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公开(公告)号：US12130584B2
公开(公告)日：2024-10-29
申请号：US18299428
申请日：2023-04-12
发明人： Hiroyuki Kadowaki
CPC分类号： G03G21/206 , G03G15/161 , G03G15/5045 , G03G15/5054 , G03G15/1675 , G03G15/5008 , G03G2215/00084 , G03G2221/1645
摘要： An image forming apparatus includes a forming unit, a transfer unit, a blowing unit, a temperature detection unit, and a control unit. The forming unit forms a toner image on a photosensitive member. The transfer unit transfers the formed toner image onto a recording material. The blowing unit takes outside air into the apparatus to generate an air flow for adjusting a temperature of the transfer unit. The temperature detection unit detects an ambient temperature outside the apparatus. The control unit controls driving of the blowing unit based on the detected ambient temperature. The control unit drives the blowing unit in a case where the detected ambient temperature is less than or equal to a first temperature threshold and a gradient value indicating a change in the detected ambient temperature is at least a first gradient threshold.
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公开(公告)号：US20240329583A1
公开(公告)日：2024-10-03
申请号：US18616031
申请日：2024-03-25
CPC分类号： G03G15/5041 , G03G15/0435 , G03G15/0856 , G03G15/0907 , G03G15/5045 , G06K15/14 , G06K15/1872
摘要： An image forming apparatus includes an image forming portion, an adjustment processing portion, an acquisition processing portion, and a setting processing portion. The image forming portion forms an image using toner. During execution of an image forming process using the image forming portion, the adjustment processing portion uses the toner to adjust the image quality of an output image output by the image forming process. The acquisition processing portion acquires variation amount information related to the amount of variation in a predetermined state value related to the image forming portion caused by a start of the image forming process. The setting processing portion sets the frequency of adjustment of the image quality of the output image by the adjustment processing portion, based on the variation amount information acquired by the acquisition processing portion.
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公开(公告)号：US20240319647A1
公开(公告)日：2024-09-26
申请号：US18599228
申请日：2024-03-08
申请人： Ryusuke MASE
发明人： Ryusuke MASE
IPC分类号： G03G15/00
CPC分类号： G03G15/5008 , G03G15/5045 , G03G15/505
摘要： An image forming apparatus includes an image bearer, a developing device, a motor, and circuitry. The developing device includes a screw and a developing roller. The screw stirs and conveys a developer. The developing roller bears the developer stirred and conveyed by the screw, brings the developer into contact with the image bearer, and develops an electrostatic latent image on the image bearer. The motor drives the developing device at multiple process speeds. The circuitry is configured to cause the motor to drive the screw and the developing roller before the developing roller starts developing the electrostatic latent image on the image bearer and adjust a drive time of the motor based on a process speed in a previous printing and a process speed in a next printing.
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公开(公告)号：US20240302773A1
公开(公告)日：2024-09-12
申请号：US18439784
申请日：2024-02-13
CPC分类号： G03G15/2053 , G03G15/2064 , G03G15/5045
摘要： A fixing device includes a fixing belt, a planar heater, a pressure rotator, a temperature sensor, and a plate. The pressure rotator presses the planar heater to form a nip through which a sheet is conveyed in a conveyance direction. The plate contacts the planar heater and includes a first portion and a second portion. The first portion has an opening and a projection. The temperature sensor contacts the planar heater through the opening to detect a temperature of the planar heater. The projection projects from the opening in the conveyance direction. The first portion has a first width in the conveyance direction. The second portion is inside a minimum sheet-passing region in an axial direction of the pressure rotator orthogonal to the conveyance direction and outside the first portion in the axial direction and has a second width smaller than the first width in the conveyance direction.
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公开(公告)号：US12019382B2
公开(公告)日：2024-06-25
申请号：US18223161
申请日：2023-07-18
发明人： Koji An , Shinji Katagiri
CPC分类号： G03G15/1675 , G03G15/04072 , G03G15/5045 , G03G2215/0404 , G03G2215/1614
摘要： An image forming apparatus includes an image bearing member, a transfer member, an acquiring portion, an applying portion, and a controller. When a transfer voltage is subjected to constant-voltage control so that the transfer voltage applied to the transfer member by the applying portion is substantially constant, in a case that the transfer voltage, when a toner amount used for a toner image is a first toner amount, is a first voltage, the controller controls the applying portion so that the transfer voltage is a second voltage lower in absolute value than the first voltage in a case that the toner amount is a second toner amount greater than the first toner amount. The acquiring portion acquires toner amount information on the toner amount for each toner image transferred onto a single recording material.
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公开(公告)号：US20240053696A1
公开(公告)日：2024-02-15
申请号：US18364608
申请日：2023-08-03
CPC分类号： G03G15/205 , G03G15/5045 , G03G15/2064 , G03G15/2035
摘要： An image forming apparatus includes an image forming portion, a fixing unit including a fixing member, a heating member, and a temperature detection portion, and a control portion configured to execute warm-up processing. If a temperature of the heating member at a first timing in a period of time in which the heating member is being heated in the warm-up processing is a first temperature, a temperature of the heating member at a second timing that is in the period of time and that is later than the first timing is a second temperature, and a temperature of the heating member at a timing different from the first timing and the second timing is a third temperature, the control portion is configured to change a fixing condition used in the job, based on the first temperature, the second temperature, and the third temperature.
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公开(公告)号：US11899385B2
公开(公告)日：2024-02-13
申请号：US17943102
申请日：2022-09-12
发明人： Yutaka Usami
CPC分类号： G03G15/2039 , G03G15/2053 , G03G15/2064 , G03G15/5004 , G03G15/5045 , H05B6/06 , G03G2215/2006
摘要： According to one embodiment, a temperature control device includes a temperature estimation unit and a frequency generation unit. The temperature estimation unit is configured to estimate a temperature of an object being heated by an induction heating coil, the temperature being estimated based on a frequency of a drive signal supplied to an inverter connected to the induction heating coil. The frequency generation unit is configured to set the frequency of the drive signal based on the temperature estimated by the temperature estimation unit, a detected temperature of the object from a temperature sensor, and a target temperature for the object.
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公开(公告)号：US20230305435A1
公开(公告)日：2023-09-28
申请号：US18295452
申请日：2023-04-04
发明人： Yusuke MIZUNO , Shintaro SAKAGUCHI
CPC分类号： G03G15/0868 , G03G15/5045 , G03G21/206
摘要： An image forming apparatus includes a main body housing, a first cartridge to store first developer, a second cartridge to store second developer, a first temperature sensor to detect an inside temperature as a temperature inside the main body housing, and a controller configured to calculate a first control temperature corresponding to the first cartridge, using the detected inside temperature and a first coefficient to be multiplied by the inside temperature, calculate a second control temperature corresponding to the second cartridge, using the detected inside temperature and a second coefficient to be multiplied by the inside temperature, the second coefficient being different from the first coefficient, and perform cooling control to cool an inside of the main body housing when at least one selected from the first control temperature and the second control temperature is higher than a particular threshold.
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公开(公告)号：US20180275577A1
公开(公告)日：2018-09-27
申请号：US15466045
申请日：2017-03-22
发明人： Kazuhiro Nishiwaki
CPC分类号： G03G15/5045 , G03G15/0266 , G03G15/2039 , G03G15/6529 , G03G2215/00084 , G03G2215/00371 , G03G2215/021
摘要： In accordance with an embodiment, an image forming apparatus comprises a housing, an image forming section, a temperature sensor, a determination section and a controller. The image forming section has a photoconductive drum and a charging roller for forming an image on a sheet which are arranged in the housing. The temperature sensor measures a temperature in the housing. The determination section determines whether or not the temperature meets a predetermined temperature. The controller carries out an image forming processing by controlling the image forming section if it is determined that a determination result by the determination section meets the predetermined temperature.
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公开(公告)号：US20180084125A1
公开(公告)日：2018-03-22
申请号：US15710586
申请日：2017-09-20
发明人： Tadashi Miyazaki
CPC分类号： H04N1/00814 , G03G15/2025 , G03G15/2039 , G03G15/205 , G03G15/2053 , G03G15/5004 , G03G15/5016 , G03G15/5045 , G03G15/6588 , G03G15/6591 , G03G15/6594 , G03G15/80 , G03G2215/00308 , G03G2215/00312 , G03G2215/00476 , G03G2215/00493 , G03G2215/00523 , G03G2215/00531 , H04N1/00005
摘要： In an image forming apparatus, a calculation processing portion includes an input portion and an input-portion abnormality determining portion. The input portion is connected to a temperature detection portion. When an abnormality detection circuit has detected that a temperature detected by the temperature detection portion is an abnormally heated temperature, the input-portion abnormality determining portion determines whether or not a first temperature calculated as a temperature of a fixing member is lower than a predetermined second temperature, and upon determining that the first temperature is lower than the second temperature, determines that the input portion is abnormal.
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