公开(公告)号：US09645533B2

公开(公告)日：2017-05-09

申请号：US13868496

申请日：2013-04-23

Applicant: Konica Minolta, Inc.

Inventor： Takuya Ishigai ,  Toru Hayase

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/2017 ,  G03G15/2042

Abstract: 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.

公开(公告)号：US09527688B2

公开(公告)日：2016-12-27

申请号：US14885010

申请日：2015-10-16

Applicant: Konica Minolta, Inc.

Inventor： Koji Yamamoto ,  Mamoru Fukaya ,  Masataka Yagi ,  Toru Hayase ,  Ryuta Akiyama

IPC: B65G39/16 ,  B65H5/06 ,  B41J13/02 ,  G03G15/20 ,  B65H5/02

CPC classification number: B65H5/062 ,  B41J13/025 ,  B65H5/025 ,  B65H2404/25 ,  B65H2404/255 ,  G03G15/2017 ,  G03G2215/00151

Abstract: A belt-drive device includes a roller, a belt, and a meandering prevention member. The roller is rotatable about an axis. The belt is wound on an outer circumferential surface of the roller. The meandering prevention member is attached to an end of the roller and abuts a side of the belt in the direction of the axis. The meandering prevention member is elastically deformable and has an annular shape. The meandering prevention member has an inner circumferential surface whose diameter is less than an outer diameter of the roller before the meandering prevention member is attached to the roller.

Abstract translation: 皮带驱动装置包括滚子，皮带和曲折防止部件。 辊可绕轴线旋转。 皮带卷绕在滚筒的外圆周表面上。 弯曲防止构件附接到辊的端部并且沿着轴线的方向邻接带的一侧。 曲折防止构件是可弹性变形的并且具有环形形状。 曲折防止构件具有直径小于滚子外径的内圆周表面，该曲面防止构件安装在滚子上。

公开(公告)号：US20160122130A1

公开(公告)日：2016-05-05

申请号：US14885010

申请日：2015-10-16

Applicant: Konica Minolta, Inc.

Inventor： Koji Yamamoto ,  Mamoru Fukaya ,  Masataka Yagi ,  Toru Hayase ,  Ryuta Akiyama

IPC: B65G13/07

CPC classification number: B65H5/062 ,  B41J13/025 ,  B65H5/025 ,  B65H2404/25 ,  B65H2404/255 ,  G03G15/2017 ,  G03G2215/00151

Abstract: A belt-drive device includes a roller, a belt, and a meandering prevention member. The roller is rotatable about an axis. The belt is wound on an outer circumferential surface of the roller. The meandering prevention member is attached to an end of the roller and abuts a side of the belt in the direction of the axis. The meandering prevention member is elastically deformable and has an annular shape. The meandering prevention member has an inner circumferential surface whose diameter is less than an outer diameter of the roller before the meandering prevention member is attached to the roller.

Abstract translation: 皮带驱动装置包括滚子，皮带和曲折防止部件。 辊可绕轴线旋转。 皮带卷绕在滚筒的外圆周表面上。 弯曲防止构件附接到辊的端部并且沿着轴线的方向邻接带的一侧。 曲折防止构件是可弹性变形的并且具有环形形状。 曲折防止构件具有直径小于滚子外径的内圆周表面，该曲面防止构件安装在滚子上。

公开(公告)号：US09207599B2

公开(公告)日：2015-12-08

申请号：US14663982

申请日：2015-03-20

Applicant: Konica Minolta, Inc.

Inventor： Toru Hayase ,  Mamoru Fukaya ,  Naoki Kataoka ,  Tsuyoshi Tamaru

IPC: G03G15/20

CPC classification number: G03G15/2053

Abstract: A fixing device having: a first rotating member 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 heating unit heating the first rotating member in a heating section not overlapping with the nip when viewed in a plan view in the predetermined direction; and a first reflective member facing at least a part of a portion of the first rotating member that is located on a downstream side in the first rotational direction relative to the heating section but on an upstream side in the first rotational direction relative to the nip, the first reflective member having a reflection surface on the side facing the first rotating member.

Abstract translation: 一种固定装置，具有：沿第一旋转方向旋转的第一旋转构件; 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; 所述加热单元在沿所述预定方向的平面图中观察时，在与所述辊隙不重叠的加热部中加热所述第一旋转构件; 以及第一反射构件，其面向所述第一旋转构件的相对于所述加热部位于所述第一旋转方向的下游侧的相对于所述辊隙的所述第一旋转方向的上游侧的部分的至少一部分， 所述第一反射构件在面向所述第一旋转构件的一侧具有反射面。

公开(公告)号：US08948625B2

公开(公告)日：2015-02-03

申请号：US13659441

申请日：2012-10-24

Applicant: Konica Minolta, Inc.

Inventor： Toru Hayase ,  Naoki Yamamoto

IPC: G03G15/20

CPC classification number: G03G15/2042 ,  G03G2215/2035

Abstract: 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.

Abstract translation: 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。