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51. 发明申请

US20210382430A1 IMAGE FORMING APPARATUS 有权
公开(公告)号：US20210382430A1
公开(公告)日：2021-12-09
申请号：US17335158
申请日：2021-06-01
申请人： CANON KABUSHIKI KAISHA
发明人： Kazuhiro Funatani , Shinsuke Kobayashi , Kensuke Umeda , Takanori Watanabe , Ai Suzuki
IPC分类号： G03G21/00 , G03G21/10 , G03G15/02 , G03G15/08 , G03G15/01
摘要： Provided are an image bearing member; a charging member that charges the image bearing member; an exposure unit that exposes the image bearing member; a developing unit that develops an electrostatic latent image as a developer image by supplying a developer, charged to regular polarity, to the image bearing member; a transfer member that transfers the developer image to a transfer-receiving body; and a collecting member that collects a deposit on the image bearing member downstream of a transfer portion of the image bearing member at which the developer image is transferred to the transfer-receiving body by the transfer member, and upstream of a charging portion of the image bearing member charged by the charging member, in a rotation direction of the image bearing member. After transfer of the developer image to the transfer-receiving body, the developer remaining on the image bearing member is collected by the developing unit.

52. 发明授权

US10444673B2 Guide member and image forming apparatus comprising the same 有权
公开(公告)号：US10444673B2
公开(公告)日：2019-10-15
申请号：US16191274
申请日：2018-11-14
申请人： CANON KABUSHIKI KAISHA
发明人： Kenji Shindo , Shinsuke Kobayashi , Takaaki Akamatsu , Kohei Okayasu , Takehiko Suzuki
IPC分类号： G03G15/16 , G03G15/00
摘要： There is provided an image forming apparatus including a configuration in which a voltage of a polarity opposite to a toner charging polarity is applied. In the image forming apparatus, a guide region of a pre-transfer guide is located on a photosensitive drum side with respect to a common tangent line of a photosensitive drum and a development roller to reduce contamination of the pre-transfer guide and prevent contamination of recording materials.

53. 发明申请

US20190079434A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20190079434A1
公开(公告)日：2019-03-14
申请号：US16191274
申请日：2018-11-14
申请人： CANON KABUSHIKI KAISHA
发明人： Kenji Shindo , Shinsuke Kobayashi , Takaaki Akamatsu , Kohei Okayasu , Takehiko Suzuki
IPC分类号： G03G15/16 , G03G15/00
摘要： There is provided an image forming apparatus including a configuration in which a voltage of a polarity opposite to a toner charging polarity is applied. In the image forming apparatus, a guide region of a pre-transfer guide is located on a photosensitive drum side with respect to a common tangent line of a photosensitive drum and a development roller to reduce contamination of the pre-transfer guide and prevent contamination of recording materials.

54. 发明授权

US10073383B2 Image forming apparatus including cleaning operation 有权
公开(公告)号：US10073383B2
公开(公告)日：2018-09-11
申请号：US15285592
申请日：2016-10-05
申请人： CANON KABUSHIKI KAISHA
发明人： Shinsuke Kobayashi , Takaaki Akamatsu , Kenji Shindo , Kohei Okayasu , Hiroki Sasame
IPC分类号： G03G15/16 , G03G21/00 , G03G21/06 , G03G21/08
摘要： An image forming apparatus includes a discharging device for discharging the drum at a discharging portion opposing the surface of the drum; and a control unit for executing, during non-image formation, a cleaning operation for transferring the toner deposited on the transfer member onto the drum by applying a voltage from transfer voltage source to the transfer member. The control unit does not effect discharge by the discharging device for at least a region of the drum where a transfer voltage for transferring a normal-polarity toner of the toner deposited on the transfer member onto the drum is applied to the transfer member in the cleaning operation, and then passes the region of the drum through the charging portion in a state in which a voltage larger than a surface potential of the drum in a normal polarity side is applied to the charging member.

55. 发明授权

US09946216B2 Image forming apparatus 有权
公开(公告)号：US09946216B2
公开(公告)日：2018-04-17
申请号：US15298546
申请日：2016-10-20
申请人： CANON KABUSHIKI KAISHA
发明人： Kohei Okayasu , Shinsuke Kobayashi , Takaaki Akamatsu , Kenji Shindo , Hiroki Sasame , Takuya Hayato
IPC分类号： G03G21/00
CPC分类号： G03G21/00 , G03G15/0225 , G03G15/5029 , G03G21/0064
摘要： An image forming apparatus includes an image bearing member; a developing device; a transfer member; a contact member provided downstream of the transfer member and upstream of the developing device with respect to a movement direction of a surface of the image bearing member and contacting the image bearing member at a contact portion, wherein the surface of the image bearing member passed through a transfer portion reaches the contact portion without being cleaned, a detecting portion for detecting a size of the sheet; and a controller for executing an operation in a cleaning mode for cleaning the contact member. The controller executes the operation in the cleaning mode when the controller discriminates that the size of the sheet detected by the detecting portion is smaller than a size of the toner image.

56. 发明授权

US09400447B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US09400447B2
公开(公告)日：2016-07-26
申请号：US14885367
申请日：2015-10-16
申请人： CANON KABUSHIKI KAISHA
发明人： Shinsuke Kobayashi
IPC分类号： G03G15/08 , G03G15/06
CPC分类号： G03G15/065 , G03G15/0178 , G03G15/0266 , G03G15/1675
摘要： An image forming apparatus includes a first power source configured to supply charging voltage to a first charging unit, and a second power source configured to supply predetermined voltage to at least one of a second charging unit, a second developing member, and a second transfer unit. The first and the second power sources are grounded via a common resistor component. When the second power source in a state of supplying no voltage or supplying voltage lower than the predetermined voltage at a first timing starts supplying the predetermined voltage while the first power source is supplying the charging voltage, a control unit causes a separating mechanism to move a first developing member to a separation position before a second timing at which an area of a first photosensitive member that is at a charging position at the first timing reaches a developing position.
摘要翻译：图像形成装置包括被配置为向第一充电单元提供充电电压的第一电源和被配置为向第二充电单元，第二显影构件和第二转印单元中的至少一个提供预定电压的第二电源。第一和第二电源通过公共电阻器组件接地。当在第一定时不提供电压或低于预定电压的电压的第二电源在第一电源提供充电电压时开始供应预定电压，控制单元使分离机构移动在第一定时处于充电位置的第一感光构件的区域到达显影位置的第二定时之前的第一显影构件到达分离位置。

57. 发明申请

US20150071687A1 IMAGE FORMING APPARATUS, POSITIONAL DEVIATION DETECTION APPARATUS, AND POSITIONAL DEVIATION DETECTION METHOD 有权
标题翻译：图像形成装置，位置偏差检测装置和位置偏差检测方法
公开(公告)号：US20150071687A1
公开(公告)日：2015-03-12
申请号：US14480428
申请日：2014-09-08
申请人： CANON KABUSHIKI KAISHA
发明人： Keisuke Ishizumi , Ken Nakagawa , Shinsuke Kobayashi
IPC分类号： G03G15/01
CPC分类号： G03G15/0121 , G03G15/0126 , G03G15/5058 , G03G2215/0187 , G03G2215/0648
摘要： An image forming apparatus includes a first detection unit including a first light receiving element arranged in a direction of normal reflected light reflected from a first positional deviation correction pattern, a second detection unit including a second light receiving element arranged in a different direction of normal reflected light reflected from a second positional deviation correction pattern, and a control unit configured to correct a positional deviation based on a value calculated from a first detection result detected by the first detection unit and a second detection result detected by the second detection unit.
摘要翻译：一种图像形成装置包括：第一检测单元，包括沿从第一位置偏差校正图案反射的法线反射光的方向布置的第一光接收元件;第二检测单元，包括沿正常反射的不同方向排列的第二光接收元件从第二位置偏差校正图案反射的光，以及控制单元，被配置为基于从由第一检测单元检测到的第一检测结果计算的值和由第二检测单元检测到的第二检测结果来校正位置偏差。

58. 发明申请

US20150063834A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20150063834A1
公开(公告)日：2015-03-05
申请号：US14475259
申请日：2014-09-02
申请人： CANON KABUSHIKI KAISHA
发明人： Shinsuke Kobayashi , Ken Nakagawa , Akihiko Uchiyama , Tomonori Shida , Kazuhiro Funatani , Hiroshi Kita
IPC分类号： G03G15/00 , G03G21/18
CPC分类号： G03G21/1817 , G03G15/043 , G03G21/1821 , G03G21/1825 , G03G21/1828 , G03G2221/1684 , G03G2221/1869
摘要： An image forming apparatus includes a mounting portion to and from which a process cartridge including a photosensitive member and a developing roller is attachable and detachable, a separation mechanism that takes a first position to separate the developing roller from the photosensitive member and a second position to bring the developing roller into contact with the photosensitive member, an allowance mechanism that allows the process cartridge with the developing roller kept in contact with the photosensitive member to be mounted on the mounting portion when the separation mechanism is in the first position, an exposure device, and a control unit, wherein, when the developing roller and the photosensitive member are in contact with each other when the separation mechanism is in the first position, the control unit performs an exposure operation while keeping the separation mechanism in the first position during an initial operation of the image forming apparatus.
摘要翻译：图像形成装置包括：安装部分，其中包括感光构件和显影辊的处理盒可从该安装部分附接和拆卸;分离机构，其将第一位置从显影辊与感光构件分离;第二位置，使显影辊与感光构件接触，允许在分离机构处于第一位置时使显影辊与感光构件保持接触的处理盒安装在安装部上的允许机构，曝光装置以及控制单元，其中，当所述分离机构处于所述第一位置时，当所述显影辊和所述感光构件彼此接触时，所述控制单元进行曝光操作，同时在所述分离机构保持所述第一位置的同时保持所述分离机构图像形成装置的初始操作。

59. 发明申请

US20150003853A1 IMAGE FORMING APPARATUS, DENSITY DETECTING APPARATUS, AND DENSITY DETECTING METHOD 有权
标题翻译：图像形成装置，密度检测装置和密度检测方法
公开(公告)号：US20150003853A1
公开(公告)日：2015-01-01
申请号：US14311702
申请日：2014-06-23
申请人： CANON KABUSHIKI KAISHA
发明人： Ken Nakagawa , Shinsuke Kobayashi , Keisuke Ishizumi
IPC分类号： G03G15/00
CPC分类号： G03G15/5058 , G03G2215/0132 , G03G2215/0164
摘要： Provided are a first detecting unit having a singular first light-receiving element disposed to face a direction of normal reflection of light, the light having been emitted from a first light-emitting element toward a first detection image formed on the rotary member and reflected thereat, and a second detecting unit having a singular second light-receiving element disposed to face a direction different from a direction of normal reflection of light, the light having been emitted from a second light-emitting element toward a second detection image formed on the rotary member and reflected thereat. A value relating to toner density is obtained based on a first detection result detected by the first detecting unit and a second detection result detected by the second detecting unit.
摘要翻译：提供一种第一检测单元，其具有设置成面向光的正常反射方向的单一的第一光接收元件，所述光从第一发光元件朝向形成在旋转构件上的第一检测图像发射并在其上反射以及第二检测单元，其具有设置成面向与光的正常反射方向不同的方向的单个第二光接收元件，所述光从第二发光元件发射到形成在旋转的第二检测图像上成员并反映在那里。基于由第一检测单元检测到的第一检测结果和由第二检测单元检测到的第二检测结果，获得与调色剂浓度相关的值。

60. 发明申请

US20140161494A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20140161494A1
公开(公告)日：2014-06-12
申请号：US14096518
申请日：2013-12-04
申请人： CANON KABUSHIKI KAISHA
发明人： Keisuke Ishizumi , Shinsuke Kobayashi , Ken Nakagawa
IPC分类号： G03G15/01
CPC分类号： G03G15/0189 , G03G15/5041 , G03G15/5058 , G03G2215/0161
摘要： Test patches are formed such that lengths of the test patches in a rotational direction of the intermediate transfer member are shorter than a length of the intermediate transfer member from a primary transfer portion located in the lowermost stream among the plurality of primary transfer portions to the secondary transfer portion.
摘要翻译：形成试验片，使得中间转印部件的旋转方向上的测试片的长度短于中间转印部件从位于多个一次转印部分中的最下部流中的一次转印部分到二次转印部分的长度转移部分。

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