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公开(公告)号：US20240361714A1
公开(公告)日：2024-10-31
申请号：US18640337
申请日：2024-04-19
发明人： Akihiro KONDO , Ryohei TOKUNAGA , Yuta KITABAYASHI , Rina KIKUGAWA , Hiroki KAWASAKI , Shunsaku FUJII , Yuto MASAOKA
CPC分类号： G03G15/205 , G03G15/2064 , G03G15/5004 , G03G2215/00772
摘要： An image forming apparatus according to an aspect of the present disclosure includes a fixing device and a controller. The fixing device includes a fixing member, a pressure member, a heating member, and a temperature sensor. The controller cuts off power supply to the heating member when the temperature detected by the temperature sensor has risen to a cutoff temperature higher than the target temperature and thereafter resumes power supply to the heating member when the detected temperature has fallen below the cutoff temperature, and performs the PID control while limiting a maximum power supplied to the heating member to an upper limit power, which is a power supplied to the heating member at the time when the detected temperature has risen to the cutoff temperature, during a period from when power supply is resumed until a predetermined specific period of time elapses.
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公开(公告)号：US20240272071A1
公开(公告)日：2024-08-15
申请号：US18430060
申请日：2024-02-01
申请人： Konica Minolta, Inc.
CPC分类号： G01N21/4738 , G03G15/16 , G03G15/5029 , G01N2021/8917 , G03G2215/00751 , G03G2215/00772 , G03G2215/00776
摘要： A media detection apparatus for detecting moisture information corresponding to a moisture amount or a moisture percentage of a sheet, the media detection apparatus comprising:
a light emitter that emits light;
a light receiver that receives the light reflected off the sheet or transmitted through the sheet; and
a first hardware processor that determines the moisture information on the basis of temperature information corresponding to a temperature of the media detection apparatus and an output of the light receiver.-
3.发明授权公开(公告)号：US11747755B2
公开(公告)日：2023-09-05
申请号：US17720445
申请日：2022-04-14
发明人： Yasuhiro Maruyama
CPC分类号： G03G15/2017 , G03G15/2042 , G03G15/2046 , G03G15/6588 , G03G21/206 , G03G15/2039 , G03G2215/00734 , G03G2215/00772 , G03G2221/1645
摘要： An image forming apparatus includes a controller configured to identify a selected sheet size setting as defined by a dimension in the width direction and a dimension in the conveyance direction, set a cooling threshold at a first threshold if the selected sheet size setting is a first size having a dimension in the width direction larger than a predetermined dimension, and a dimension in the conveyance direction larger than the dimension in the width direction, and set the cooling threshold at a second threshold lower than the first threshold if the selected sheet size setting is a second size having a dimension in the width direction that is the same as the dimension in the width direction of the first size, and a dimension in the conveyance direction smaller than the dimension in the width direction.
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公开(公告)号：US09971291B2
公开(公告)日：2018-05-15
申请号：US15211029
申请日：2016-07-15
申请人： Xerox Corporation
发明人： Lakshmi Sujatha Yaramsetti , Veena Kumari Saluja , Colin William Robert Hewitt , Philip James Hambridge , Julius Cardozo , Timothy David Jonathan Spink
CPC分类号： G03G21/203 , G03G15/5029 , G03G15/6561 , G03G15/6564 , G03G2215/00772 , G03G2215/00776
摘要： A media path moves media sheets from a media supply, a print engine receives the media sheets from the media path, and a sensor detects a characteristic related to the media sheets. A drive nip continuously moves the media sheets, and a stall nip receives the media sheets from the drive nip. The stall nip is positioned less than the length of one of the media sheets from the drive nip. The stall nip alternately stops or moves the media sheets while the drive nip continuously moves the media sheets, as controlled by a controller, to cause the media sheets to buckle between the drive nip and the stall nip. The controller controls when to stop or move the media sheets to constantly vary the size of the buckle, and thereby make the buckle relatively larger for a first characteristic and make the buckle relatively smaller for a different characteristic.
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公开(公告)号：US20180129163A1
公开(公告)日：2018-05-10
申请号：US15792488
申请日：2017-10-24
申请人： Konica Minolta, Inc.
发明人： Yotaro Sato , Nobuhiko Okano
IPC分类号： G03G15/16
CPC分类号： G03G21/206 , G03G15/1605 , G03G15/168 , G03G21/203 , G03G2215/00772 , G03G2215/00776 , G03G2215/1619
摘要： An image forming apparatus includes: an image supporter that supports an image to be transferred to paper; a transfer belt that is opposed to the image supporter and forms a nip; and a first heater and a second heater that heat the transfer belt, wherein, the first heater has higher performance to uniformly heat an entire area of the transfer belt than the second heater; and the second heater has higher performance to respond to a temperature change of the transfer belt in a case of output change than the first heater.
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公开(公告)号：US09939749B2
公开(公告)日：2018-04-10
申请号：US15675805
申请日：2017-08-14
发明人： Atsuhiro Wakimoto
CPC分类号： G03G15/0189 , G03G15/161 , G03G15/162 , G03G21/12 , G03G21/206 , G03G2215/00772 , G03G2215/0106 , G03G2215/0132 , G03G2215/0138 , G03G2215/1661
摘要： An image forming apparatus includes an intermediate transfer belt and a developer unit. The image forming apparatus includes a cooling unit, a cleaning roller, and an auxiliary brush. The cooling unit cools a predetermined component by sending air by a fan inside the image forming apparatus. The cleaning roller removes remaining toner on the intermediate transfer belt at an upstream side of a region facing the developer unit in a rotationally moving direction of the intermediate transfer belt and at an upstream side of a region with which the image carrier is in contact in the intermediate transfer belt. The auxiliary brush located on an outer surface of the developer unit so as to close the clearance between the intermediate transfer belt and the developer unit and is in contact with the intermediate transfer belt to clean the intermediate transfer belt.
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公开(公告)号：US09897952B2
公开(公告)日：2018-02-20
申请号：US15241268
申请日：2016-08-19
发明人： Yoshifumi Hasebe , Tadao Kamano , Takashi Ogiwara
CPC分类号： G03G15/2028 , B65H2511/152 , G03G15/5029 , G03G15/6552 , G03G2215/00421 , G03G2215/00772 , G03G2215/00911
摘要： An image forming apparatus comprises a paper feeding unit which feeds a sheet-shaped recording medium, an image forming unit which forms a toner image on the recording medium fed from the paper feeding unit, a fixing unit which fixes the toner image formed by the image forming unit on the recording medium, a stacking unit which stacks the recording medium on which the toner image is fixed by the fixing unit, a temperature sensor which detects the surface temperature of the recording mediums stacked on the stacking unit and a control unit which determines, according to the printing information of the recording medium, whether or not to feed a new recording medium from the paper feeding unit when the surface temperature of the recording mediums detected by the temperature sensor is above a threshold temperature.
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公开(公告)号：US09684268B2
公开(公告)日：2017-06-20
申请号：US15185121
申请日：2016-06-17
发明人： Ryosuke Kimura
CPC分类号： G03G15/1605 , G03G15/0189 , G03G15/1675 , G03G15/6558 , G03G2215/00767 , G03G2215/00772 , G03G2215/00776 , G03G2215/0132
摘要： An image forming apparatus includes a plurality of image carriers, an intermediate transfer body, a plurality of primary transfer members, a secondary transfer member, a first guide member, and a controller. The first guide member guides a recording medium along a conveying direction. The controller controls a primary transfer bias and a secondary transfer bias. A plurality of the primary transfer members include an upstream side primary transfer member and a downstream side primary transfer member. The controller makes an absolute value of the primary transfer bias applied to the downstream side primary transfer member larger than an absolute value of the primary transfer bias applied to the upstream side primary transfer member. The controller lowers an absolute value of the secondary transfer bias when the recording medium separates from the first guide member.
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公开(公告)号：US20170131663A1
公开(公告)日：2017-05-11
申请号：US15333217
申请日：2016-10-25
申请人： Ryuichi KIKEGAWA
发明人： Ryuichi KIKEGAWA
IPC分类号： G03G15/16
CPC分类号： G03G15/55 , G03G15/1675 , G03G2215/00772
摘要： An image forming apparatus includes an image bearer on which an image is formed; a transfer device to form a transfer portion between the image bearer and the transfer device; a voltage application device to apply a transfer voltage to the transfer device to transfer the image from the image bearer to a transfer target at the transfer portion; an abnormality sensor to detect an abnormal level of the transfer voltage; a temperature sensor to detect an ambient temperature; and a control circuit. The control circuit controls the voltage application device to continue applying the transfer voltage irrespective of whether the abnormality sensor has detected the abnormal level of the transfer voltage when a detection temperature of the temperature sensor is below a predetermined temperature.
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公开(公告)号：US20160320746A1
公开(公告)日：2016-11-03
申请号：US15105529
申请日：2014-12-15
发明人： Masahiro Makino , Masami Hano
CPC分类号： G03G21/20 , G03G15/0266 , G03G15/043 , G03G15/065 , G03G21/1814 , G03G2215/00772 , G03G2215/00776
摘要： To provide an image forming apparatus capable of suppressing an increase in the cost of a process cartridge and capable of reducing image defects caused by replacement of the process cartridge.A process cartridge including a charging roller and a developing unit is attachable to and detachable from an image forming apparatus. A development temperature sensor is disposed in the developing unit. An in-device temperature sensor is disposed outside the process cartridge inside the image forming apparatus. In the case where a temperature detected by the development temperature sensor is lower than a temperature detected by the in-device temperature-humidity sensor, a peak-to-peak voltage of an alternating-current voltage applied to the charging roller is set based on the result of detection by the development temperature sensor.
摘要翻译： 包括充电辊和显影单元的处理盒可附接到图像形成装置并可从其拆卸。 在显影单元中设置显影温度传感器。 设备内温度传感器设置在图像形成装置内部的处理盒的外部。 在由显影温度传感器检测到的温度低于由器件内温度 - 湿度传感器检测到的温度的情况下，基于施加到充电辊的交流电压的峰峰值电压被设定为基于 由显影温度传感器检测的结果。
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