公开(公告)号：US08948625B2

公开(公告)日：2015-02-03

申请号：US13659441

申请日：2012-10-24

申请人： Konica Minolta, Inc.

发明人： Toru Hayase ,  Naoki Yamamoto

IPC分类号： G03G15/20

CPC分类号： G03G15/2042 ,  G03G2215/2035

摘要： Image forming apparatus including: fixing device thermally fixing unfixed image on recording sheet by causing recording sheet to pass through nip formed by pressing member pressing against outer circumferential surface of heating rotating body having resistance heating layer; temperature measuring unit measuring temperatures of resistance heating layer in measurement regions set by sectioning outer circumferential surface of heating rotating body along rotational axis; information obtaining unit obtaining information indicating temperature changes in measurement regions in one rotational period of heating rotating body, by sampling measured temperatures; and abnormality judging unit judging whether abnormality has occurred in resistance heating layer based on result of comparison of information that is made between measurement regions in each combination, wherein one or more combinations of measurement regions have been set for each of paper-passing and non-paper-passing regions in nip by using all measurement regions in each of paper-passing and non-paper-passing regions.

摘要翻译： 图像形成装置包括：通过使记录片材通过按压部件压靠形成的辊隙的方式将定影未定影图像定影在记录片材上，该加压部件按压具有电阻加热层的加热旋转体的外周面; 温度测量单元，通过沿着加热旋转体的外周面切割而设置的测量区域中的电阻加热层的温度; 信息获取单元通过采样测量的温度来获取指示加热旋转体的一个旋转周期中的测量区域的温度变化的信息; 以及异常判定单元，基于在每个组合中的测量区域之间进行的信息的比较的结果来判断电阻加热层中是否发生异常，其中针对每个组合中的每一个设置了一个或多个测量区域的组合， 通过使用每个纸张通过区域和非纸张通过区域中的所有测量区域，在压区中的通纸区域。

公开(公告)号：US11156947B2

公开(公告)日：2021-10-26

申请号：US16860902

申请日：2020-04-28

申请人： Konica Minolta, Inc.

发明人： Naoki Yamamoto

IPC分类号： G03G15/20

摘要： A fixing device includes: an endless fixing belt; a pad unit and a driven roller disposed opposite to an inner peripheral surface of the fixing belt so as to entrain the fixing belt; a pair of first supports located so as to sandwich the fixing belt in a width direction of the fixing belt, the pair of first supports supporting the pad unit by fixing the pad unit; and a pair of second supports located so as to sandwich the pair of first supports in the width direction of the fixing belt, the pair of second supports rotatably journaling the driven roller.

公开(公告)号：US10180644B2

公开(公告)日：2019-01-15

申请号：US15644701

申请日：2017-07-07

申请人： KONICA MINOLTA, INC.

发明人： Yoshikazu Tsubotani ,  Naoki Yamamoto

IPC分类号： G03G15/20

摘要： A fixing device includes: a fixing belt of an endless shape wound to pass over a heating-side member and a nip forming member; and a pressing roller driven to rotate in a state of being brought into tight contact with the nip forming member through the fixing belt, wherein a toner image is fixed to a recording medium at a nip portion at which the fixing belt and the pressing roller are brought into tight contact with each other by causing the pressing roller to be in tight contact with the fixing belt and driving the pressing roller to rotate, a guide member guiding the fixing belt to a space between the nip forming member and the heating-side member is disposed to be separate from the nip forming member, and a sliding member is disposed at least in a contact portion between the nip forming member and the fixing belt.

公开(公告)号：US10005663B2

公开(公告)日：2018-06-26

申请号：US14295753

申请日：2014-06-04

申请人： Konica Minolta, Inc.

发明人： Naoki Yamamoto ,  Kanji Nakayama ,  Keita Saito ,  Dai Suwama

IPC分类号： G03G15/20 ,  B81C3/00

CPC分类号： B81C3/005 ,  B81C2203/032 ,  H01L2224/95146

摘要： There is provided a method of manufacturing a pattern substrate in which a pattern is formed on the surface of the substrate. The manufacturing method includes a step of preparing the substrate and a step of arranging a liquid-repellent or lyophilic material on the surface of the substrate so as to form the pattern on the surface of the substrate in which the surface of the substrate has a liquid-repellent region and a lyophilic region, the pattern is formed by one of the liquid-repellent region and the lyophilic region and the pattern is used to locate a component by the surface tension of a liquid member.

公开(公告)号：US11774892B2

公开(公告)日：2023-10-03

申请号：US17804111

申请日：2022-05-26

申请人： Konica Minolta, Inc.

发明人： Naoki Yamamoto ,  Etsuaki Urano

IPC分类号： G03G15/20

CPC分类号： G03G15/2064

摘要： Provided is a fixing apparatus that fixes an unfixed image on a sheet by causing the sheet to pass through a fixing nip formed by pressing a belt by a pressurizing roller, a lubricant being applied on an inner peripheral surface of the belt, the pressurizing roller being disposed on an outer peripheral side of the belt, and the fixing apparatus includes: a non-rotary pad including a pressed part disposed on an inner peripheral side of the belt and pressed by the pressurizing roller via the belt, and a guide that is disposed upstream of the pressed part in a belt circulating direction and guides the belt to the fixing nip; and a pressure application part that applies a pressure between an end of the belt in a belt width direction and the guide at a position upstream of and immediately before the fixing nip in the belt circulating direction.

公开(公告)号：US20190310574A1

公开(公告)日：2019-10-10

申请号：US16361090

申请日：2019-03-21

申请人： Konica Minolta, Inc.

发明人： Naoki Yamamoto

IPC分类号： G03G15/20

摘要： The fixing device includes an endless fixing belt, a pressing member, a pressing rotator, and a heating unit. The pressing member includes a counter face that faces the inner peripheral surface of the fixing belt. The counter face includes a curved portion that is concavely curved and an extended portion. The shape of the curved portion in a cross section orthogonal to the width direction of the fixing belt is configured to approach the center of the pressing rotator as it extends toward the downstream in the conveying direction. The extended portion is continuous with the curved portion and is provided at the downstream of the curved portion in the conveying direction of the recording medium. The shape of the extended portion in the cross section is configured to leave away from the center of the pressing rotator as it extends toward the downstream in the conveying direction

公开(公告)号：US09235180B2

公开(公告)日：2016-01-12

申请号：US13658455

申请日：2012-10-23

申请人： KONICA MINOLTA, INC.

发明人： Takuya Ishigai ,  Naoki Yamamoto

IPC分类号： G03G15/20 ,  G03G15/00

CPC分类号： G03G15/55 ,  G03G15/2057

摘要： A fixing device thermally fixes an unfixed toner image onto a recording sheet and includes: a rotatable heating element that is endless and includes a resistive heating layer that generates heat upon application of voltage; a power source for placing voltage across the resistive heating layer; an ammeter for measuring the electric current flowing through the resistive heating layer, and a controller for determining whether the resistive heating layer has a scratch by monitoring an amount of change between a value of electric current that flows through the resistive heating in absence of a scratch and a value of electric current actually measured by the ammeter. The resistive heating layer exhibits resistivity anisotropy satisfying R1

摘要翻译： 定影装置将未定影的调色剂图像热定影到记录片材上，包括：可旋转加热元件，其是环形的，并且包括在施加电压时产生热量的电阻加热层; 用于在电阻加热层上放置电压的电源; 用于测量流过电阻加热层的电流的电流表，以及控制器，用于通过监测不存在刮擦而流过电阻加热的电流值之间的变化量来确定电阻加热层是否具有划痕 和电流表实际测量的电流值。 电阻加热层表现出满足R1

公开(公告)号：US10520869B2

公开(公告)日：2019-12-31

申请号：US16361090

申请日：2019-03-21

申请人： Konica Minolta, Inc.

发明人： Naoki Yamamoto

IPC分类号： G03G15/20

摘要： The fixing device includes an endless fixing belt, a pressing member, a pressing rotator, and a heating unit. The pressing member includes a counter face that faces the inner peripheral surface of the fixing belt. The counter face includes a curved portion that is concavely curved and an extended portion. The shape of the curved portion in a cross section orthogonal to the width direction of the fixing belt is configured to approach the center of the pressing rotator as it extends toward the downstream in the conveying direction. The extended portion is continuous with the curved portion and is provided at the downstream of the curved portion in the conveying direction of the recording medium. The shape of the extended portion in the cross section is configured to leave away from the center of the pressing rotator as it extends toward the downstream in the conveying direction.

公开(公告)号：US10048626B2

公开(公告)日：2018-08-14

申请号：US15058568

申请日：2016-03-02

申请人： KONICA MINOLTA, INC.

发明人： Takuto Shibuya ,  Naoki Yamamoto ,  Koji Takahashi

IPC分类号： G03G15/20

摘要： A fixing device includes a leading-end fixing value output part to output a leading-end fixing value indicating a leading-end fixing temperature and a leading-end separation value output part to output a leading-end separation value indicating a leading-end separation temperature. These output parts both output a higher value as a leading-end toner value representing a toner adhesion amount of a toner image in a leading area of a sheet is higher. A controller of the fixing device performs separation control to control a heating temperature by a heating source so that a leading-end set temperature at a fixing nip while the sheet leading area is passing through the fixing nip becomes equal to or higher than the leading-end fixing temperature. When the leading-end fixing value is lower than the leading-end separation value, the leading-end set temperature becomes equal to or higher than the leading-end separation temperature.

公开(公告)号：US10025240B2

公开(公告)日：2018-07-17

申请号：US15348429

申请日：2016-11-10

申请人： Konica Minolta, Inc.

发明人： Naoki Yamamoto

IPC分类号： G03G15/20

摘要： A fixation apparatus includes a first belt without end, a second belt without end which is in contact with an outer circumferential surface of the first belt, a pressurization member which is provided inside the first belt and pressurizes a portion of contact between the first belt and the second belt toward the second belt, a drive roller which is provided inside the second belt along the portion of contact and rotationally drives the second belt, and a heating unit which heats at least one of the first belt and the second belt and provides heat to a transfer target medium passing through the portion of contact. The drive roller is in contact with both of the first belt and the second belt.