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公开(公告)号：US11841648B2
公开(公告)日：2023-12-12
申请号：US17872899
申请日：2022-07-25
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideto Chino , Chikara Imaizumi
CPC classification number: G03G15/161 , G03G15/0131
Abstract: An image forming apparatus includes an intermediate transfer member, first and second transfer members, and a control unit. The control unit includes a first state where both the first and second transfer members are separated from the intermediate transfer member, a second state where the first transfer member contacts the intermediate transfer member and the second transfer member is separated from the intermediate transfer member, and a third state where both the first and second transfer members contact the intermediate transfer member. The control unit controls the driving member to move the moving unit, controls switch the first state to the second state and thereafter switch the second state to the third state. A rotation speed of the driving member when the second state is switched to the third state is lower than a rotation speed of the driving member when the first state is switched to the second state.
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2.发明授权公开(公告)号：US11106160B2
公开(公告)日：2021-08-31
申请号：US16919529
申请日：2020-07-02
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideto Chino
Abstract: A drive transmission device includes a driving gear, a follower gear, an intermediary gear, an output gear, and an elastic member. Transmission of a driving force from the driving gear to the follower gear and transmission of the driving force from the intermediary gear to the output gear are disabled, in a non-transmission state. In a transmission state, (i) the follower gear is moved by an elastic force of the elastic member to enable rotation of the follower gear by the driving force from the driving gear, and thereafter, (ii) the intermediary gear is rotated by the follower gear without rotating the output gear, and thereafter, the intermediary gear is enabled to transmit the driving force to the output gear.
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公开(公告)号：US10414606B2
公开(公告)日：2019-09-17
申请号：US15835962
申请日：2017-12-08
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideto Chino
Abstract: A drive transmission apparatus includes a first rotating unit rotated by driving force from a drive source and a second rotating unit rotated by the first rotating unit. The first and second rotating units include a first gear pair meshing at a first transmission ratio and second gear pair meshing at a second transmission ratio. A retention mechanism includes a protruded portion provided on the first rotating unit and a recessed portion provided on the second rotating unit, and is configured to retain a rotation angle of the second rotating unit by an engagement of the protruded portion and the recessed portion in a state where the first and second gear pairs are unmeshed.
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公开(公告)号：US10996617B2
公开(公告)日：2021-05-04
申请号：US16833999
申请日：2020-03-30
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideto Chino
Abstract: A developing cartridge mountable to a development rotary of an electrophotographic image forming apparatus, a coupling member for transmitting a rotational force from a main assembly engaging portion to a developing roller, the coupling member being engageable and disengageable relative to the engaging portion with rotation of the rotary, the coupling member being movable among a rotational force transmitting angular position, a pre-engagement angular position in which the coupling member is inclined relative to that in the transmitting angular position to engage with the engaging portion, and a disengaging angular position for disengaging therefrom; and an inclination regulating member movable between a regulating position for positioning the coupling member to the pre-engagement position and a retracted position, the inclination regulating member being movable from the retracted position to the regulating position by being abutted by a function member of the rotary.
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公开(公告)号：US20170102666A1
公开(公告)日：2017-04-13
申请号：US15384441
申请日：2016-12-20
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideto Chino
IPC: G03G21/16
CPC classification number: G03G21/1647 , G03G15/0173 , G03G15/0865 , G03G21/1676
Abstract: A developing cartridge mountable to a development rotary of an electrophotographic image forming apparatus, a coupling member for transmitting a rotational force from a main assembly engaging portion to a developing roller, the coupling member being engageable and disengageable relative to the engaging portion with rotation of the rotary, the coupling member being movable among a rotational force transmitting angular position, a pre-engagement angular position in which the coupling member is inclined relative to that in the transmitting angular position to engage with the engaging portion, and a disengaging angular position for disengaging therefrom; and an inclination regulating member movable between a regulating position for positioning the coupling member to the pre-engagement position and a retracted position, the inclination regulating member being movable from the retracted position to the regulating position by being abutted by a function member of the rotary.
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Patent Agency Ranking
公开(公告)号：US20150071684A1
公开(公告)日：2015-03-12
申请号：US14542862
申请日：2014-11-17
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideto Chino
IPC: G03G15/08
CPC classification number: G03G21/1647 , G03G15/0173 , G03G15/0865 , G03G21/1676
Abstract: A developing cartridge mountable to a development rotary of an electrophotographic image forming apparatus, a coupling member for transmitting a rotational force from a main assembly engaging portion to a developing roller, the coupling member being engageable and disengageable relative to the engaging portion with rotation of the rotary, the coupling member being movable among a rotational force transmitting angular positio, a pre-engagement angular position in which the coupling member is inclined relative to that in the transmitting angular position to engage with the engaging portion, and a disengaging angular position for disengaging therefrom; and an inclination regulating member movable between a regulating position for positioning the coupling member to the pre-engagement position and a retracted position, the inclination regulating member being movable from the retracted position to the regulating position by being abutted by a function member of the rotary.
Abstract translation: 可安装到电子照相图像形成装置的显影转盘的显影盒，用于将旋转力从主组件接合部分传递到显影辊的联接构件，所述联接构件可相对于接合部分接合和脱离， 所述联接构件可在旋转力传递角位置之间移动，所述联接构件相对于所述传递角位置相对于所述接合部分倾斜的预接合角位置以及用于分离的分离角位置 由此; 以及倾斜限制构件，其可在用于将所述联接构件定位到所述预接合位置的调节位置和缩回位置之间移动，所述倾斜调节构件可通过所述旋转的功能构件抵靠从所述缩回位置到所述调节位置 。
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公开(公告)号：US20130322930A1
公开(公告)日：2013-12-05
申请号：US13908251
申请日：2013-06-03
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideto Chino
IPC: G03G21/16
CPC classification number: G03G21/1647 , G03G15/0173 , G03G15/0865 , G03G21/1676
Abstract: A developing cartridge mountable to a development rotary of an electrophotographic image forming apparatus, a coupling member for transmitting a rotational force from a main assembly engaging portion to a developing roller, the coupling member being engageable and disengageable relative to the engaging portion with rotation of the rotary, the coupling member being movable among a rotational force transmitting angular positio, a pre-engagement angular position in which the coupling member is inclined relative to that in the transmitting angular position to engage with the engaging portion, and a disengaging angular position for disengaging therefrom; and an inclination regulating member movable between a regulating position for positioning the coupling member to the pre-engagement position and a retracted position, the inclination regulating member being movable from the retracted position to the regulating position by being abutted by a function member of the rotary.
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公开(公告)号：US20210223736A1
公开(公告)日：2021-07-22
申请号：US17224158
申请日：2021-04-07
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideto Chino
Abstract: A developing cartridge mountable to a development rotary of an electrophotographic image forming apparatus, a coupling member for transmitting a rotational force from a main assembly engaging portion to a developing roller, the coupling member being engageable and disengageable relative to the engaging portion with rotation of the rotary, the coupling member being movable among a rotational force transmitting angular position, a pre-engagement angular position in which the coupling member is inclined relative to that in the transmitting angular position to engage with the engaging portion, and a disengaging angular position for disengaging therefrom; and an inclination regulating member movable between a regulating position for positioning the coupling member to the pre-engagement position and a retracted position, the inclination regulating member being movable from the retracted position to the regulating position by being abutted by a function member of the rotary.
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公开(公告)号：US10824109B2
公开(公告)日：2020-11-03
申请号：US16388676
申请日：2019-04-18
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideto Chino , Junichi Ochi
Abstract: An elastic force of an elastic member 11 required for rotating a driven rotational body 8b is decreased.A first rotational body 8d and a second rotational body 9a arranged downstream of a driven rotational body 8b in a drive train that transmits a driving force from a driving rotational body 7 to a driven member 4 are included. The first rotational body 8d rotates in synchronization with the driven rotational body 8b. The second rotational body 9a is rotated by the first rotational body 8d and rotates the driven member 4. The first rotational body 8d rotates without rotating the second rotational body 9a when the driven rotational body 8b rotates by an elastic force of an elastic member 11.
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公开(公告)号：US20190243302A1
公开(公告)日：2019-08-08
申请号：US16388676
申请日：2019-04-18
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hideto Chino , Junichi Ochi
IPC: G03G21/16
CPC classification number: G03G21/1647 , F16H1/20 , G03G2215/0177
Abstract: An elastic force of an elastic member 11 required for rotating a driven rotational body 8b is decreased.A first rotational body 8d and a second rotational body 9a arranged downstream of a driven rotational body 8b in a drive train that transmits a driving force from a driving rotational body 7 to a driven member 4 are included. The first rotational body 8d rotates in synchronization with the driven rotational body 8b. The second rotational body 9a is rotated by the first rotational body 8d and rotates the driven member 4. The first rotational body 8d rotates without rotating the second rotational body 9a when the driven rotational body 8b rotates by an elastic force of an elastic member 11.
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