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公开(公告)号：US20200096890A1
公开(公告)日：2020-03-26
申请号：US16262940
申请日：2019-01-31
申请人： FUJI XEROX CO., LTD.
摘要： An image forming apparatus includes an intermediate transfer unit that holds an image to be transferred onto a recording medium, a base image formation unit that forms a planar base image onto the intermediate transfer unit by using an opaque base image forming agent, the base image being brought into contact with and disposed onto an entire surface of the recording medium or a partial region of the surface of the recording medium, a transparent image formation unit that forms a transparent image onto the intermediate transfer unit by using a transparent image forming agent, a first control unit that performs control for transferring a monochromatic or polychromatic image including the base image formed on the intermediate transfer unit by the base image formation unit onto the recording medium, a second control unit that performs control for superposing a monochromatic or polychromatic image including the base image formed by the base image formation unit onto the transparent image formed on the intermediate transfer unit by the transparent image formation unit and for transferring a monochromatic or polychromatic image including the transparent image and the base image onto the recording medium, and a selection unit that selects the first control unit or the second control unit depending on a recording medium type.
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公开(公告)号：US20180364622A1
公开(公告)日：2018-12-20
申请号：US15981909
申请日：2018-05-17
申请人： FUJI XEROX CO.,LTD.
IPC分类号： G03G15/16
CPC分类号： G03G15/165 , G03G15/1615 , G03G15/169
摘要： A transfer device includes a holding body that holds a toner image and to which a first tension and a second tension, which is smaller than the first tension, are applied, a transfer body that transfers the toner image to a recording medium while transporting the recording medium between the transfer body and the holding body, and a setting portion that sets tension applied to the holding body to the second tension when a mass of a toner of an uppermost toner layer constituting the toner image and disposed on the holding body is equal to or exceeds a threshold.
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公开(公告)号：US20210080854A1
公开(公告)日：2021-03-18
申请号：US16868772
申请日：2020-05-07
申请人： FUJI XEROX CO., LTD.
IPC分类号： G03G15/06
摘要： An image forming apparatus includes an image carrier that carries an image, a developing unit that applies a developing voltage to develop an electrostatic latent image formed on the image carrier with a developer, a transfer unit that electrostatically transfers the image onto media of different types, and a development controller that controls a developing operation of the developing unit. The development controller has a first control mode for a first medium, and a second control mode for a second medium having a lower transferability than the first medium. In the first control mode, the developing unit applies the developing voltage according to a first developing condition. In the second control mode, the developing unit applies the developing voltage according to a second developing condition in which a developing property is reduced as compared with the first developing condition.
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公开(公告)号：US20180364629A1
公开(公告)日：2018-12-20
申请号：US15798407
申请日：2017-10-31
申请人： FUJI XEROX CO.,LTD.
IPC分类号： G03G15/16
CPC分类号： G03G15/5054 , G03G15/1615
摘要： A transfer device includes a holding body that holds a toner image; a transfer body that presses a recording medium against the holding body with a first pressing force or a second pressing force, which is smaller than the first pressing force, to transfer the toner image to the recording medium while transporting the recording medium between the transfer body and the holding body; and a setting portion that sets a pressing force exerted on the recording medium at the second pressing force when a mass of a toner of an uppermost toner layer constituting the toner image and disposed on the holding body is equal to or exceeds a threshold.
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公开(公告)号：US20140119759A1
公开(公告)日：2014-05-01
申请号：US13962100
申请日：2013-08-08
申请人： FUJI XEROX Co., Ltd.
CPC分类号： G03G15/168 , G03G2215/0129 , G03G2215/1661
摘要： An image forming apparatus includes an image bearing member that bears a toner image; a transfer member that faces the image bearing member, nips a recording medium together with the image bearing member, and allows the recording medium to pass therebetween; a transfer-bias applying unit that applies transfer bias voltage to generate an electric field between the transfer member and the image bearing member; a cleaning member that is disposed in contact with the transfer member and removes toner from the transfer member; a cleaning-bias applying unit that applies cleaning bias voltage between the cleaning member and the transfer member; a transfer-toner-amount estimating unit that estimates an amount of toner to be transferred from the image bearing member to the transfer member when the recording medium does not pass therebetween; and a cleaning-bias controller that controls the cleaning bias voltage in correspondence with the estimated amount of toner.
摘要翻译： 图像形成装置包括承载调色剂图像的图像承载部件; 面向图像承载部件的转印部件与图像承载部件一起夹持记录介质，并允许记录介质在其间通过; 转印偏压施加单元，其施加转印偏压以在转印部件和图像承载部件之间产生电场; 清洁构件，其设置成与所述转印构件接触并从所述转印构件去除调色剂; 清洁偏压施加单元，其在清洁构件和转印构件之间施加清洁偏压; 转印调色剂量估计单元，当记录介质不通过时，估计从图像承载部件传递到转印部件的调色剂的量; 以及清洁偏压控制器，其根据估计的调色剂量来控制清洁偏压。
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公开(公告)号：US20210072658A1
公开(公告)日：2021-03-11
申请号：US16859415
申请日：2020-04-27
申请人： FUJI XEROX CO., LTD.
IPC分类号： G03G15/02
摘要： An image forming apparatus includes an image holding unit that holds an image that is formed of a developer, the image being intended to be transferred onto a medium, and an image that is not intended to be transferred onto a medium, a transfer unit that transfers the image that is intended to be transferred onto a medium onto a medium, a removing unit that removes the image that is not intended to be transferred onto a medium from the image holding unit, and a forming unit that forms the image that is not intended to be transferred onto a medium onto the image holding unit by using a developer and that has a first forming mode for a first medium and a second forming mode for a second medium that has a transfer sensitivity lower than a transfer sensitivity of the first medium, the forming unit being configured to use a larger amount of the developer in formation of the image that is not intended to be transferred onto a medium in the first forming mode than in the second forming mode.
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公开(公告)号：US20200292957A1
公开(公告)日：2020-09-17
申请号：US16545047
申请日：2019-08-20
申请人： FUJI XEROX CO., LTD.
摘要： An image forming apparatus includes: an image holding section; a transfer section that includes a transfer member, applies a transfer electric-field to a transfer region between the image holding section and the transfer member, and electrostatically transfers an image held by the image holding section onto a recording medium; a contact section that acts as an electrode to ground while being in contact with the recording medium when the recording medium passes through the transfer region; a first resistance detection section; a second resistance detection section; a comparison section that compares a first system resistance detected by the first resistance detection section with a second system resistance detected by the second resistance detection section; and a switching section that switches between constant voltage control and constant current control for the transfer electric-field produced by the transfer section depending on a result of comparison by the comparison section.
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公开(公告)号：US20190187599A1
公开(公告)日：2019-06-20
申请号：US15979478
申请日：2018-05-15
申请人： FUJI XEROX CO.,LTD.
发明人： Masaaki YAMAURA , Satoshi SHIGEZAKI , Yoko MIYAMOTO , Yoshiyuki TOMINAGA , Noboru HIRAKAWA , Jun KUWABARA
IPC分类号： G03G15/16
CPC分类号： G03G15/5029 , G03G15/0131 , G03G15/1615 , G03G15/5004
摘要： An image forming apparatus includes a transfer unit that transfers a toner image to a transfer body; a guide unit disposed upstream of the transfer unit in a direction in which the transfer body is transported, the guide unit guiding the transfer body; a supply unit that supplies a transfer voltage to the transfer unit; and a setting unit that sets the transfer voltage supplied by the supply unit so that a transfer current supplied to the transfer unit is within a predetermined range at the time when the transfer body becomes separated from the guide unit.
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公开(公告)号：US20170277057A1
公开(公告)日：2017-09-28
申请号：US15225878
申请日：2016-08-02
申请人： FUJI XEROX CO., LTD.
IPC分类号： G03G15/01
CPC分类号： G03G15/0131 , G03G15/0189 , G03G15/1605
摘要： An image forming apparatus includes multiple first image forming units, a second image forming unit, and a controller. The first image forming units transfer toner images developed with colored toners to a transfer body, and form first images on the transfer body. The second image forming unit transfers a toner image developed with a spot color toner different from colors of the colored toners to the transfer body prior to the first image forming units, and forms a second image serving as an undercoat or an overcoat of the first images on the transfer body. The controller controls the first image forming units in order that amounts of the colored toners used for forming the first images by the first image forming units become less than amounts of the colored toners used when the first images are formed prior to the second image.
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公开(公告)号：US20200301359A1
公开(公告)日：2020-09-24
申请号：US16545369
申请日：2019-08-20
申请人： FUJI XEROX CO., LTD.
IPC分类号： G03G21/20
摘要： An image forming apparatus includes: an image holding section; a transfer section that has a transfer member, applies a transfer electric-field to a transfer region between the image holding section and the transfer member, and electrostatically transfers an image held by the image holding section onto a recording medium; contact sections that act as electrodes to ground while being in contact with the recording medium; a humidification section that is provided upstream of the transfer region and humidifies the recording medium; a first control section that performs control without humidification by the humidification section; a second control section that performs control to cause the humidification section to humidify the recording medium; and a selection section that selects the first control section or the second control section depending on a type of the recording medium.
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