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1. 发明授权

US10303090B2 Developing apparatus 有权
公开(公告)号：US10303090B2
公开(公告)日：2019-05-28
申请号：US15969937
申请日：2018-05-03
申请人： CANON KABUSHIKI KAISHA
发明人： Fumiyoshi Saito
IPC分类号： G03G15/08
摘要： A developing apparatus includes a partition member disposed in a first chamber above a discharge space communicated to the discharge port positioned downstream of a return conveyance portion in the first direction, and configured to divide a space within a first chamber in a gravity direction. The partition member is configured to extend from a wall portion on a downstream side of a developer container to a position corresponding to a downstream end of a return conveyance portion or to a position further upstream beyond the position corresponding to the downstream end of the return conveyance portion in the first direction. A surface, opposed to a first conveyance screw, of the partition member is positioned downward in the gravity direction than an upper end of a first communication port and upward in the gravity direction than the first conveyance screw.

2. 发明申请

US20170343925A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20170343925A1
公开(公告)日：2017-11-30
申请号：US15602269
申请日：2017-05-23
申请人： CANON KABUSHIKI KAISHA
发明人： Fumiyoshi Saito
IPC分类号： G03G15/08
CPC分类号： G03G15/0863 , G03G15/0849 , G03G15/0868 , G03G2215/0697
摘要： An image forming apparatus includes: an image bearing member; a developing device that develops an electrostatic latent image formed on the image bearing member; an attachment portion to which a developer supply container containing developer is attached; an information reading portion that reads information on the developer supply container stored in an information storage portion disposed in the developer supply container; a conveyance portion that communicates with a discharge port for discharging developer of the developer supply container and the developing device and conveys developer discharged from the developer supply container attached to the attachment portion to the developing device; a discharge mechanism that discharges developer from the developer supply container; and a controller that controls an operation of the discharge mechanism to reach a set discharged developer quantity using the information read by the information reading portion.

3. 发明申请

US20150248097A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20150248097A1
公开(公告)日：2015-09-03
申请号：US14630883
申请日：2015-02-25
申请人： CANON KABUSHIKI KAISHA
发明人： Katsuya Nose , Fumiyoshi Saito , Toshihisa Yago , Naoki Mugita
IPC分类号： G03G15/08
CPC分类号： G03G15/553 , G03G15/556
摘要： A controller for an image forming apparatus includes a difference calculating portion for calculating a difference between a consumption value depending on an amount of the toner consumed every predetermined unit and a reference value; and a difference integrating portion. When an integrated value of the difference is larger than a predetermined threshold, the controller executes an operation in a forced consumption mode so that the toner is consumed in an amount corresponding to a predetermined value obtained by multiplying the predetermined threshold by a coefficient of less than 1. When the operation is executed, the integrating portion sets, at a reset value, a value obtained by subtracting the predetermined value from the integrated value at that time. After the operation is executed, the controller executes the operation every time when an integrated value obtained by integrating the reset value and the difference is larger than the predetermined threshold.
摘要翻译：一种用于图像形成装置的控制器包括差分计算部分，用于计算取决于每个预定单位消耗的调色剂量的消耗值与参考值之间的差; 和差积分部。当差的积分值大于预定阈值时，控制器执行强制消耗模式下的操作，使得调色剂以对应于通过将预定阈值乘以小于等于的系数而获得的预定值的量来消耗当执行操作时，积分部分以复位值设定通过从此时的积分值减去预定值而获得的值。在执行操作之后，当通过对复位值和差分进行积分而获得的积分值大于预定阈值时，控制器执行该操作。

4. 发明公开

US20230168599A1 DEVELOPING DEVICE 审中-公开
公开(公告)号：US20230168599A1
公开(公告)日：2023-06-01
申请号：US17989907
申请日：2022-11-18
申请人： CANON KABUSHIKI KAISHA
发明人： Osamu Ariizumi , Jun Shirayanagi , Fumiyoshi Saito
IPC分类号： G03G15/01
CPC分类号： G03G15/0173 , G03G2215/0177
摘要： A developing device includes a rotatable developing member, a developing container, a first communication opening, a second communication opening, a first feeding screw including a first rotation shaft, first and second blade portions, a second feeding screw including a second rotation shaft, third and fourth blade portions, a developer discharge opening provided upstream of an upstream end of the second communication opening in a first direction, and a third communication opening provided upstream of the upstream end of the second communication opening in the first direction. In a second direction opposite to the first direction, the third communication opening overlaps with the second blade portion. In the first direction, the third communication opening overlaps with the fourth blade portion. In the first direction, a downstream end of the third communication opening is positioned downstream of a downstream end of the developer discharge opening.

5. 发明申请

US20180341196A1 DEVELOPING APPARATUS 审中-公开
公开(公告)号：US20180341196A1
公开(公告)日：2018-11-29
申请号：US15969937
申请日：2018-05-03
申请人： CANON KABUSHIKI KAISHA
发明人： Fumiyoshi Saito
IPC分类号： G03G15/08
CPC分类号： G03G15/0891 , G03G15/0865 , G03G2215/0802
摘要： A developing apparatus includes a partition member disposed in a first chamber above a discharge space communicated to the discharge port positioned downstream of a return conveyance portion in the first direction, and configured to divide a space within a first chamber in a gravity direction. The partition member is configured to extend from a wall portion on a downstream side of a developer container to a position corresponding to a downstream end of a return conveyance portion or to a position further upstream beyond the position corresponding to the downstream end of the return conveyance portion in the first direction. A surface, opposed to a first conveyance screw, of the partition member is positioned downward in the gravity direction than an upper end of a first communication port and upward in the gravity direction than the first conveyance screw.

6. 发明授权

US09804527B2 Sealing apparatus for developing device 有权
公开(公告)号：US09804527B2
公开(公告)日：2017-10-31
申请号：US15003049
申请日：2016-01-21
申请人： CANON KABUSHIKI KAISHA
发明人： Katsuya Nose , Fumiyoshi Saito
IPC分类号： G03G15/08
CPC分类号： G03G15/0886 , G03G15/0884 , G03G15/0893
摘要： In a developing device in which initial developer is sealed in and a developer discharge mechanism (a trickle mechanism, or an ACR mechanism) is provided, the driving-torque load generated in the developing device is suppressed, regardless of the state of distribution of the developer that is sealed in the developing device.The order of releasing seals provided over openings is defined as follows. First, a seal provided on the downstream side of a stirring chamber starts to be released. Then, a seal provided over a discharge port is released. Lastly, a seal provided on the upstream side of the stirring chamber starts to be released.

7. 发明授权

US09557683B2 Image forming apparatus with forced supply mode for forcedly supplying toner 有权
标题翻译：具有强制供应模式的图像形成设备，用于强制供应墨粉
公开(公告)号：US09557683B2
公开(公告)日：2017-01-31
申请号：US14953625
申请日：2015-11-30
申请人： CANON KABUSHIKI KAISHA
发明人： Fumiyoshi Saito , Katsuya Nose , Toshihisa Yago , Naoki Mugita
IPC分类号： G03G15/08
CPC分类号： G03G15/0853 , G03G15/0822 , G03G15/0855 , G03G15/0856 , G03G15/0863 , G03G15/0877
摘要： An image forming apparatus includes an image bearing member, a developing device, a supplying device, and a controller. The controller can execute a normal supply mode and a forced supply mode on the basis of a difference between a toner supply amount in the normal supply mode and a supply amount of the toner to be supplied to the developing device. In a case where the flag is set when a predetermined time is elapsed after the difference exceeds the predetermined threshold, image formation is effected and then interrupted, and then the controller executes the operation in the forced supply mode, and in a case where the flag is reset when the predetermined time is elapsed after the difference exceeds the predetermined threshold, the image formation is effected and then said controller continues an image forming operation without executing the operation in the forced supply mode.
摘要翻译：图像形成装置包括图像承载部件，显影装置，供给装置和控制器。控制器可以基于正常供应模式中的调色剂供应量与要供应到显影装置的调色剂的供给量之间的差异来执行正常供应模式和强制供给模式。在差异超过预定阈值之后经过了预定时间时设定标志的情况下，进行图像形成然后中断，然后控制器执行强制供给模式中的操作，并且在标志在差异超过预定阈值之后经过预定时间时进行复位，进行图像形成，然后所述控制器继续进行图像形成操作而不执行强制供给模式中的操作。

8. 发明授权

US09377740B2 Image forming apparatus supplying toner based on toner density of developer contained in containing unit and method for controlling image forming apparatus 有权
标题翻译：基于包含在容纳单元中的显影剂的调色剂浓度供应调色剂的图像形成设备和用于控制成像设备的方法
公开(公告)号：US09377740B2
公开(公告)日：2016-06-28
申请号：US14566617
申请日：2014-12-10
申请人： CANON KABUSHIKI KAISHA
发明人： Fumiyoshi Saito , Yusuke Ishida , Naoki Mugita , Katsuya Nose , Toshihisa Yago , Kosuke Takeuchi
IPC分类号： G03G15/08 , G03G15/00
CPC分类号： G03G15/556 , G03G15/0853 , G03G15/0877 , G03G2215/00029
摘要： An image forming apparatus includes an image forming unit including a containing unit that contains a developer including toner and forms an image based on image data by using the toner, a supply unit that supplies the toner into the containing unit, a consumption amount calculation unit that calculates, based on information related to a density of an image corresponding to the image data, a consumption amount in the containing unit, a detection unit that detects a toner density of the developer in the containing unit, a correction amount calculation unit that calculates, based on the information and the toner density detected by the detection unit, a correction amount by which the consumption amount is corrected, and a controller that controls the supply unit based on the consumption amount and the correction amount calculated by the correction amount calculation unit.
摘要翻译：图像形成装置包括图像形成单元，该图像形成单元包括容纳单元，该容纳单元包含包含调色剂的显影剂，并且通过使用调色剂基于图像数据形成图像;供应单元，其将调色剂供应到所述容纳单元中;消耗量计算单元，基于与所述图像数据对应的图像的浓度相关的信息，计算所述容纳单元中的消耗量，检测所述容纳单元中的显影剂的调色剂浓度的检测单元，校正量计算单元，基于由检测单元检测到的信息和调色剂浓度，校正消耗量的校正量，以及基于由校正量计算单元计算出的消耗量和校正量来控制供给单元的控制器。

9. 发明申请

US20160170357A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20160170357A1
公开(公告)日：2016-06-16
申请号：US14953639
申请日：2015-11-30
申请人： CANON KABUSHIKI KAISHA
发明人： Fumiyoshi Saito , Katsuya Nose , Toshihisa Yago , Naoki Mugita
IPC分类号： G03G15/08
CPC分类号： G03G15/556 , G03G15/0844 , G03G15/09 , G03G2215/0607
摘要： An image forming apparatus includes: an image bearing member, a developing device, and a controller configured to execute an operation in a forced consumption mode. The controller includes a difference calculating portion, an integrating portion, and a flag. In a case where the flag is set when a predetermined time is elapsed after the integrated value exceeds the predetermined threshold, the image formation on the predetermined number of the recording materials is effected and then the controller executes the operation in the forced consumption mode, and in a case where the flag is reset when the predetermined time is elapsed after the integrated value exceeds the predetermined threshold, the image formation on the predetermined number of the recording materials is effected and then the controller continues an image forming operation without executing the operation in the forced consumption mode.
摘要翻译：图像形成装置包括：图像承载部件，显影装置和被配置为执行强制消费模式下的操作的控制器。控制器包括差分计算部分，积分部分和标志。在积分值超过预定阈值之后经过预定时间后设定标志的情况下，进行预定数量的记录材料上的图像形成，然后控制器执行强制消费模式下的操作，在积分值超过预定阈值之后经过预定时间时标志被复位的情况下，进行预定数量的记录材料上的图像形成，然后控制器继续进行图像形成操作，而不执行操作强制消费模式。

10. 发明申请

US20180335722A1 DEVELOPING DEVICE 审中-公开
公开(公告)号：US20180335722A1
公开(公告)日：2018-11-22
申请号：US15982023
申请日：2018-05-17
申请人： CANON KABUSHIKI KAISHA
发明人： Osamu Ariizumi , Shunsuke Tsuda , Mitsuyoshi Arakawa , Masahiro Ootsuka , Fumiyoshi Saito
IPC分类号： G03G15/08
CPC分类号： G03G15/0893 , G03G2215/083 , G03G2215/0833
摘要： A developing device includes a developer carrying member, a first chamber, a second chamber, a first communicating portion, a second communicating portion, and a feeding screw, provided in the second chamber, including a feeding portion having a first helical blade and including a returning portion having a second helical blade in the form of a plurality of threads, the feeding portion and the returning portion being provided so that a boundary portion therebetween opposes the second communicating portion. The first helical blade and the second helical blade satisfy the following relationship: P2≥P1, where P1 is a pitch of the first helical blade and P2 is a pitch of the second helical blade.

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