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1. 发明授权

US10474071B2 Fixing device having sheet separation members which are displaced by different amounts according to a change in diameter of a heated rotator, and image forming apparatus 有权
公开(公告)号：US10474071B2
公开(公告)日：2019-11-12
申请号：US15439619
申请日：2017-02-22
申请人： KONICA MINOLTA, INC.
发明人： Toru Hayase , Koji Yamamoto
IPC分类号： G03G15/20 , G03G21/16 , G03G15/00
摘要： A fixing device is configured to fix a toner image to a sheet by heat and includes: a heating rotator; a pressurizing roller contacting with the heating rotator; a heater configured to heat the heating rotator such that the heat is transferred to the sheet passing through a contact portion between the heating rotator and the pressurizing roller; a plurality of separation claws configured to separate the sheet from the heating rotator such that the sheet passing through the contact portion is not caught in the heating rotator, the separation claws being provided opposite to the heating rotator; and an adjustor configured to adjust positions of the separation claws relative to the heating rotator such that distances between the separation claws and the heating rotator are equal to each other.

2. 发明申请

US20180217540A1 FIXING APPARATUS AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20180217540A1
公开(公告)日：2018-08-02
申请号：US15873276
申请日：2018-01-17
申请人： Konica Minolta, Inc.
发明人： Masanori Murakami , Toru Hayase , Mamoru Fukaya , Hideaki Ikeda
IPC分类号： G03G15/20
CPC分类号： G03G15/2039 , G03G15/2028 , G03G15/2042 , G03G15/2053 , G03G15/206 , G03G15/2064 , G03G2215/2035
摘要： A fixing apparatus includes: an endless fixing belt; a pad member having a receiving surface and a supported surface; a pressing rotator pressing the fixing belt against the receiving surface and forming a nip portion between an outer circumferential surface of the fixing belt and the pressing rotator; a supporting member supporting the pad member; and a heating source to heat the fixing belt. The supporting member includes a base abutting on the supported surface of the pad member, and an erected wall erected from the base to partition a space inside the fixing belt into an upstream space and a downstream space. The erected wall is displaced upstream or downstream in a recording-material transport direction, from an intermediate position of the nip portion. The heating source is disposed in a larger one of the upstream space and the downstream space.

3. 发明授权

US09581946B2 Fixing device having heating section support with hole for releasing heat 有权
标题翻译：具有加热部分支撑件的固定装置具有用于释放热量的孔
公开(公告)号：US09581946B2
公开(公告)日：2017-02-28
申请号：US14983965
申请日：2015-12-30
申请人： Konica Minolta, Inc.
发明人： Toru Hayase , Koji Yamamoto
IPC分类号： G03G15/20 , G03G21/16
CPC分类号： G03G15/2053 , G03G15/2017 , G03G21/1685 , G03G2215/2019 , G03G2215/2038 , G03G2221/1639
摘要： A fixing device having: a fixing member extending in a first predetermined direction; a heating roller extending in the first predetermined direction; a fixing belt stretched between the fixing member and the heating roller and being annular when viewed in a plan view in the first predetermined direction; a heating section heating the heating roller and being provided in the heating roller; a first support section supporting the heating roller in such a manner that the heating roller is movable with respect to the fixing member along a predetermined plane perpendicular to the first predetermined direction; a pressure section exerting a force upon the heating roller in such a direction that the heating roller moves away from the fixing member; and a second support section supporting the heating section in such a manner that the heating section is movable together with the heating roller.
摘要翻译：一种固定装置，具有：沿第一预定方向延伸的固定构件; 加热辊，沿第一预定方向延伸; 定影带在所述固定构件和所述加热辊之间延伸并且在沿所述第一预定方向的平面图中观察时呈环形; 加热部，加热所述加热辊并设置在所述加热辊中; 支撑所述加热辊的第一支撑部分，使得所述加热辊可以沿着垂直于所述第一预定方向的预定平面相对于所述固定部件移动; 加压辊沿着加热辊从固定部件移开的方向施加力的压力部; 以及支撑加热部的第二支撑部，使得加热部与加热辊一起移动。

4. 发明授权

US10241451B2 Fixing apparatus and image forming apparatus 有权
公开(公告)号：US10241451B2
公开(公告)日：2019-03-26
申请号：US15873276
申请日：2018-01-17
申请人： KONICA MINOLTA, INC.
发明人： Masanori Murakami , Toru Hayase , Mamoru Fukaya , Hideaki Ikeda
IPC分类号： G03G21/00 , G03G15/20
摘要： A fixing apparatus includes: an endless fixing belt; a pad member having a receiving surface and a supported surface; a pressing rotator pressing the fixing belt against the receiving surface and forming a nip portion between an outer circumferential surface of the fixing belt and the pressing rotator; a supporting member supporting the pad member; and a heating source to heat the fixing belt. The supporting member includes a base abutting on the supported surface of the pad member, and an erected wall erected from the base to partition a space inside the fixing belt into an upstream space and a downstream space. The erected wall is disposed upstream or downstream in a recording-material transport direction, from an intermediate position of the nip portion. The heating source is disposed in a larger one of the upstream space and the downstream space.

5. 发明授权

US09551961B2 Fixing device having heating section support with hole for releasing heat 有权
公开(公告)号：US09551961B2
公开(公告)日：2017-01-24
申请号：US14983965
申请日：2015-12-30
申请人： Konica Minolta, Inc.
发明人： Toru Hayase , Koji Yamamoto
IPC分类号： G03G15/20 , G03G21/16
摘要： A fixing device having: a fixing member extending in a first predetermined direction; a heating roller extending in the first predetermined direction; a fixing belt stretched between the fixing member and the heating roller and being annular when viewed in a plan view in the first predetermined direction; a heating section heating the heating roller and being provided in the heating roller; a first support section supporting the heating roller in such a manner that the heating roller is movable with respect to the fixing member along a predetermined plane perpendicular to the first predetermined direction; a pressure section exerting a force upon the heating roller in such a direction that the heating roller moves away from the fixing member; and a second support section supporting the heating section in such a manner that the heating section is movable together with the heating roller.

6. 发明授权

US09507300B2 Fixing device 有权
标题翻译：固定装置
公开(公告)号：US09507300B2
公开(公告)日：2016-11-29
申请号：US14664153
申请日：2015-03-20
申请人： Konica Minolta, Inc.
发明人： Toru Hayase , Mamoru Fukaya , Naoki Kataoka , Tsuyoshi Tamaru
IPC分类号： G03G15/20 , G03G21/16
CPC分类号： G03G15/2053 , G03G15/2017 , G03G15/2035 , G03G15/2064 , G03G21/16 , G03G2221/1639 , G03G2221/1675
摘要： A fixing device having: a heating unit; a first rotating member and rotating in a first rotational direction; a second rotating member contacting the first rotating member and thereby forming a nip through which a printing medium passes, wherein the second rotating member rotates in a second rotational direction opposite to the first rotational direction; a reflective member provided around the first rotating member and having a reflection surface provided so as to face the first rotating member; and an inhibitory member inhibiting air in a space between the reflective member and the first rotating member from flowing out through a first gap between a downstream end of the reflective member in the first rotational direction and a closest portion of the first rotating member to the downstream end of the reflective member, wherein the inhibitory member overlaps with a part of the first gap.
摘要翻译：一种定影装置，具有：加热单元; 第一旋转构件，并且沿第一旋转方向旋转; 第二旋转构件，其与第一旋转构件接触，从而形成打印介质通过的辊隙，其中第二旋转构件沿与第一旋转方向相反的第二旋转方向旋转; 反射部件，设置在所述第一旋转部件的周围，并且具有设置成面向所述第一旋转部件的反射面; 并且抑制构件抑制反射构件和第一旋转构件之间的空间中的空气，通过第一旋转方向的反射构件的下游端与第一旋转构件的最接近的部分之间的第一间隙流出到下游反射构件的端部，其中抑制构件与第一间隙的一部分重叠。

7. 发明授权

US09091979B2 Fixing device and image forming apparatus having a fixing belt whose rotation center is shifted toward a recording-paper conveyance direction 有权
标题翻译：固定装置和图像形成装置具有旋转中心朝向记录纸传送方向移动的定影带
公开(公告)号：US09091979B2
公开(公告)日：2015-07-28
申请号：US14268680
申请日：2014-05-02
申请人： KONICA MINOLTA, INC.
发明人： Toru Hayase
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G2215/2025
摘要： A fixing device includes a rotatable fixing belt and a first fixing roller contacting an inner surface of the fixing belt. A second fixing roller contacts an outer surface of the fixing belt to hold the fixing belt against the first fixing roller to define a fixing nip region. An end restriction member supports ends of the fixing belt to restrict its rotation position. A support member is disposed at a position in the end restriction member to pivotally support the first fixing roller. The position is shifted with respect to a center position of the end restriction member corresponding to a rotation center of the fixing belt. The rotation center of the fixing belt is shifted toward a recording-paper conveyance direction of the fixing nip region with respect to a straight line connecting rotation centers of the first and second fixing rollers in a direction orthogonal to their rotation axes.
摘要翻译：定影装置包括可旋转的定影带和与定影带的内表面接触的第一定影辊。第二定影辊接触定影带的外表面以将定影带保持抵靠第一定影辊以限定定影夹持区域。端部限制构件支撑定影带的端部以限制其旋转位置。支撑构件设置在端部限制构件中的位置以枢转地支撑第一定影辊。该位置相对于与定影带的旋转中心对应的端部限制件的中心位置移动。定影带的旋转中心相对于连接第一和第二定影辊的旋转中心的直线在与其旋转轴线正交的方向上朝向定影夹持区域的记录纸输送方向移动。

8. 发明授权

US10338506B2 Fixing device 有权
公开(公告)号：US10338506B2
公开(公告)日：2019-07-02
申请号：US15139504
申请日：2016-04-27
申请人： Konica Minolta, Inc.
发明人： Koji Yamamoto , Mamoru Fukaya , Toru Hayase
IPC分类号： G03G15/20
摘要： A fixing device includes: a fixing rotator; a pressure rotator configured to be pressed into contact with the fixing rotator to form a nip portion; a heating section configured to be provided over an outer circumference of the fixing rotator in a non-contact manner with the fixing rotator and heat the fixing rotator; and a power shutdown section configured to shut down power supply to the heating section when temperature becomes higher than a predetermined setting temperature, wherein the heating section includes an infrared heater and a reflection member which covers the infrared heater and whose portion facing the fixing rotator is an opening portion, a longitudinal length of the reflection member is longer than a length in an axis direction of a light emitting unit of the infrared heater, and a temperature detection unit of the power shutdown section is arranged outside the reflection member.

9. 发明申请

US20130279932A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20130279932A1
公开(公告)日：2013-10-24
申请号：US13868496
申请日：2013-04-23
申请人： KONICA MINOLTA, INC.
发明人： Takuya Ishigai , Toru Hayase
IPC分类号： G03G15/20
CPC分类号： G03G15/2039 , G03G15/2017 , G03G15/2042
摘要： A fixing device thermally fixing an unfixed image by pressing a recording sheet against a heating rotating body using a resistance heating element as a heat source, comprising: a temperature monitoring unit monitoring temperature in a sheet passing region and in a non-sheet passing region of the heating rotating body; a power supply unit supplying power to the resistance heating element so that the temperature in the sheet passing region is maintained at a target temperature during thermal fixing; a cooling unit cooling the non-sheet passing region; and a control unit controlling cooling so that (i) electrical resistivity of the resistance heating element is lower in a region corresponding to the non-sheet passing region than in a region corresponding to the sheet passing region and (ii) an absolute value of a temperature difference between the sheet passing region and the non-sheet passing region does not exceed an allowable temperature difference.
摘要翻译：一种定影装置，其通过使用电阻加热元件作为热源将记录片材压靠加热旋转体热固定未定影图像，所述定影装置包括：温度监视单元，监测片材通过区域中的温度和非片材通过区域中的温度加热旋转体; 向电阻加热元件供电的电源单元，使得片材通过区域的温度在热固定期间保持在目标温度; 冷却单元冷却非片材通过区域; 以及控制单元，其控制冷却，使得（i）所述电阻加热元件的电阻率在与所述非片材通过区域相对应的区域中比在与所述片材通过区域相对应的区域中低，并且（ii）绝对值片材通过区域和非片材通过区域之间的温度差不超过允许的温度差。

10. 发明授权

US09645533B2 Image forming apparatus with cooling unit for cooling non-sheet passing region 有权
公开(公告)号：US09645533B2
公开(公告)日：2017-05-09
申请号：US13868496
申请日：2013-04-23
申请人： Konica Minolta, Inc.
发明人： Takuya Ishigai , Toru Hayase
IPC分类号： G03G15/20
CPC分类号： G03G15/2039 , G03G15/2017 , G03G15/2042
摘要： A fixing device thermally fixing an unfixed image by pressing a recording sheet against a heating rotating body using a resistance heating element as a heat source, comprising: a temperature monitoring unit monitoring temperature in a sheet passing region and in a non-sheet passing region of the heating rotating body; a power supply unit supplying power to the resistance heating element so that the temperature in the sheet passing region is maintained at a target temperature during thermal fixing; a cooling unit cooling the non-sheet passing region; and a control unit controlling cooling so that (i) electrical resistivity of the resistance heating element is lower in a region corresponding to the non-sheet passing region than in a region corresponding to the sheet passing region and (ii) an absolute value of a temperature difference between the sheet passing region and the non-sheet passing region does not exceed an allowable temperature difference.

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