公开(公告)号：US20230008258A1

公开(公告)日：2023-01-12

申请号：US17852381

申请日：2022-06-29

申请人： Hiromasa TAKAGI ,  Seiji SAITOH ,  Jun OKAMOTO ,  Tamotsu IKEDA ,  Yoshikuni SASAKI ,  Takahiro IMADA

发明人： Hiromasa TAKAGI ,  Seiji SAITOH ,  Jun OKAMOTO ,  Tamotsu IKEDA ,  Yoshikuni SASAKI ,  Takahiro IMADA

IPC分类号： G03G21/20 ,  G03G15/20 ,  G03G15/00

摘要： An image forming apparatus includes two rotators, a driver driving the rotators, a heating device to heat the rotator, a blower blowing air to the heating device, a temperature detector, a recording medium detector, a cover, an open-close detector, and circuitry. The circuitry detects an abnormal state and stops heat generation, determines whether the cover is closed using the open-close detector, controls the blower to blow air when the cover is closed, determines whether the recording medium is in the nip using the recording medium detector, controls the driver to rotate the two rotators when the cover is closed and no recording medium is in the nip, determines whether a temperature detected is equal to or lower than a threshold value before the cover is opened, and controls the blower to decrease an air volume when the temperature detected is equal to or lower than the threshold value.

公开(公告)号：US20230004107A1

公开(公告)日：2023-01-05

申请号：US17825471

申请日：2022-05-26

申请人： Seiji SAITOH ,  Takahiro IMADA ,  Yoshikuni SASAKI ,  Tamotsu IKEDA ,  Hiromasa TAKAGI ,  Jun OKAMOTO

发明人： Seiji SAITOH ,  Takahiro IMADA ,  Yoshikuni SASAKI ,  Tamotsu IKEDA ,  Hiromasa TAKAGI ,  Jun OKAMOTO

IPC分类号： G03G15/20

摘要： A contact-separation device brings a contact-separation member into contact with a contacted member separably and includes a biasing member that generates a biasing force. A presser presses the contact-separation member against the contacted member in a pressing direction with the biasing force from the biasing member. A cam presses the presser in an opposite direction being opposite to the pressing direction. The cam is rotatable and has a cam face. A cam follower has a cam contact face that contacts the cam face of the cam. The cam contact face is curved to project toward the cam. The cam contact face has a curvature that is smaller than a greatest curvature of the cam face of the cam and is greater than a smallest curvature of the cam face of the cam.

公开(公告)号：US20240319636A1

公开(公告)日：2024-09-26

申请号：US18605881

申请日：2024-03-15

申请人： Tamotsu IKEDA ,  Yutaka IKEBUCHI ,  Yuusuke FURUICHI ,  Seiji SAITOH ,  Jun OKAMOTO

发明人： Tamotsu IKEDA ,  Yutaka IKEBUCHI ,  Yuusuke FURUICHI ,  Seiji SAITOH ,  Jun OKAMOTO

IPC分类号： G03G15/20

CPC分类号： G03G15/2017 ,  G03G15/2064

摘要： A fixing device includes a fixing rotator, a pressure rotator, a planar heater, a holder, a conductor, and a support. The pressure rotator presses the fixing rotator to form a fixing nip between the pressure rotator and the fixing rotator. The planar heater contacts an inner surface of the fixing rotator. The holder holds the heater and guides the fixing rotator. The conductor is grounded and contacts the inner surface of the fixing rotator. The support supports the holder and has a shape of regulating rotation of the conductor.

公开(公告)号：US20240310776A1

公开(公告)日：2024-09-19

申请号：US18599370

申请日：2024-03-08

申请人： Jun OKAMOTO ,  Yuusuke FURUICHI ,  Seiji SAITOH ,  Tamotsu IKEDA ,  Shigeo NANNO

发明人： Jun OKAMOTO ,  Yuusuke FURUICHI ,  Seiji SAITOH ,  Tamotsu IKEDA ,  Shigeo NANNO

IPC分类号： G03G21/16 ,  G03G15/20

CPC分类号： G03G21/1619 ,  G03G15/20 ,  G03G21/1633 ,  G03G21/1647 ,  G03G21/1652 ,  G03G2221/1639

摘要： A fixing device detachably attachable to an image forming apparatus includes a housing frame having an open front side in an insertion direction in which the fixing device is inserted into the image forming apparatus. The housing frame includes a support plate, as a back side of the housing frame in the insertion direction, and a pair of side plates extending in the insertion direction. The support plate includes an extension extending beyond one of the pair of side plates. The extension includes an engaged portion to be engaged with an engaging portion of the image forming apparatus when the fixing device is mounted on the image forming apparatus.

公开(公告)号：US20230236533A1

公开(公告)日：2023-07-27

申请号：US18063326

申请日：2022-12-08

申请人： Tamotsu IKEDA ,  Toshio Ogiso

发明人： Tamotsu IKEDA ,  Toshio Ogiso

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064 ,  G03G2215/2061

摘要： A fixing device includes a fixing rotator, a pressure rotator, a pressure plate, a pressing force adjuster, an entrance guide, an exit guide, and a guide. The pressure rotator presses the fixing rotator to form a nip between the fixing rotator and the pressure rotator. The pressure plate rotates about a fulcrum to press the pressure rotator. The pressing force adjuster adjusts a pressing force of the pressure rotator. The entrance guide guides a recording medium entering the nip. The exit guide guides the recording medium ejected from the nip. The guide guides the pressure rotator in a direction inclined from a line connecting a rotation center of the fixing rotator and a rotation center of the pressure rotator toward downstream in a conveyance direction of the recording medium.

公开(公告)号：US20150117901A1

公开(公告)日：2015-04-30

申请号：US14506780

申请日：2014-10-06

申请人： Mitsutoshi KICHISE ,  Kenji NAKAMURA ,  Takeshi YAMASHITA ,  Tamotsu IKEDA ,  Minoru TOYODA ,  Yasuhide MATSUNO

发明人： Mitsutoshi KICHISE ,  Kenji NAKAMURA ,  Takeshi YAMASHITA ,  Tamotsu IKEDA ,  Minoru TOYODA ,  Yasuhide MATSUNO

IPC分类号： G03G21/18 ,  G03G21/00

CPC分类号： G03G21/1814 ,  G03G15/0896 ,  G03G2215/0132

摘要： A process unit includes a rotatable image bearer to bear a toner image on a surface thereof; a developer bearer to supply developer to the image bearer and including a first range, a second range different in property from the first range and adjacent to the first range on an outer side in an axial direction via a first boundary, and a second boundary on an outer side of the first boundary in the axial direction; a cleaning member to remove residual developer from the image bearer; and an abutment part disposed to contact the surface of the image bearer to remove a foreign substance from the image bearer. The abutment part is disposed astride at least one of a first position on the image bearer corresponding to the first boundary, and a second position on the image bearer corresponding to the second boundary.

摘要翻译： 处理单元包括可旋转图像承载件，以在其表面上承载调色剂图像; 将开发者提供给图像载体，并且包括第一范围，属性与第一范围不同的第二范围，并且与第一范围相邻，第一范围在第一边界的轴向方向上在外侧;第二边界 在轴向上的第一边界的外侧; 用于从图像承载体去除残留显影剂的清洁构件; 以及抵靠部件，设置成与图像承载件的表面接触以从图像承载体移除异物。 邻接部跨越与第一边界相对应的图像载体上的第一位置和与第二边界对应的图像载体上的第二位置跨越。

公开(公告)号：US20090104886A1

公开(公告)日：2009-04-23

申请号：US12254221

申请日：2008-10-20

申请人： Takanori MINAMINO ,  Tamotsu IKEDA

发明人： Takanori MINAMINO ,  Tamotsu IKEDA

IPC分类号： H04B1/26

CPC分类号： H03D7/168

摘要： A signal processing device includes: a first converting unit for frequency-converting the input signal into a signal in a first frequency band; a filter for cutting off the frequency component outside a predetermined pass band; a second converting unit for frequency-converting the signal from the first frequency band to a second frequency band; third converting unit for converting the signal in the second frequency band into a signal in a third frequency band coinciding with the pass band; an oscillating unit for oscillating a signal used for frequency conversion of the third converting unit; and a detecting unit for detecting a frequency error between oscillation frequency of the signal oscillated by the oscillating unit and frequency of a signal used for frequency conversion from the second frequency band to the third frequency band coinciding with the pass band, and outputting an error signal indicating the frequency error.

摘要翻译： 信号处理装置包括：第一转换单元，用于将输入信号频率转换为第一频带的信号; 用于切断预定通带外的频率分量的滤波器; 第二转换单元，用于将来自第一频带的信号频率转换为第二频带; 第三转换单元，用于将第二频带中的信号转换为与通带一致的第三频带中的信号; 用于振荡用于第三转换单元的频率转换的信号的振荡单元; 以及检测单元，用于检测由所述振荡单元振荡的信号的振荡频率与用于从所述第二频带到与所述通带一致的所述第三频带的频率变换的信号的频率之间的频率误差，并输出误差信号 指示频率误差。

公开(公告)号：US20230251592A1

公开(公告)日：2023-08-10

申请号：US18147454

申请日：2022-12-28

申请人： Toshio OGISO ,  Tamotsu IKEDA

发明人： Toshio OGISO ,  Tamotsu IKEDA

IPC分类号： G03G15/20

CPC分类号： G03G15/2028 ,  G03G15/2053

摘要： A fixing device includes a fixing rotator, a pressure rotator, a pressure plate, a pressing force, an entrance guide, an exit guide, and a transmission. The pressure rotator presses the fixing rotator to form a nip between the fixing rotator and the pressure rotator. The pressure plate rotates about a fulcrum to press the pressure rotator. The pressing force adjuster adjusts a pressing force of the pressure rotator. The entrance guide guides a recording medium entering the nip. The exit guide guides the recording medium ejected from the nip. The transmission transmits a displacement of the pressure plate to the entrance guide and the exit guide.

公开(公告)号：US20220373950A1

公开(公告)日：2022-11-24

申请号：US17724028

申请日：2022-04-19

申请人： Toshio OGISO ,  Tamotsu IKEDA

发明人： Toshio OGISO ,  Tamotsu IKEDA

IPC分类号： G03G15/20

摘要： A fixing device includes a heater, a heating rotator, a nip formation rotator, and an entry guide. The entry guide guides each of a first recording medium having a predetermined length or more and a second recording medium having a length less than the predetermined length to the fixing nip. The entry guide includes a first and second entry guide portion. The first entry guide portion guides the first recording medium toward a harder one of the heating rotator and the nip formation rotator and has an opening. The second entry guide portion guides the second recording passing through the opening to the fixing nip along a reference line connecting an entry and exit of the fixing nip or guides the second recording medium from an area including a softer one of the heating rotator and the nip formation rotator with respect to the reference line to the fixing nip.

公开(公告)号：US20120195652A1

公开(公告)日：2012-08-02

申请号：US13338765

申请日：2011-12-28

申请人： Yoshiharu TAKAHASHI ,  Chikara HIRAOKA ,  Tamotsu IKEDA ,  Kohta SAKAYA ,  Yoshihiro KAWAKAMI

发明人： Yoshiharu TAKAHASHI ,  Chikara HIRAOKA ,  Tamotsu IKEDA ,  Kohta SAKAYA ,  Yoshihiro KAWAKAMI

IPC分类号： G03G15/20

CPC分类号： G03G15/2028

摘要： A fixing device, including a fixing member; an opposing member contacting the fixing member to form a fixing nip; plural separation assisting members; a contact direction biasing member contacting an end of the auxiliary separation members to the surface of the fixing member; a contact and release switching member switching contacting the end of the auxiliary separation members to the surface of the fixing member and releasing the end of the auxiliary separation members therefrom; a fixing exit guide member guiding a recording medium to a discharge direction and separated from the fixing member by the separation assisting member; a first rotating member near the auxiliary separation members downstream from an end thereof; and a second rotating member guiding a recording medium guided by the fixing exit guide member in the recording medium conveyance direction while rotating.

摘要翻译： 一种固定装置，包括固定构件; 与所述固定构件接触以形成定影辊隙的相对构件; 多个分离辅助构件; 接触方向偏压构件，其与所述辅助分离构件的端部接触所述固定构件的表面; 接触释放切换构件将辅助分离构件的端部接触到固定构件的表面并且从其中释放辅助分离构件的端部; 固定出口引导构件，其将记录介质引导到排出方向，并由所述分离辅助构件与所述固定构件分离; 在辅助分离构件的一端的下游附近的第一旋转构件; 以及第二旋转构件，其在旋转时引导由所述定影出口引导构件在所述记录介质输送方向上引导的记录介质。