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1. 发明申请

US20170300000A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20170300000A1
公开(公告)日：2017-10-19
申请号：US15483548
申请日：2017-04-10
申请人： Keigo NAKAMURA , Hirokazu ISHll , Kenji SUGIURA. , Takehide MIZUTANI , Atsushi NAGATA , Naoto KOCHI , Yuuji WADA , Shinya TANAKA
发明人： Keigo NAKAMURA , Hirokazu ISHll , Kenji SUGIURA. , Takehide MIZUTANI , Atsushi NAGATA , Naoto KOCHI , Yuuji WADA , Shinya TANAKA
IPC分类号： G03G15/00 , G03G21/20 , G03G15/16
CPC分类号： G03G15/80 , G03G15/1675 , G03G21/203
摘要： An image forming apparatus including an image bearer, a transfer-bias power source, an environment sensor, and a controller. The controller controls the transfer-bias power source to change the DC component and the AC component, according to the at least one of temperature and humidity detected by the environment sensor and a duty of the transfer bias. The duty is A/(A+B)×100[%] where A denotes an area on a return-directional side to move toner from the recording sheet back to the image bearer, relative to a center value (Voff) of a maximum value and a minimum value of the transfer bias in one cycle of a waveform of the transfer bias, and B denotes an area on a transfer-directional side to move the toner from the image bearer to the recording sheet, relative to the center value (Voff) in the one cycle.

2. 发明申请

US20170235258A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 审中-公开
公开(公告)号：US20170235258A1
公开(公告)日：2017-08-17
申请号：US15427735
申请日：2017-02-08
申请人： Yuuji WADA , Naoto KOCHI , Hiroki NAKAMATSU , Kazuki YOGOSAWA , Takahiro SUZUKI , Shinya TANAKA , Kenji SUGIURA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Hirokazu ISHII , Takehide MIZUTANI , Atsushi NAGATA , Keigo NAKAMURA
发明人： Yuuji WADA , Naoto KOCHI , Hiroki NAKAMATSU , Kazuki YOGOSAWA , Takahiro SUZUKI , Shinya TANAKA , Kenji SUGIURA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Hirokazu ISHII , Takehide MIZUTANI , Atsushi NAGATA , Keigo NAKAMURA
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/1605 , G03G15/5029 , G03G2215/00738
摘要： An improved image forming apparatus includes an image bearer, a nip forming member, a transfer power source, and a controller. The controller switches a transfer mode between a first mode to transfer the toner image onto a first type sheet having a surface smoothness higher than a surface smoothness of a second type sheet and a second mode to transfer the toner image onto the second type sheet. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of greater than or equal to 50% that is a duty on the side of the opposite-peak value in the first mode. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of less than 50%, which is different from the opposite-peak duty of the first mode, in the second mode.

3. 发明申请

US20170299994A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20170299994A1
公开(公告)日：2017-10-19
申请号：US15483221
申请日：2017-04-10
申请人： Atsushi NAGATA , Shinya Tanaka , Hirokazu Ishii , Kenji Sugiura , Takehide Mizutani , Keigo Nakamura , Yuuji Wada , Naoto Kochi
发明人： Atsushi NAGATA , Shinya Tanaka , Hirokazu Ishii , Kenji Sugiura , Takehide Mizutani , Keigo Nakamura , Yuuji Wada , Naoto Kochi
IPC分类号： G03G15/00 , H04N1/032 , G03G15/04 , G06K15/12 , G03G15/043
CPC分类号： G03G15/5037 , G03G15/04 , G03G15/043 , G06K15/12 , H04N1/032
摘要： An image forming apparatus includes an image bearer, an image forming device to form a toner image on the image bearer with toner, a power source to output a bias to transfer the toner image onto a recording medium, and control circuitry. The circuitry controls the power source to decrease a peak-to-peak voltage of the bias in response to increase in at least one of temperature and humidity, when a time-averaged voltage of the bias is on a transfer side of transferring the toner to the recording medium, from a median value of maximum and minimum voltages of the bias. The circuitry controls the power source to increase the peak-to-peak voltage of the bias in response to increase in at least one of temperature and humidity, when the time-averaged voltage of the bias is on a return side of returning the toner to the image bearer, from the median value.

4. 发明申请

US20170235257A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 审中-公开
公开(公告)号：US20170235257A1
公开(公告)日：2017-08-17
申请号：US15432392
申请日：2017-02-14
申请人： Naoto KOCHI , Hirokazu ISHII , Seiichi KOGURE , Naohiro KUMAGAI , Kenji SUGIURA , Shinya TANAKA , Hiroki NAKAMATSU , Yuuji WADA , Junpei FUJITA , Takahiro SUZUKI , Kazuki YOGOSAWA , Atsushi NAGATA
发明人： Naoto KOCHI , Hirokazu ISHII , Seiichi KOGURE , Naohiro KUMAGAI , Kenji SUGIURA , Shinya TANAKA , Hiroki NAKAMATSU , Yuuji WADA , Junpei FUJITA , Takahiro SUZUKI , Kazuki YOGOSAWA , Atsushi NAGATA
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G5/005 , G03G5/147
摘要： An image forming apparatus includes an image bearer to bear a toner image, a nip forming member contacting the image bearer to form a transfer nip, and a transfer power source. The transfer bias has a transfer peak value to electrostatically move toner from the image bearer to the recording sheet and an opposite-peak value to electrostatically move less toner from the image bearer to the recording sheet than the transfer peak value. An opposite-peak duty of the transfer bias is less than 50%. The opposite-peak duty is tr/T×100% where T is one cycle of the transfer bias and tr is a time period during which the transfer bias is on a side of the opposite-peak value relative to an offset voltage of the transfer bias in the one cycle T.

5. 发明申请

US20150037054A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20150037054A1
公开(公告)日：2015-02-05
申请号：US14449270
申请日：2014-08-01
申请人： Atsushi NAGATA , Kenji SUGIURA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Yuuji WADA , Yusuke MITANI , Kazuki YOGOSAWA
发明人： Atsushi NAGATA , Kenji SUGIURA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Yuuji WADA , Yusuke MITANI , Kazuki YOGOSAWA
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/5058
摘要： An image forming apparatus includes an image bearer; a toner image forming unit, a transfer unit, a detector, and a controller. The toner image forming unit forms a plurality of types of density detection patterns on the surface of the image bearer in mutually-different positions in a surface-movement direction of the image bearer. The density detection patterns have mutually-different lengths in a direction orthogonal to the surface-movement direction of the image bearer. The transfer unit transfers the density detection patterns onto the surface of the transfer member. The detector detects image densities of the density detection patterns transferred on the surface of the transfer member. The controller calculates an image density difference between the density detection patterns on a basis of a detection result obtained by the detector, and corrects a transfer bias for transferring a toner image on a basis of a value of the image density difference.
摘要翻译：图像形成装置包括图像载体; 调色剂图像形成单元，转印单元，检测器和控制器。调色剂图像形成单元在图像承载体的表面移动方向上的相互不同的位置的图像载体的表面上形成多种类型的浓度检测图案。密度检测图案在与图像载体的表面移动方向正交的方向上具有相互不同的长度。转印单元将浓度检测图案转印到转印部件的表面上。检测器检测在转印部件的表面上转印的浓度检测图案的图像浓度。控制器基于由检测器获得的检测结果来计算浓度检测图案之间的图像浓度差，并且基于图像浓度差的值来校正用于转印调色剂图像的转印偏压。

6. 发明申请

US20150346651A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20150346651A1
公开(公告)日：2015-12-03
申请号：US14712307
申请日：2015-05-14
申请人： Haruki NAGATA , Ryo HASEGAWA , Naoto KOCHI , Atsushi NAGATA , Takahiro KONISHI
发明人： Haruki NAGATA , Ryo HASEGAWA , Naoto KOCHI , Atsushi NAGATA , Takahiro KONISHI
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/1605 , G03G2215/00738 , G03G2215/0193
摘要： An image forming apparatus includes an image bearer, a nip forming device, a contact-and-separation device, a thickness information retrieving device, and a controller. The contact-and-separation device moves the image bearer and the nip forming device to contact and separate from each other. The controller controls the contact-and-separation device based on information on a thickness of a recording medium obtained by the thickness information retrieving device such that in a case in which a thickness of a preceding recording medium and a thickness of a successive recording medium are different in continuous printing in which a plurality of recording media is printed out continuously, the contact-and-separation device adjusts a space between the image bearer and the nip forming device when the preceding recording medium exits the transfer nip to a preset size corresponding to the thickness of the successive recording medium that enters the transfer nip.
摘要翻译：图像形成装置包括图像载体，压区形成装置，接触 - 分离装置，厚度信息检索装置和控制器。接触分离装置使图像载体和辊隙形成装置相互接触和分离。控制器基于由厚度信息检索装置获得的记录介质的厚度的信息来控制接触 - 分离装置，使得在先前记录介质的厚度和连续记录介质的厚度为在连续打印多个记录介质的连续打印不同的情况下，当前一记录介质离开传送辊隙时，接触 - 分离装置调整图像载体和辊隙形成装置之间的空间，使其对应于进入转印辊隙的连续记录介质的厚度。

7. 发明申请

US20140270819A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20140270819A1
公开(公告)日：2014-09-18
申请号：US14209330
申请日：2014-03-13
申请人： Yuuji WADA , Atsushi NAGATA
发明人： Yuuji WADA , Atsushi NAGATA
IPC分类号： G03G15/08 , G03G15/16
CPC分类号： G03G15/553 , G03G15/0189 , G03G15/1605 , G03G15/1675 , G03G15/556
摘要： An image forming apparatus includes a primary transfer bias adjuster to adjust, in a second mode, a primary transfer bias by a correction amount in accordance with a degree of deterioration of a developing agent detected by a first developing agent condition detector so as to reduce a primary transfer current of the primary transfer bias upon transferring a toner image from a first image bearing member onto an intermediate transfer member, and to adjust, in a first mode, the primary transfer bias by a correction amount less than the correction amount in the second mode or not to adjust the primary transfer bias in accordance with the degree of deterioration of the developing agent detected by the first developing agent condition detector upon primarily transferring the toner image from the first image bearing member onto the intermediate transfer member.
摘要翻译：一种图像形成装置包括一次转印偏压调节器，用于根据由第一显影剂状态检测器检测到的显影剂的劣化程度，在第二模式中将一次转印偏压调整为校正量，从而减少在将调色剂图像从第一图像承载部件转印到中间转印部件上时，一次转印偏压的一次转印电流，并且以第一模式将一次转印偏压调整小于第二转印偏差中的校正量的校正量模式或不是根据在将调色剂图像从第一图像承载部件转印到中间转印部件上时由第一显影剂条件检测器检测到的显影剂的劣化程度来调整一次转印偏压。

8. 发明申请

US20130045031A1 CLEANING SYSTEM CONTROL METHOD, FIXING DEVICE, AND IMAGE FORMING APPARATUS INCORPORATING SAME 有权
标题翻译：清洁系统控制方法，固定装置和成像装置的图像形成装置
公开(公告)号：US20130045031A1
公开(公告)日：2013-02-21
申请号：US13585363
申请日：2012-08-14
申请人： Atsushi NAGATA , Keisuke KUBOTA , Takashi KAGAMI
发明人： Atsushi NAGATA , Keisuke KUBOTA , Takashi KAGAMI
IPC分类号： G03G15/20
CPC分类号： G03G15/2025
摘要： A fixing device includes a rotary fuser member, a rotary pressure member, and a cleaning system. The rotary fuser member is subjected to heating. The rotary pressure member is disposed opposite the fuser member. The cleaning system includes a cleaning web, a feeding mechanism, a positioning mechanism, and a controller. The cleaning web is disposed adjacent to the pressure member to wipe the pressure member. The feeding mechanism is operatively connected to the cleaning web to feed a new, unused portion of the cleaning web toward the pressure member. The positioning mechanism is operatively connected to at least one of the cleaning web and the pressure member to position the cleaning web and the pressure member with respect to each other. The controller is operatively connected with the feeding mechanism and the positioning mechanism to control feeding and positioning of the cleaning web.
摘要翻译：定影装置包括旋转定影构件，旋转压力构件和清洁系统。旋转定影部件经受加热。旋转压力构件与定影器构件相对设置。清洁系统包括清洁网，进给机构，定位机构和控制器。清洁网被布置成与压力构件相邻以擦拭压力构件。馈送机构可操作地连接到清洁纸幅，以将清洁纸幅的新的未使用部分朝向压力构件供给。所述定位机构可操作地连接到所述清洁带和所述压力构件中的至少一个，以将所述清洁纤维网和所述压力构件相对于彼此定位。控制器与进给机构和定位机构可操作地连接，以控制清洁卷筒的进给和定位。

9. 发明申请

US20190025735A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20190025735A1
公开(公告)日：2019-01-24
申请号：US16014085
申请日：2018-06-21
申请人： Ryo HASEGAWA , Kenji HONJOH , Atsushi NAGATA , Haruki NAGATA
发明人： Ryo HASEGAWA , Kenji HONJOH , Atsushi NAGATA , Haruki NAGATA
IPC分类号： G03G15/16 , G03G15/00
摘要： An image forming apparatus includes an apparatus body, a plurality of image bearers, an endless belt, a contact and separation mechanism to generate a first trajectory and a second trajectory of the endless belt, a sensor to detect an object on a surface of the endless belt, and a positioning mechanism to enable the sensor to detect the object in the first trajectory and the second trajectory of the endless belt. The positioning mechanism includes a stay to support the sensor, a first bracket, a second bracket, a first positioning portion attached to the apparatus body to position the sensor in a direction of rotation of the first bracket and the second bracket at a time of the first trajectory, and a second positioning portion attached to the second bracket to position the sensor in the direction of rotation of the first bracket at a time of the second trajectory.

10. 发明申请

US20170108804A1 TRANSFER DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME 有权
公开(公告)号：US20170108804A1
公开(公告)日：2017-04-20
申请号：US15287003
申请日：2016-10-06
申请人： Atsushi NAGATA
发明人： Atsushi NAGATA
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/0131 , G03G15/0189 , G03G15/1605 , G03G15/1675 , G03G15/556 , G03G15/6585
摘要： An image forming apparatus includes a plurality of image forming units, a plurality of image bearers, a transfer device, and a controller. The image forming units form a process color toner image and a special color toner image. The transfer device transfers the process color toner image and the special color toner image from the image bearers onto the intermediate transfer member. The controller is configured to correct a transfer bias applied to transfer the special color toner image onto the intermediate transfer member. The controller is configured to decrease the bias in a special color mode in which image formation is performed with only a special color and increase the bias in a full color mode in which image formation is performed with all of the special color and a process color, according to a degree of degradation of a developer used to form the special color toner image.

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