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1. 发明授权

US5799225A Image forming apparatus having variable transfer and attraction voltage 失效
标题翻译：具有可变传输和吸引电压的图像形成装置
公开(公告)号：US5799225A
公开(公告)日：1998-08-25
申请号：US536100
申请日：1995-09-29
申请人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
发明人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
IPC分类号： G03G15/16
CPC分类号： G03G15/1695 , G03G15/167 , G03G15/1675 , G03G15/168 , G03G15/1685 , G03G2215/1619 , G03G2215/1657
摘要： An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A toner image formed on a photosensitive drum is transferred onto the transfer paper when the transfer paper is wound around the transfer drum and brought into contact with the photosensitive drum. A variable voltage is applied to a conductive layer provided on an inner side of the transfer drum so as to either transfer the image onto the transfer paper or attract the transfer paper to the transfer roller. The transfer voltage is lower than the attracting voltage. The voltage applied to the transfer drum for both transfer and attraction will be variable depending on a detected humidity or type of transfer paper. In addition, a manual adjusting device is capable of adjusting the transfer or attraction voltage. A grounded conductive electrode roller is pressed against a dielectric layer provided on an outer side of the transfer drum for providing potential difference between the conductive layer and the transfer paper.
摘要翻译：图像形成装置包括静电吸引和保持转印纸的转印鼓。当转印纸缠绕在转印鼓上并与感光鼓接触时，在感光鼓上形成的调色剂图像转印到转印纸上。将可变电压施加到设置在转印鼓的内侧上的导电层，以将图像转印到转印纸上或将转印纸吸引到转印辊上。转印电压低于吸引电压。施加到转印鼓上的转印和吸引的电压将根据检测到的湿度或转印纸的类型而变化。此外，手动调节装置能够调节传送或吸引电压。将接地的导电电极辊压在设置在转印鼓的外侧上的介电层上，以提供导电层和转印纸之间的电位差。

2. 发明授权

US06259869B1 Image forming apparatus 失效
标题翻译：图像形成装置
公开(公告)号：US06259869B1
公开(公告)日：2001-07-10
申请号：US09114928
申请日：1998-07-14
申请人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
发明人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
IPC分类号： G03G1502
CPC分类号： G03G15/1695 , G03G15/167 , G03G15/1675 , G03G15/168 , G03G15/1685 , G03G2215/1619 , G03G2215/1657
摘要： An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer provided on an outer side of the transfer drum through the transfer paper. A toner image formed on a photosensitive drum is transferred onto the transfer paper when the transfer paper is wound around the transfer drum and brought into contact with the photosensitive drum. The image forming apparatus further includes a member which charges the transfer paper in a polarity reversed to a polarity of the transfer drum, so that the transfer drum can attract the transfer sheet electrostatically in a satisfactory manner. The image forming apparatus further includes a charge control mechanism for controlling the amount of charges on the photosensitive drum. In addition the photosensitive drum has a voltage applying mechanism for applying a voltage to the internal surface of the drum.
摘要翻译：图像形成装置包括静电吸引和保持转印纸的转印鼓。向设置在转印鼓内侧的导电层施加电压，并且通过转印纸将接地的导电电极部件压在设置在转印鼓外侧的电介质层上。当转印纸缠绕在转印鼓上并与感光鼓接触时，在感光鼓上形成的调色剂图像转印到转印纸上。图像形成装置还包括将转印纸极性反转到转印鼓的极性的装置，使得转印鼓可以以令人满意的方式静电吸引转印纸。图像形成装置还包括用于控制感光鼓上的电荷量的充电控制机构。此外，感光鼓具有用于向鼓的内表面施加电压的电压施加机构。

3. 发明授权

US06169862A Image forming apparatus with nip time changing device 有权
标题翻译：具有夹持时间更换装置的图像形成装置
公开(公告)号：US06169862A
公开(公告)日：2001-01-02
申请号：US09447435
申请日：1999-11-23
申请人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
发明人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
IPC分类号： G03G1516
CPC分类号： G03G15/1695 , G03G15/167 , G03G15/1675 , G03G15/168 , G03G15/1685 , G03G2215/1619 , G03G2215/1657
摘要： An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer provided on an outer side of the transfer drum through the transfer paper. A toner image formed on a photosensitive drum is transferred onto the transfer paper when the transfer paper is wound around the transfer drum and brought into contact with the photosensitive drum. A nip time changing controller changes the amount of time that a transfer sheet is in the nip between the transfer drum and the grounded conductive electrode member.
摘要翻译：图像形成装置包括静电吸引和保持转印纸的转印鼓。向设置在转印鼓内侧的导电层施加电压，并且通过转印纸将接地的导电电极部件压在设置在转印鼓外侧的电介质层上。当转印纸缠绕在转印鼓上并与感光鼓接触时，在感光鼓上形成的调色剂图像转印到转印纸上。辊隙更换控制器改变转印片在转印鼓和接地的导电电极部件之间的辊隙中的时间量。

4. 发明授权

US6118954A Image forming apparatus having transfer roller with charge-removing and cleaning devices 失效
标题翻译：图像形成装置具有带有除电和清洁装置的转印辊
公开(公告)号：US6118954A
公开(公告)日：2000-09-12
申请号：US115260
申请日：1998-07-14
申请人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
发明人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
IPC分类号： G03G15/16
CPC分类号： G03G15/1695 , G03G15/167 , G03G15/1675 , G03G15/168 , G03G15/1685 , G03G2215/1619 , G03G2215/1657
摘要： An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer provided on an outer side of the transfer drum through the transfer paper. A toner image formed on a photosensitive drum is transferred onto the transfer paper when the transfer paper is wound around the transfer drum and brought into contact with the photosensitive drum. The image forming apparatus further includes a member which charges the transfer paper in a polarity reversed to a polarity of the transfer drum, so that the transfer drum can attract the transfer sheet electrostatically in a satisfactory manner. The image forming apparatus further includes a mechanism for removing the charges on the surface of the transfer drum via a bias switching device and a cleaning device for cleaning the surface of the transfer drum so as to eliminate defects in a transferred image, thereby upgrading the quality of a resulting image. The cleaning device may be a blade having a particular engagement crossover between the blade and transfer drum.
摘要翻译：图像形成装置包括静电吸引和保持转印纸的转印鼓。向设置在转印鼓内侧的导电层施加电压，并且通过转印纸将接地的导电电极部件压在设置在转印鼓外侧的电介质层上。当转印纸缠绕在转印鼓上并与感光鼓接触时，在感光鼓上形成的调色剂图像转印到转印纸上。图像形成装置还包括将转印纸极性反转到转印鼓的极性的装置，使得转印鼓可以以令人满意的方式静电吸引转印纸。图像形成装置还包括用于通过偏压切换装置和用于清洁转印鼓表面的清洁装置去除转印鼓表面上的电荷的机构，以消除转印图像中的缺陷，从而提高质量的结果图像。清洁装置可以是在叶片和转印鼓之间具有特定接合交叉的叶片。

5. 发明授权

US6081686A Image forming apparatus having transfer drum with specific construction 有权
标题翻译：具有特殊结构的转鼓的图像形成装置
公开(公告)号：US6081686A
公开(公告)日：2000-06-27
申请号：US349947
申请日：1999-07-08
申请人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
发明人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
IPC分类号： G03G15/16 , G03G15/01
CPC分类号： G03G15/1695 , G03G15/167 , G03G15/1675 , G03G15/168 , G03G15/1685 , G03G2215/1619 , G03G2215/1657
摘要： An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer provided on an outer side of the transfer drum through the transfer paper. A toner image formed on a photosensitive drum is transferred onto the transfer paper when the transfer paper is wound around the transfer drum and brought into contact with the photosensitive drum. The transfer drum includes the inner side conductive layer, a semi-conductive layer, and a dielectric layer provided on the surface of the drum. The dielectric layer can be made to adhere to the semi-conductive layer by thermally contracting this layer or the semi-conductive and dielectric layer can be made of a one-piece construction. In another embodiment, the dielectric's inner side can have projections and depressions in contact with the semi-conductive layer.
摘要翻译：图像形成装置包括静电吸引和保持转印纸的转印鼓。向设置在转印鼓内侧的导电层施加电压，并且通过转印纸将接地的导电电极部件压在设置在转印鼓外侧的电介质层上。当转印纸缠绕在转印鼓上并与感光鼓接触时，在感光鼓上形成的调色剂图像转印到转印纸上。转印鼓包括内侧导电层，半导电层和设置在鼓表面上的电介质层。可以通过热收缩该层来使电介质层粘附到半导电层上，或者半导体和介电层可以由一体式构造制成。在另一个实施例中，电介质的内侧可以具有与半导电层接触的突起和凹陷。

6. 发明授权

US06233422B1 Image forming apparatus having transfer drum with transfer paper charging member 失效
标题翻译：图像形成装置具有带转印纸充电部件的转印鼓
公开(公告)号：US06233422B1
公开(公告)日：2001-05-15
申请号：US09447434
申请日：1999-11-23
申请人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
发明人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
IPC分类号： G03G1501
CPC分类号： G03G15/1695 , G03G15/167 , G03G15/1675 , G03G15/168 , G03G15/1685 , G03G2215/1619 , G03G2215/1657
摘要： An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer provided on an outer side of the transfer drum through the transfer paper. A toner image formed on a photosensitive drum is transferred onto the transfer paper when the transfer paper is wound around the transfer drum and brought into contact with the photosensitive drum. The image forming apparatus further includes an upstream member or layer on the electrode member which charges the transfer paper in a polarity reversed to a polarity of the transfer drum, so that the transfer drum can attract the transfer sheet electrostatically in a satisfactory manner.
摘要翻译：图像形成装置包括静电吸引和保持转印纸的转印鼓。向设置在转印鼓内侧的导电层施加电压，并且通过转印纸将接地的导电电极部件压在设置在转印鼓外侧的电介质层上。当转印纸缠绕在转印鼓上并与感光鼓接触时，在感光鼓上形成的调色剂图像转印到转印纸上。图像形成装置还包括在电极构件上的上游构件，其以与转印鼓的极性相反的极性对转印纸进行充电，使得转印鼓可以以令人满意的方式静电吸引转印片。

7. 发明授权

US6026256A Image forming apparatus 失效
标题翻译：图像形成装置
公开(公告)号：US6026256A
公开(公告)日：2000-02-15
申请号：US115257
申请日：1998-07-14
申请人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
发明人： Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu , Hiromu Yoshimoto , Kouichi Yamauchi , Hiroshi Tachiki , Tomohiro Oikawa , Yoshie Iwakura , Atsuyuki Katoh
IPC分类号： G03G15/16
CPC分类号： G03G15/1695 , G03G15/167 , G03G15/1675 , G03G15/168 , G03G15/1685 , G03G2215/1619 , G03G2215/1657
摘要： An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer provided on an outer side of the transfer drum through the transfer paper. A toner image formed on a photosensitive drum is transferred onto the transfer paper when the transfer paper is wound around the transfer drum and brought into contact with the photosensitive drum. The image forming apparatus further includes a member which charges the transfer paper in a polarity reversed to a polarity of the transfer drum, so that the transfer drum can attract the transfer sheet electrostatically in a satisfactory manner. The image forming apparatus further includes a mechanism for removing the charges on the surface of the transfer drum and cleaning the surface of the transfer drum so as to eliminate defects in a transferred image, thereby upgrading the quality of a resulting image.
摘要翻译：图像形成装置包括静电吸引和保持转印纸的转印鼓。向设置在转印鼓内侧的导电层施加电压，并且通过转印纸将接地的导电电极部件压在设置在转印鼓外侧的电介质层上。当转印纸缠绕在转印鼓上并与感光鼓接触时，在感光鼓上形成的调色剂图像转印到转印纸上。图像形成装置还包括将转印纸极性反转到转印鼓的极性的装置，使得转印鼓可以以令人满意的方式静电吸引转印纸。图像形成装置还包括用于去除转印鼓表面上的电荷并清洁转印鼓的表面的机构，以消除转印图像中的缺陷，从而提高所得图像的质量。

8. 发明授权

US5623329A Transfer device for an image forming apparatus 失效
标题翻译：转印装置用于图像形成装置
公开(公告)号：US5623329A
公开(公告)日：1997-04-22
申请号：US383732
申请日：1995-02-03
申请人： Kouichi Yamauchi , Hiroshi Tachiki , Hiromu Yoshimoto , Atsuyuki Katoh , Yuhi Akagawa , Takayuki Ohno , Yoshinobu Tateishi , Keizo Fukunaga , Mitsuyoshi Terada , Fumio Shimazu , Takuya Abe , Kiyoshi Toizumi
发明人： Kouichi Yamauchi , Hiroshi Tachiki , Hiromu Yoshimoto , Atsuyuki Katoh , Yuhi Akagawa , Takayuki Ohno , Yoshinobu Tateishi , Keizo Fukunaga , Mitsuyoshi Terada , Fumio Shimazu , Takuya Abe , Kiyoshi Toizumi
IPC分类号： G03G15/00 , G03G15/16 , G03G15/20
CPC分类号： G03G15/6564 , G03G15/167 , G03G15/1695 , G03G15/2028 , G03G2215/00679 , G03G2215/00734 , G03G2215/00738 , G03G2215/00742
摘要： An image forming apparatus of the present invention includes a photoreceptor drum on which a toner image is formed, a transfer drum for transferring the toner image to paper by bringing the paper into contact with the photoreceptor drum, the transfer drum having a dielectric layer, a semi-conductive layer and a conductive layer laminated in this order from the paper side, a power source which is connected to the conductive layer so as to apply a predetermined voltage to the conductive layer, and a conductive roller for pressing the paper against a surface of the dielectric layer so as to produce a potential difference between the conductive layer and the paper. The potential difference induces charges of the same polarity as the voltage applied to the conductive layer on the surface of the dielectric layer, and charges of the opposite polarity on a back surface of the paper pressed against the surface of the dielectric layer. Thus, the paper electrostatically adheres to the transfer drum in a satisfactory manner. Moreover, unlike charging by atmospheric discharge, since the surface potential of the transfer drum is stable, it is possible to prevent unsatisfactory transfers and improve the image quality.
摘要翻译：本发明的图像形成装置包括其上形成有调色剂图像的感光鼓，用于通过使纸与感光鼓接触而将调色剂图像转印到纸张上的转印鼓，转印鼓具有介电层，半导电层和导电层，从纸侧依次层叠，连接到导电层以向导电层施加预定电压的电源，以及用于将纸压在表面上的导电辊以产生导电层和纸之间的电位差。电位差引起与施加到电介质层表面上的导电层的电压相同极性的电荷，并且在压在电介质层表面上的纸的背面上的相反极性的电荷。因此，纸以令人满意的方式静电粘附到转印鼓上。此外，与通过大气排放的充电不同，由于转印鼓的表面电位稳定，可以防止不令人满意的转印并提高图像质量。

9. 发明授权

US5812923A Image forming apparatus equipped with register rollers for curling transfer paper 失效
标题翻译：图像形成装置配备有用于卷曲转印纸的定位辊
公开(公告)号：US5812923A
公开(公告)日：1998-09-22
申请号：US764618
申请日：1996-12-11
申请人： Kouichi Yamauchi , Hiroshi Tachiki , Hiromu Yoshimoto , Atsuyuki Katoh , Yuhi Akagawa , Takayuki Ohno , Yoshinobu Tateishi , Keizo Fukunaga , Mitsuyoshi Terada , Fumio Shimazu , Takuya Abe , Kiyoshi Toizumi
发明人： Kouichi Yamauchi , Hiroshi Tachiki , Hiromu Yoshimoto , Atsuyuki Katoh , Yuhi Akagawa , Takayuki Ohno , Yoshinobu Tateishi , Keizo Fukunaga , Mitsuyoshi Terada , Fumio Shimazu , Takuya Abe , Kiyoshi Toizumi
IPC分类号： G03G15/00 , G03G15/16 , G03G15/20
CPC分类号： G03G15/6564 , G03G15/167 , G03G15/1695 , G03G15/2028 , G03G2215/00679 , G03G2215/00734 , G03G2215/00738 , G03G2215/00742
摘要： An image forming apparatus of the present invention includes a photoreceptor drum on which a toner image is formed, a transfer drum for transferring the toner image formed to transfer paper by bringing the transfer paper into contact with the photoreceptor drum, and a pair of register rollers for supplying the transfer paper to the transfer drum at a predetermined time and for curling the transfer paper in an arc. The register rollers include first and second rollers pressed against each other, the first roller being a predetermined hardness and the second roller being a hardness larger than the first roller. The transfer drum is disposed on the same side as the second roller with respect to an imaginary tangent line touching the surface of the second roller at one end of a contact section between the first and second rollers. The image forming apparatus also includes transporting means for supplying the transfer paper to the register rollers so that a front edge of the transfer paper comes into contact with the second roller, temporarily stops, and then continues to the transfer drum. The image forming apparatus also includes a means for changing the pressure that the register rollers are pressed together. Paper type, quality, thickness, and size are detected and the pressure is adjusted accordingly. The means for changing pressure includes a resilient member for the pressing the second roller against the first, and a changing member for changing the amount of deformation of the resilient member.
摘要翻译：本发明的图像形成装置包括其上形成有调色剂图像的感光鼓，用于通过使转印纸与感光鼓接触而转印形成转印纸的调色剂图像的转印鼓和一对记录辊用于在预定时间将转印纸提供给转印鼓，并将转印纸卷曲成弧形。定位辊包括彼此压靠的第一和第二辊，第一辊是预定的硬度，第二辊的硬度大于第一辊。转印鼓相对于在第一和第二辊之间的接触部分的一端处接触第二辊的表面的假想切线设置在与第二辊相同的一侧上。图像形成装置还包括用于将转印纸供给到对准辊的传送装置，使得转印纸的前边缘与第二辊接触，暂时停止，然后继续到转印鼓。图像形成装置还包括用于改变对准辊压在一起的压力的装置。检测纸张类型，质量，厚度和尺寸，并相应调整压力。用于改变压力的装置包括用于将第二辊压靠第一辊的弹性构件和用于改变弹性构件的变形量的改变构件。

10. 发明授权

US5697034A Image forming apparatus which stably holds a uniform surface potential of a transfer device 失效
标题翻译：稳定地保持转印装置的均匀表面电位的图像形成装置
公开(公告)号：US5697034A
公开(公告)日：1997-12-09
申请号：US630982
申请日：1996-04-12
申请人： Yoshie Iwakura , Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu
发明人： Yoshie Iwakura , Takuya Abe , Kiyoshi Toizumi , Fumio Shimazu
IPC分类号： G03G15/16
CPC分类号： G03G15/1685
摘要： An image forming apparatus has a photoreceptor drum whereon a toner image is to be formed, a transfer drum for transferring the toner image to a transfer material by making the transfer material contact with the photoreceptor drum, the transfer drum having a dielectric layer, semiconducting layer and conducting layer laminated in this order from a surface which comes into contact with the transfer material, a power source section for applying any voltage to the conducting layer, and a grounded conducting roller which is located in an upstream section in a transfer material transporting direction with respect to a transfer position on a surface of the dielectric layer and comes into contact with the dielectric layer surface through the transfer material. The volume resistivity of the dielectric layer is not lower than 40 percent of the volume resistivity of the semiconducting layer. In this structure, a current component flowing in the circuit is greater than a current component causing the dielectric layer to function as a power source, thereby accumulating charges on the dielectric layer. As a result, stable adhesion of the transfer material to the transfer drum, and improved image quality are achieved.
摘要翻译：图像形成装置具有要形成调色剂图像的感光鼓，用于通过使转印材料与感光鼓接触来将调色剂图像转印到转印材料的转印鼓，转印鼓具有介电层，半导体层和从与转印材料接触的表面依次层压的导电层，用于向导电层施加任何电压的电源部分和位于转印材料输送方向上游部分的接地导电辊相对于电介质层的表面上的转印位置，通过转印材料与电介质层表面接触。电介质层的体积电阻率不低于半导体层体积电阻率的40％。在这种结构中，在电路中流动的电流分量大于导致电介质层用作电源的电流分量，从而在电介质层上积累电荷。结果，可以实现转印材料对转印鼓的稳定的粘附，并提高图像质量。

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