fixes the image transported to the continuous paper by the image transfer unit; a transport unit that includes a plurality of protruding parts inserted into the sprocket holes on both sides in the paper width direction, that is placed downstream in a paper transport direction from the image fixing unit for moving the protruding parts in the paper transport direction, and that transports the continuous paper; a change unit that changes the spacing between the protruding parts in the paper width direction; and a control unit that controls drive of the change unit.

摘要翻译： 图像形成装置包括：图像转印单元，其在沿纸张宽度方向的两侧沿着纸张长度方向将图像转印到设置有多个链轮孔的连续纸张上; 图像定影单元，其通过图像传送单元固定传送到连续纸的图像; 传送单元，其包括插入到沿纸张宽度方向的两侧的链轮孔中的多个突出部分，该多个突出部分沿着纸张传送方向从图像定影单元放置在纸张传送方向上移动突出部分的下游;以及 运送连续纸; 改变单元，其改变所述突出部分之间在所述纸宽度方向上的间隔; 以及控制单元，其控制所述改变单元的驱动。

公开(公告)号：US06292649B1

公开(公告)日：2001-09-18

申请号：US09659594

申请日：2000-09-11

申请人： Toshimasa Toyama ,  Kiyoshi Chinzei ,  Yasuharu Takeuchi ,  Katsuya Shimatsu ,  Makoto Maki ,  Naoto Hirao

发明人： Toshimasa Toyama ,  Kiyoshi Chinzei ,  Yasuharu Takeuchi ,  Katsuya Shimatsu ,  Makoto Maki ,  Naoto Hirao

IPC分类号： G15

CPC分类号： G03G15/6517 ,  B65H20/00 ,  B65H2301/443 ,  G03G2215/00459

摘要： The invention provides a continuous medium printing apparatus which can exert a transporting force to act upon a continuous medium without additional provision of a new tractor mechanism or some other transport mechanism. In the continuous medium printing apparatus, upon automatic loading of a continuous medium, a control section controls a charging operation of a charging section so that a leading end portion of the continuous medium may be electrostatically attracted to an image forming drum. The image forming drum to which the continuous medium is attracted is rotated in a printing transporting direction to exert a transporting force to act upon the continuous medium to transport the continuous medium in the printing transporting direction. The present invention is applicable to an apparatus which prints on a continuous medium such as continuous recording paper (continuous paper), for example, by electrophotography.

公开(公告)号：US06175715B1

公开(公告)日：2001-01-16

申请号：US09340597

申请日：1999-06-28

申请人： Naoto Hirao ,  Kenji Fuke ,  Masaaki Ohyama ,  Katsuya Shimatsu

发明人： Naoto Hirao ,  Kenji Fuke ,  Masaaki Ohyama ,  Katsuya Shimatsu

IPC分类号： G03G1500

CPC分类号： G03G15/231 ,  G03G2215/00459 ,  G03G2215/2083

摘要： The invention provides a double-sided printing apparatus which includes a first image forming process unit, a second image forming process unit, a first fixing station, a second fixing station and a transport system all disposed in a first housing. The transport system includes a transport direction changing element which contacts with one of surfaces of a medium to change the transporting direction of the medium so that the medium is sent out to the second fixing station. While the medium is transported in a substantially vertical direction in the single double-sided printing apparatus, the height of the transport path of the medium is suppressed so as not to become very high, thereby miniaturizing the apparatus. Further, intense light leaking from the fixing stations is intercepted so that deterioration of photosensitive drums of the image forming process units is prevented and a drop of the surface potentials of the photosensitive drums is prevented to extend the life of each photosensitive drum and prevent deterioration of the printing quality.

摘要翻译： 本发明提供了一种双面打印设备，其包括全部设置在第一壳体中的第一成像处理单元，第二图像形成处理单元，第一定影站，第二定影站和输送系统。 传送系统包括传送方向改变元件，其与介质的一个表面接触以改变介质的传送方向，使得介质被送出到第二定影位置。 当在单面双面打印装置中介质沿大致垂直方向传送时，介质的输送路径的高度被抑制为不变得非常高，从而使装置小型化。 此外，从定影站泄漏的强光被遮断，从而防止图像形成处理单元的感光鼓的劣化，并且防止感光鼓的表面电位的下降延长每个感光鼓的使用寿命并防止 打印质量。

公开(公告)号：US5887236A

公开(公告)日：1999-03-23

申请号：US932822

申请日：1997-09-18

申请人： Naoto Hirao ,  Yoshihiro Tonomoto ,  Toshimasa Toyama ,  Masaaki Ohyama ,  Mituaki Ono ,  Kiyoshi Chinzei ,  Katsumi Adachi

发明人： Naoto Hirao ,  Yoshihiro Tonomoto ,  Toshimasa Toyama ,  Masaaki Ohyama ,  Mituaki Ono ,  Kiyoshi Chinzei ,  Katsumi Adachi

IPC分类号： G03G15/20

CPC分类号： G03G15/2032 ,  G03G15/2064 ,  G03G2215/00455 ,  G03G2215/2083

摘要： An image forming apparatus includes a fixing unit including at least a pair of rollers which thermally fix a toner image formed on a surface of a recording medium by pressing against the recording medium, and a separating and contacting mechanism supporting the pair of rollers so that the rollers can separate from and make contact with the recording medium, where the separating and contacting mechanism controls the rollers when contacting the rollers to the recording medium, by contacting each of the rollers approximately perpendicularly to the surface of the recording medium and so that the recording medium thereafter makes contact with a surface of each of the rollers for a wrap-around angle greater than 0.degree..

摘要翻译： 图像形成装置包括固定单元，该固定单元包括至少一对辊，其通过按压记录介质来热固定形成在记录介质的表面上的调色剂图像;以及分离和接触机构，其支撑所述一对辊，使得 辊可以与记录介质分离并与记录介质接触，其中分离和接触机构通过将辊子接触辊子与记录介质接触来控制辊子，通过使每个辊子大致垂直于记录介质的表面接触，并且使得记录 介质随后与每个辊的表面接触大于0°的卷绕角。

公开(公告)号：US5905930A

公开(公告)日：1999-05-18

申请号：US938934

申请日：1997-10-02

申请人： Toshimasa Toyama ,  Toshio Hino ,  Yoshihiro Tonomoto ,  Masaaki Ohyama ,  Naoto Hirao ,  Yoshinori Wada ,  Mituaki Ono ,  Kiyoshi Chinzei ,  Katsumi Adachi

发明人： Toshimasa Toyama ,  Toshio Hino ,  Yoshihiro Tonomoto ,  Masaaki Ohyama ,  Naoto Hirao ,  Yoshinori Wada ,  Mituaki Ono ,  Kiyoshi Chinzei ,  Katsumi Adachi

IPC分类号： G03G21/00 ,  G03G15/00 ,  G03G15/01 ,  G03G15/08 ,  G03G15/16 ,  G03G21/14

CPC分类号： G03G15/6526 ,  G03G15/00 ,  G03G15/164 ,  G03G15/167 ,  G03G2215/00021 ,  G03G2215/00223 ,  G03G2215/00586 ,  G03G2215/0119

摘要： An image forming apparatus includes a plurality of process units contacting a continuous recording medium and transferring images on the recording medium, a separating and contacting mechanism for controlling at least one of the recording medium and each of the process units to a separated state where the recording medium and the process unit are separated from each other and a contacting state where the recording medium and the process unit contact each other, and a controller for controlling the separating and contacting mechanism at a position where the process unit confronts a non-printing region on the recording medium so as to put the recording medium and the process unit to the contacting state.

摘要翻译： 图像形成装置包括与连续记录介质接触并在记录介质上传送图像的多个处理单元，用于将记录介质和每个处理单元中的至少一个控制到分离状态的分离和接触机构， 介质和处理单元彼此分离，并且记录介质和处理单元彼此接触的接触状态，以及用于在处理单元面对非打印区域的位置处控制分离和接触机构的控制器， 记录介质，以使记录介质和处理单元处于接触状态。