-
公开(公告)号：US20220066354A1
公开(公告)日：2022-03-03
申请号：US17351499
申请日：2021-06-18
Applicant: Brother Kogyo Kabushiki Kaisha
Inventor： Yusuke IKEGAMI , Shintaro Sakaguchi , Kotaro Haruta , Yuwen Wang
Abstract: An image forming apparatus includes a housing having an opening, a cover configured to openably close the opening, photosensitive drums, cartridges, a first motor and a controller. Each cartridge has a developing roller, a storage chamber configured to store toner, and an agitator configured to agitate the toner. The first motor is configured to rotate the agitators. The controller rotates the agitators by rotating the first motor when forming an image on a sheet. The controller determines whether a new cartridge is included in the plurality of cartridges in response to the image forming apparatus being turned on or in response to the cover being closed. In a case where a new cartridge is included, the controller stirs toner with the agitators by rotating the first motor. In a case where a new cartridge is not included, the controller does not stir the toner.
-
公开(公告)号：US11226578B2
公开(公告)日：2022-01-18
申请号：US17030722
申请日：2020-09-24
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Kotaro Haruta , Hiroshi Nakano
Abstract: An image forming apparatus includes: a first gear train including a first clutch; a second gear train including a second clutch; a third gear train including a third clutch; a fourth gear train including a fourth clutch; a motor including an output shaft; an output gear rotatable with the output shaft; a fifth gear train connected to the first and second clutches; and a sixth gear train connected to the third and fourth clutches. The first clutch engages transmission of a driving force to a first developing unit, the second clutch engages transmission of a driving force to a second developing unit, the third clutch engages transmission of a driving force to a third developing unit, and the fourth clutch engages transmission of a driving force to a fourth developing unit. The fifth and sixth gear trains are connected to the output gear independently from each other.
-
公开(公告)号：US10921748B2
公开(公告)日：2021-02-16
申请号：US16715968
申请日：2019-12-16
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Kotaro Haruta , Masahito Saeki , Shoichiro Nishimura , Tomonori Watanabe
Abstract: An image forming apparatus, having a photosensitive drum, a developing roller movable between a contacting position, in which the developing roller contacts the photosensitive drum, and a separated position, in which the developing roller is separated from the photosensitive drum, a moving mechanism to move the developing roller between the contacting position and the separated position, a fuser including a heating member and a pressing member to nip a sheet at a position between the heating member and the pressing member, a nipping-force adjuster to switch a nipping force in the fuser between a first nipping force and a second nipping force being greater than the first nipping force, a motor, and a driving-force transmitter to transmit a driving force from the motor to the developing roller, is provided. The driving-force transmitter transmits the driving force further to the moving mechanism and the nipping-force adjuster.
-
公开(公告)号：US11556089B2
公开(公告)日：2023-01-17
申请号：US17176522
申请日：2021-02-16
Applicant: Brother Kogyo Kabushiki Kaisha
Inventor： Hiroshi Nakano , Masahito Saeki , Kotaro Haruta
Abstract: An image forming apparatus, having a first photosensitive drum, a first developing roller, a first shifting member movable between a contacting position and a separating position, a motor, a first joint, a first clutch operable in one of a transmittable condition and a discontinuing condition, a first shifting cam rotatable between a first position, in which the first shifting cam locates the first shifting member at the contacting position, and a second position, in which the first shifting cam locates the first shifting member at the separating position, and a first switching cam rotatable between a third position, in which the first switching cam places the first clutch in the transmittable condition, and a fourth position, in which the first switching cam places the first clutch in the discontinuing condition, alongside the first shifting cam rotating between the first position and the second position, is provided.
-
公开(公告)号：US11500302B2
公开(公告)日：2022-11-15
申请号：US17192414
申请日：2021-03-04
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Sota Yanagihara , Yusuke Ikegami , Kotaro Haruta , Shoichiro Nishimura
IPC: G03G15/043 , G03G15/04 , G03G21/18
Abstract: An image forming apparatus includes a photoconductive body, a light source, a deflector to deflect a light beam from the light source, a scanning optical system to image the deflected light beam onto the photoconductive body, a developing unit to supply developer to the photoconductive body, an optical sensor to detect the deflected light beam, a moving mechanism to move the developing unit to a first position and to a second position, and a controller configured to start driving the deflector, when the developing unit is in the second position, the light source to emit the light beam, thereby obtaining a detection signal of the light beam from the optical sensor, and after obtaining the detection signal of the light beam from the optical sensor, control the moving mechanism to move the developing unit to the first position.
-
Patent Agency Ranking
公开(公告)号：US11209744B2
公开(公告)日：2021-12-28
申请号：US17104394
申请日：2020-11-25
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Masahito Saeki , Toshiyuki Sano , Shintaro Sakaguchi , Kotaro Haruta , Shoichiro Nishimura
Abstract: An image forming apparatus, having first, second, and third photosensitive drums, a first developing cartridge including a first developing roller, a second developing cartridge including a second developing roller, a third developing cartridge including a third developing roller, an exposure device, a conveyer, and a moving mechanism, is provided. The first developing roller, the second developing roller, and the third developing roller are arranged in the recited order from upstream to downstream in a moving direction for the sheet to be conveyed. When the second developing roller is at the separated position thereof, the second developing cartridge coincides with a light path of the laser beam for scanning the first photosensitive drum. When the third developing roller is at the separated position thereof, the third developing cartridge coincides with a light path of the laser beam for scanning the second photosensitive drum.
-
公开(公告)号：US20200004198A1
公开(公告)日：2020-01-02
申请号：US16456366
申请日：2019-06-28
Applicant: Brother Kogyo Kabushiki Kaisha
Inventor： Hiroshi Nakano , Masahito Saeki , Kotaro Haruta
Abstract: An image forming apparatus, having a first photosensitive drum, a first developing roller, a first shifting member movable between a contacting position and a separating position, a motor, a first joint, a first clutch operable in one of a transmittable condition and a discontinuing condition, a first shifting cam rotatable between a first position, in which the first shifting cam locates the first shifting member at the contacting position, and a second position, in which the first shifting cam locates the first shifting member at the separating position, and a first switching cam rotatable between a third position, in which the first switching cam places the first clutch in the transmittable condition, and a fourth position, in which the first switching cam places the first clutch in the discontinuing condition, alongside the first shifting cam rotating between the first position and the second position, is provided.
-
8.发明授权Heating roller, thermal fixing apparatus and method for producing heating roller 有权加热辊，热定影装置和加热辊的制造方法公开(公告)号：US09414440B2
公开(公告)日：2016-08-09
申请号：US14547797
申请日：2014-11-19
Applicant: Brother Kogyo Kabushiki Kaisha
Inventor： Kotaro Haruta , Takuji Matsuno
CPC classification number: H05B3/0095 , G03G15/2057
Abstract: A heating roller includes: a core bar having a cylindrical shape; a rubber layer arranged on an outer circumferential surface of the core bar; and a release layer arranged on an outer circumferential surface of the rubber layer, wherein when thermally fixing a developer on a recording medium, the heating roller is heated to a temperature within a fixing temperature range including a minute particle-scattering start temperature at which minute particles start to scatter from the rubber layer. The heating roller is arranged inside a casing which is connected to a minute particle density measuring device; then the core bar of the heating roller inside the casing is heated to 230° C. by a heater; and when the density of the minute particles inside the casing is measured after elapse of 20 minutes since start of the heating, the density of the minute particles is less than 2,000 pieces/cm3.
Abstract translation: 加热辊包括：具有圆柱形状的芯棒; 布置在所述芯棒的外周表面上的橡胶层; 以及布置在所述橡胶层的外周表面上的释放层，其中当将记录介质上的显影剂热固定时，将所述加热辊加热到包括微小粒子散射开始温度的定影温度范围内的温度，在该定影温度范围内， 颗粒开始从橡胶层散射。 加热辊布置在与微粒密度测量装置连接的壳体内; 然后通过加热器将壳体内的加热辊的芯棒加热至230℃; 并且当从加热开始20分钟后测量壳体内的微小颗粒的密度时，微小颗粒的密度小于2,000个/ cm3。
-
公开(公告)号：US20230070918A1
公开(公告)日：2023-03-09
申请号：US18052648
申请日：2022-11-04
Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Inventor： Sota Yanagihara , Yusuke Ikegami , Kotaro Haruta , Shoichiro Nishimura
IPC: G03G15/043 , G03G15/04 , G03G21/18
Abstract: An image forming apparatus includes a photoconductive body, a light source, a deflector to deflect a light beam from the light source, a scanning optical system to image the deflected light beam onto the photoconductive body, a developing unit to supply developer to the photoconductive body, an optical sensor to detect the deflected light beam, a moving mechanism to move the developing unit to a first position and to a second position, and a controller configured to start driving the deflector, when the developing unit is in the second position, the light source to emit the light beam, thereby obtaining a detection signal of the light beam from the optical sensor, and after obtaining the detection signal of the light beam from the optical sensor, control the moving mechanism to move the developing unit to the first position.
-
公开(公告)号：US10955791B2
公开(公告)日：2021-03-23
申请号：US16456366
申请日：2019-06-28
Applicant: Brother Kogyo Kabushiki Kaisha
Inventor： Hiroshi Nakano , Masahito Saeki , Kotaro Haruta
Abstract: An image forming apparatus, having a first photosensitive drum, a first developing roller, a first shifting member movable between a contacting position and a separating position, a motor, a first joint, a first clutch operable in one of a transmittable condition and a discontinuing condition, a first shifting cam rotatable between a first position, in which the first shifting cam locates the first shifting member at the contacting position, and a second position, in which the first shifting cam locates the first shifting member at the separating position, and a first switching cam rotatable between a third position, in which the first switching cam places the first clutch in the transmittable condition, and a fourth position, in which the first switching cam places the first clutch in the discontinuing condition, alongside the first shifting cam rotating between the first position and the second position, is provided.
-
-
-
-
-
-
-
-
-
Search Results
25
records
(took 0.024 seconds)
