公开(公告)号：US11703783B2

公开(公告)日：2023-07-18

申请号：US17842794

申请日：2022-06-17

申请人： Ryohhei Sugiyama

发明人： Ryohhei Sugiyama

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064 ,  G03G2215/2032

摘要： A fixing device includes a fixing belt that is endless and rotatable. A nip formation pad is disposed opposite an inner circumferential face of the fixing belt via a lubricant. A pressure roller sandwiches the fixing belt together with the nip formation pad to form a pressing region through which a recording medium is conveyed. A cap is disposed opposite a lateral end of the fixing belt in an axial direction of the fixing belt. A seal is tubular and contacts an outer circumferential face of the fixing belt in at least a part of an inner circumferential face of the seal. The seal seals a gap between the cap and the fixing belt. The seal includes a non-perpendicular portion that is not perpendicular to a circumferential direction of the fixing belt and defines a slit.

公开(公告)号：US10401766B2

公开(公告)日：2019-09-03

申请号：US15293881

申请日：2016-10-14

申请人： Ryohhei Sugiyama ,  Hiroshi Ono ,  Hironori Yamaoka ,  Motoyoshi Yamano ,  Yoshikuni Sasaki ,  Tetsuo Tokuda

发明人： Ryohhei Sugiyama ,  Hiroshi Ono ,  Hironori Yamaoka ,  Motoyoshi Yamano ,  Yoshikuni Sasaki ,  Tetsuo Tokuda

IPC分类号： G03G15/20

摘要： An image forming apparatus includes a fixing rotator rotatable in a predetermined direction of rotation, over which a recording medium is conveyed, and a heater to heat the fixing rotator. A temperature detector detects a temperature of the fixing rotator. A controller performs a primary productivity control to define a primary productivity rate of printing per unit time based on the temperature of the fixing rotator that is detected by the temperature detector. The controller calculates an amount of power suppliable to the heater and performs a secondary productivity control simultaneously with and separately from the primary productivity control. The secondary productivity control defines a secondary productivity rate of printing per unit time based on the amount of power suppliable to the heater. The controller selects one of the primary productivity rate and the secondary productivity rate whichever is lower as a productivity rate of the image forming apparatus.

公开(公告)号：US12124194B2

公开(公告)日：2024-10-22

申请号：US18176845

申请日：2023-03-01

申请人： Ryohhei Sugiyama ,  Takayuki Andoh ,  Masahiro Samei ,  Kota Shiodera ,  Hiroshi Yoshinaga

发明人： Ryohhei Sugiyama ,  Takayuki Andoh ,  Masahiro Samei ,  Kota Shiodera ,  Hiroshi Yoshinaga

IPC分类号： G03G15/20

CPC分类号： G03G15/2007 ,  G03G15/2053

摘要： A heating device includes a rotator, a heating source, a reflector, a rotator holder, and a liquid or semi-solid substance. The rotator is rotatably held. The heating source heats the rotator. The reflector includes a reflection face that reflects radiant heat emitted from the heating source. The reflection face has a reflectance lower at each end portion of the reflection face in a longitudinal direction of the rotator than at a center portion of the reflection face in the longitudinal direction of the rotator. The rotator holder holds a longitudinal end portion of the rotator. The liquid or semi-solid substance has lubricity and adheres to the rotator holder.

公开(公告)号：US20230305451A1

公开(公告)日：2023-09-28

申请号：US18176845

申请日：2023-03-01

申请人： Ryohhei Sugiyama ,  Takayuki Andoh ,  Masahiro Samei ,  Kota Shiodera ,  Hiroshi Yoshinaga

发明人： Ryohhei Sugiyama ,  Takayuki Andoh ,  Masahiro Samei ,  Kota Shiodera ,  Hiroshi Yoshinaga

IPC分类号： G03G15/20

CPC分类号： G03G15/2007

摘要： A heating device includes a rotator, a heating source, a reflector, a rotator holder, and a liquid or semi-solid substance. The rotator is rotatably held. The heating source heats the rotator. The reflector includes a reflection face that reflects radiant heat emitted from the heating source. The reflection face has a reflectance lower at each end portion of the reflection face in a longitudinal direction of the rotator than at a center portion of the reflection face in the longitudinal direction of the rotator. The rotator holder holds a longitudinal end portion of the rotator. The liquid or semi-solid substance has lubricity and adheres to the rotator holder.

公开(公告)号：US20230063831A1

公开(公告)日：2023-03-02

申请号：US17842794

申请日：2022-06-17

申请人： Ryohhei SUGIYAMA

发明人： Ryohhei SUGIYAMA

IPC分类号： G03G15/20

摘要： A fixing device includes a fixing belt that is endless and rotatable. A nip formation pad is disposed opposite an inner circumferential face of the fixing belt via a lubricant. A pressure roller sandwiches the fixing belt together with the nip formation pad to form a pressing region through which a recording medium is conveyed. A cap is disposed opposite a lateral end of the fixing belt in an axial direction of the fixing belt. A seal is tubular and contacts an outer circumferential face of the fixing belt in at least a part of an inner circumferential face of the seal. The seal seals a gap between the cap and the fixing belt. The seal includes a non-perpendicular portion that is not perpendicular to a circumferential direction of the fixing belt and defines a slit.

公开(公告)号：US09696672B2

公开(公告)日：2017-07-04

申请号：US15132401

申请日：2016-04-19

申请人： Hiroshi Ono ,  Tetsuo Tokuda ,  Yoshikuni Sasaki ,  Hironori Yamaoka ,  Ryohhei Sugiyama ,  Yamano Motoyoshi

发明人： Hiroshi Ono ,  Tetsuo Tokuda ,  Yoshikuni Sasaki ,  Hironori Yamaoka ,  Ryohhei Sugiyama ,  Yamano Motoyoshi

IPC分类号： G03G15/20 ,  G03G21/16 ,  F16H25/14 ,  F16H37/12

CPC分类号： G03G15/2064 ,  F16H25/14 ,  F16H37/12 ,  G03G15/2025 ,  G03G21/1647 ,  G03G2215/0129 ,  G03G2215/2032

摘要： A drive transmission unit transmits driving force to a driven unit including a driven rotator coupled to the drive transmission unit via a unit coupler. The drive transmission unit includes a driving source, a drive transmission member to transmit driving force from the driving source to the driven rotator by engaging the driven rotator, and a basal plate with a turning shaft portion at one end thereof. The basal plate supports the driving source and the drive transmission member thereon. The drive transmission unit is turned around the turning shaft portion together with the driven unit in a direction substantially orthogonal to a direction of a driving reaction force applied to the drive transmission member when the driven rotator receives the driving force from the drive transmission member.

公开(公告)号：US20170146933A1

公开(公告)日：2017-05-25

申请号：US15352782

申请日：2016-11-16

申请人： Motoyoshi YAMANO ,  Tetsuo TOKUDA ,  Yoshikuni SASAKI ,  Hiroshi ONO ,  Hironori YAMAOKA ,  Ryohhei SUGIYAMA ,  Kohichi UTSUNOMIYA ,  Arinobu YOSHIURA ,  Hideo NAGAFUJI

发明人： Motoyoshi YAMANO ,  Tetsuo TOKUDA ,  Yoshikuni SASAKI ,  Hiroshi ONO ,  Hironori YAMAOKA ,  Ryohhei SUGIYAMA ,  Kohichi UTSUNOMIYA ,  Arinobu YOSHIURA ,  Hideo NAGAFUJI

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G15/2032 ,  G03G15/2064

摘要： A fixing device includes a heater, a fixing rotator, a pressure rotator to press against the fixing rotator to form a fixing nip between the fixing rotator and the pressure rotator, through which a recording medium is conveyed, a moving device to move the pressure rotator in directions in which the pressure rotator comes into contact with and separates from the fixing rotator, a thermal expansion amount predictor to predict an amount of thermal expansion of the fixing rotator while the recording medium is conveyed, and a nip width adjuster to control a moving distance of the pressure rotator moved by the moving device toward the fixing rotator, depending on the amount of thermal expansion of the fixing rotator predicted by the thermal expansion amount predictor, so as to adjust a width of the fixing nip to maintain a substantially constant width of the fixing nip.