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1. 发明专利

JP2011191508A Fixing device and image forming apparatus 有权
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2011191508A
公开(公告)日：2011-09-29
申请号：JP2010057420
申请日：2010-03-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAITO KAZUYA , YOSHIKAWA MASAAKI , ISHII KENJI , YOSHINAGA HIROSHI , IWATANI NAOTAKE , YAMAGUCHI YOSHINORI , IKEBUCHI YUTAKA , TOKUDA TETSUO , IMADA TAKAHIRO , HASE TAKAMASA , SHIMOKAWA TOSHIHIKO , FUJIMOTO IPPEI
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus which makes it possible to perform the restoration from a standby state at high speed while reducing an amount of overshoot of temperature of the fixing belt.
SOLUTION: The image forming apparatus has a fixing device 20 including a fixing belt 24 and a pressure roller 21 pressed against the fixing belt 24. The fixing device 20 includes a temperature detection means 25 detecting the temperature of the fixing belt 24, and a temperature controller 26 controlling the temperature of the fixing belt 24. During restoring operation that the fixing belt 24 is rotated from the standby state in which it is heated in a stationary state, and its temperature is raised to paper passing temperature, a temperature controller 26 performs heating operation by ON/OFF control for a predetermined time from the time when the fixing belt 24 starts rotation, and performs switching to heating operation by PID control after the predetermined time elapses.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种图像形成装置，其能够在减少定影带的温度过冲量的同时高速地进行从待机状态的恢复。解决方案：图像形成装置具有定影装置20，该定影装置20包括定影带24和压靠在定影带24上的加压辊21.定影装置20包括检测定影带24的温度的温度检测装置25，以及控制定影带24的温度的温度控制器26.在定影带24从其在静止状态下被加热的待机状态旋转并且其温度升高到纸张通过温度的恢复操作期间，温度控制器26从定影带24开始旋转之后的预定时间开始通过ON / OFF控制进行加热操作，并且经过预定时间后通过PID控制切换到加热操作。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2010072426A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2010072426A
公开(公告)日：2010-04-02
申请号：JP2008240780
申请日：2008-09-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： EBARA MASANAO , IWATANI NAOTAKE , YAMAGUCHI YOSHINORI
IPC分类号： G03G21/14 , B65H7/02
CPC分类号： G03G15/657 , G03G15/2028 , G03G2215/00565
摘要： PROBLEM TO BE SOLVED: To prevent the deterioration in transportation quality of transfer material and in image quality caused due to failure in accuracy for relative positions of a transfer unit and a fixing unit by improving the accuracy for the relative positions of both while meeting a recent need for a low-cost image forming apparatus. SOLUTION: An image on an intermediate transfer belt 7A is transferred onto paper at the transfer unit 50 when the paper 11 passes through a transfer position P. Afterwards, the transferred image on the paper is fixed to the paper when the paper is inserted into the fixing unit 30 and passes a fixing nip N. Such image forming apparatus includes: a measuring means for measuring the degree of inclination of the transported paper in a transfer material transporting path 16 from the transfer position to the fixing unit; and an adjusting means for moving and adjusting attaching position(s) of either one or both of the transfer unit and the fixing unit based on the measured result of the measuring means. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了防止由于转印单元和定影单元的相对位置的精度的故障而导致的转印材料的输送质量的劣化和图像质量，通过提高两者的相对位置的精度满足最近对低成本图像形成装置的需要。
解决方案：当纸张11通过转印位置P时，中间转印带7A上的图像在转印单元50上被转印到纸张上。然后，当纸张为纸张时，纸上传送的图像被固定在纸上插入定影单元30并通过定影夹持部N.这种图像形成装置包括：测量装置，用于测量转印材料传送路径16中输送的纸张从转印位置到定影单元的倾斜程度; 以及调节装置，用于基于测量装置的测量结果移动和调整转印单元和定影单元中的一个或两个的附接位置。版权所有（C）2010，JPO＆INPIT

3. 发明专利

JP2009037133A Fixing device and image forming apparatus 有权
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2009037133A
公开(公告)日：2009-02-19
申请号：JP2007203061
申请日：2007-08-03
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YAMAGUCHI YOSHINORI , EBARA MASANAO , YOSHINAGA HIROSHI , IWATANI NAOTAKE
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and image forming apparatus allowing cost reduction by integrating components constituting the electric circuit and simplifying the processing processes while securing safety.
SOLUTION: This fixing device makes a toner image pass in the orientation where it comes into contact with the surface of a fixing belt 25, and applies heat and pressure to the toner of the toner image during passing to fix the toner image to a record medium. Electric supply to heaters 30 and 31 is performed by a thin electrode plate 40 crept in a cover 33 made of resin under the fixing device while a predetermined amount or more is spaced from a metal member in a device main body.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种定影装置和图像形成装置，通过集成构成电路的部件并且在确保安全性的同时简化处理过程，从而降低成本。解决方案：该定影装置使调色剂图像在与定影带25的表面接触的方向上通过，并且在通过期间将调色剂图像定影到调色剂图像的调色剂上并施加热量和压力记录媒介。电加热器30和31的电力由固定装置下的由树脂制成的盖子33中的细电极板40进行，同时在设备主体中与金属构件隔开预定量或更多的间隔。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2013148809A Fixing device and image forming apparatus 有权
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2013148809A
公开(公告)日：2013-08-01
申请号：JP2012010848
申请日：2012-01-23
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHIMOKAWA TOSHIHIKO , SATO MASAHIKO , YOSHIKAWA MASAAKI , ISHII KENJI , YOSHINAGA HIROSHI , OGAWA SADAFUMI , IMADA TAKAHIRO , TAKAGI HIROTADA , SAITO KAZUYA , IWATANI NAOTAKE , YAMAJI KENSUKE , KAWATA TEPPEI , HASE TAKEMASA , YUASA SHUTARO , SESHIMO TAKUYA , UCHITANI TAKESHI , YOSHIURA ARINOBU , GOTO SO , SUZUKI AKIRA
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing device which requires a short warm-up time and has high energy saving property, while being capable of shortening first print time from the time for standing by for heating and of safely controlling the temperature of a fixing belt.SOLUTION: A fixing device 200 comprises: a fixing member 201 which includes a heat source 202 and is rotatable; a pressure member 203 which can be rotated by a drive source and forms a nip by pressing the fixing member; abnormal temperature detection means 210 which is arranged in an opposite position to the fixing member and detects an abnormal temperature rise of the fixing member; and position changing means 211, 214 which change the position of the abnormal temperature detection means relative to the fixing member. It performs fixing processing on a recording medium passing through the nip by directly heating the fixing member by the heat source without interposition of a heat conductor. A gap between the abnormal temperature detection means and the fixing member when the fixing member is not rotating is set by the position changing means to be smaller than that of when the fixing member is rotating.
摘要翻译：要解决的问题：提供一种需要较短的预热时间并且具有高节能性的定影装置，同时能够缩短从待机时间开始的第一打印时间以及加热时的安全控制皮带。解决方案：定影装置200包括：固定构件201，其包括热源202并且可旋转; 压力构件203，其可以通过驱动源旋转并通过按压固定构件形成压区; 异常温度检测装置210，其布置在与固定构件相对的位置，并检测固定构件的异常升温; 以及改变异常温度检测装置相对于固定构件的位置的位置改变装置211,214。它通过直接通过热源加热固定件而不插入热导体，对通过辊隙的记录介质进行定影处理。当定位构件不旋转时，异常温度检测装置和固定构件之间的间隙通过位置改变装置设置成小于当固定构件旋转时的间隙。

5. 发明专利

JP2012145626A Fixing device, image forming device and fixing control method 有权
标题翻译：固定装置，图像形成装置和固定控制方法
公开(公告)号：JP2012145626A
公开(公告)日：2012-08-02
申请号：JP2011001841
申请日：2011-01-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IKEBUCHI YUTAKA , YOSHIKAWA MASAAKI , ISHII KENJI , ARAI YUJI , TAKAGI HIROTADA , IWATANI NAOTAKE , TOKUDA TETSUO , YAMAGUCHI YOSHINORI , SESHIMO TAKUYA , IMADA TAKAHIRO , FUJIMOTO IPPEI , YOSHINAGA HIROSHI , GOTO SO , YOSHIURA ARINOBU , SHIMOKAWA TOSHIHIKO
IPC分类号： G03G15/20
CPC分类号： G03G15/205
摘要： PROBLEM TO BE SOLVED: To obtain a stable image quality by preventing fixing failure at an energization rate of around 0% and around 100% when performing phase control on the energization of a heat source.SOLUTION: When controlling a fixing device in a mode which requires a small power like an energization rate of around 0% such as paper-feed mode, a soft start is made by using a control system 2 in which the energization rate includes a soft start period. When controlling the fixing device in a mode which requires a large power like an energization rate of around 100% such as start-up mode, a soft start is made by using a control system 1 in which the energization rate is added with a soft start period. With this, a continuous value of actual output power is obtained with respect to the energization rate at either of low duty or high duty resulting in a precise temperature control.
摘要翻译：要解决的问题：当对热源的通电进行相位控制时，通过防止在大约0％和大约100％的通电率下的定影故障来获得稳定的图像质量。解决方案：当以需要诸如送纸模式的大约0％的通电率的小功率的方式控制定影装置时，通过使用控制系统2进行软启动，其中通电速率包括软启动期。当以需要诸如启动模式等大约100％的通电率的大功率的方式控制定影装置时，通过使用控制系统1进行软启动，其中通电速率加上软启动期。由此，可以获得相对于低占空比或高占空比的通电率的实际输出功率的连续值，从而实现精确的温度控制。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2011180220A A fixing device, and an image forming apparatus having the same 有权
标题翻译：固定装置和图像形成装置，包括它们
公开(公告)号：JP2011180220A
公开(公告)日：2011-09-15
申请号：JP2010041952
申请日：2010-02-26
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IWATANI NAOTAKE , YOSHIKAWA MASAAKI , SHINSHI AKIRA , ISHII KENJI , HASEGAWA KENICHI , YOSHINAGA HIROSHI , YAMAGUCHI YOSHINORI , IKEBUCHI YUTAKA , FUJIMOTO IPPEI , TAMAKI TOSHITARO , SHIMOKAWA TOSHIHIKO , TOKUDA TETSUO
IPC分类号： G03G15/20
CPC分类号： G03G15/2085 , G03G15/2028 , G03G2215/2035 , G03G2221/1672
摘要： PROBLEM TO BE SOLVED: To provide a fixing device that reduces slack of an endless belt at the exit side of a fixing nip part as much as possible in a fixing device using a so-called RAS fixing system. SOLUTION: The fixing device includes: a flexible endless belt; a pipe-shaped metal heat conductor which is fixedly installed adjacent to the endless belt at the inner peripheral side of the endless belt and is heated by a heat source; and a pressure member which forms a fixing nip part by contacting the metal heat conductor through the endless belt. The endless belt is heated by receiving heat from the metal heat conductor which is heated inside the endless belt, and also is movable around the outer peripheral surface of the metal heat conductor fixedly installed, in accordance with the rotation of the pressure member. In such a fixing device, a separation member for separating and conveying a recording medium coming out of the fixing nip part is provided at the exit side of the fixing nip part, and the endless belt at the exit side of the fixing nip part is pressed against the metal heat conductor by using the separation member. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种定影装置，其使用所谓的RAS固定系统在定影装置中尽可能多地减少定影夹持部的出射侧的环形带的松弛。解决方案：定影装置包括：柔性环形带; 管状金属导热体，其在环形带的内周侧与环形带相邻地固定地安装，并被热源加热; 以及通过使所述金属导热体与所述环形带接触而形成定影辊隙部的压力部件。通过从环形带内加热的金属导热体接收热量来加热环形带，并且也可以根据压力构件的旋转而围绕固定地安装的金属导热体的外周表面移动。在这种定影装置中，在定影夹持部的出射侧设置有用于分离和传送从定影夹持部分出来的记录介质的分离部件，并且在定影夹持部的出口侧的环形带被按压通过使用分离构件抵靠金属导热体。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2013178488A Image formation apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2013178488A
公开(公告)日：2013-09-09
申请号：JP2012282400
申请日：2012-12-26
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HASE TAKEMASA , SATO MASAHIKO , NAMEKATA SHINICHI , ISHII KENJI , UCHITANI TAKESHI , OGAWA SADAFUMI , KAWATA TEPPEI , YOSHIURA ARINOBU , SAITO KAZUYA , SHIMOKAWA TOSHIHIKO , YUASA SHUTARO , YAMAJI KENSUKE , YOSHIKAWA MASAAKI , YOSHINAGA HIROSHI , TAKAGI HIROTADA , IWATANI NAOTAKE , SESHIMO TAKUYA , IMADA TAKAHIRO , GOTO SO , SUZUKI AKIRA
IPC分类号： G03G15/20 , B65H5/02 , G03G21/00
CPC分类号： G03G15/2085 , G03G15/2039 , G03G15/205 , G03G15/2078 , G03G15/55
摘要： PROBLEM TO BE SOLVED: To provide an image formation apparatus that enables further energy saving.SOLUTION: An image formation apparatus includes a fixation device 20 having: a rotatable endless fixation belt 21; a nip formation member 24 arranged inside the fixation belt 21; a pressure roller 22 for forming a nip part between the fixation belt 21 by making contact with the nip formation member 24 through the fixation belt 21; a heater 23 arranged inside the fixation belt 21 and heating the fixation belt 21; and a temperature sensor 27 for detecting the temperature of the fixation belt 21. At performing an image formation job, after the last recording medium has passed through the fixation device 20, rotation drive of the fixation belt 21 is controlled to stop before rotation drive of the discharge roller pair 13.
摘要翻译：要解决的问题：提供一种能够进一步节能的图像形成装置。解决方案：图像形成装置包括：固定装置20，具有：可旋转环形固定带21; 布置在定影带21内的辊隙形成构件24; 用于通过与定影带21与辊隙形成构件24接触而在定影带21之间形成咬合部的加压辊22; 设置在定影带21内部并加热定影带21的加热器23; 以及用于检测定影带21的温度的温度传感器27.在执行图像形成作业时，在最后的记录介质通过定影装置20之后，控制定影带21的旋转驱动以在旋转驱动之前停止排出辊对13。

8. 发明专利

JP2013164438A Fixing device and image forming apparatus 有权
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2013164438A
公开(公告)日：2013-08-22
申请号：JP2012026030
申请日：2012-02-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： UCHITANI TAKESHI , SATO MASAHIKO , YOSHIKAWA MASAAKI , ISHII KENJI , OGAWA SADAFUMI , IMADA TAKAHIRO , TAKAGI HIROTADA , SAITO KAZUYA , IWATANI NAOTAKE , SHIMOKAWA TOSHIHIKO , YAMAJI KENSUKE , KAWATA TEPPEI , HASE TAKEMASA , SESHIMO TAKUYA , YUASA SHUTARO , YOSHIURA ARINOBU , GOTO SO , SUZUKI AKIRA , YOSHINAGA HIROSHI
IPC分类号： G03G15/20
CPC分类号： G03G15/2078 , G03G15/2039 , G03G15/2042 , G03G2215/2035
摘要： PROBLEM TO BE SOLVED: To provide a fixing device that prevents a reduction in temperature detection accuracy even when a temperature of a fixing belt increases due to temperature rise.SOLUTION: A fixing device 20 includes a fixing belt 21, a nip forming member 24, a pressure roller 22 that is an opposite rotating body, and a halogen heater 23 that is a heat source. The fixing device 20 is further provided with a reflection member 26 that reflects heat from the halogen heater 23; and the heat of the heater is concentrated into a predetermined range. A temperature sensor 27 for detecting a surface temperature of the fixing belt is arranged to detect the vicinity of a portion of the fixing belt 21 that is most likely to be deformed during heating by the halogen heater 23.
摘要翻译：要解决的问题：提供一种定影装置，即使当定影带的温度由于温度升高而升高时也能够防止温度检测精度的降低。解决方案：定影装置20包括定影带21，辊隙形成构件24，作为相反旋转体的加压辊22和作为热源的卤素加热器23。定影装置20还设置有反射部件26，其反射来自卤素加热器23的热量; 并且加热器的热量集中在预定范围内。布置用于检测定影带的表面温度的温度传感器27，以检测由卤素加热器23加热期间最可能变形的定影带21的一部分附近。

9. 发明专利

JP2012185295A Fixing device and image forming apparatus 审中-公开
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2012185295A
公开(公告)日：2012-09-27
申请号：JP2011047913
申请日：2011-03-04
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IKEBUCHI YUTAKA , YOSHIKAWA MASAAKI , ISHII KENJI , YOSHINAGA HIROSHI , ARAI YUJI , TAKAGI HIROTADA , IWATANI NAOTAKE , TOKUDA TETSUO , YAMAGUCHI YOSHINORI , FUJIMOTO IPPEI , SESHIMO TAKUYA , YOSHIURA ARINOBU , IMADA TAKAHIRO , GOTO SO , SHIMOKAWA TOSHIHIKO
IPC分类号： G03G15/20
CPC分类号： G03G15/2039
摘要： PROBLEM TO BE SOLVED: To provide a fixing device that has a smaller ripple of fixing temperature relative to target control temperature, suppresses flicker phenomenon, and prevents drop of fixing temperature, and an image forming apparatus.SOLUTION: In the case where soft start for gradually heating a fixing heater 25 and/or soft stop for gradually cooling the fixing heater 25 are performed, the fixing heater 25 is driven in a lighting duty to which a correction duty is added so that a value obtained by dividing the integrated value of energization time during control period by the control period equals a lighting duty calculated by a PID controller 51 based on the temperature detected by temperature detection means 40.
摘要翻译：要解决的问题：提供一种具有相对于目标控制温度具有较小定影温度波动的定影装置，抑制闪烁现象，并防止定影温度降低，以及图像形成装置。
解决方案：在执行用于逐渐加热定影加热器25的软启动和/或用于逐渐冷却定影加热器25的软停止的情况下，定影加热器25以增加校正负荷的照明负荷被驱动使得通过将控制周期内的通电时间的积分值除以控制周期而获得的值等于由PID控制器51基于由温度检测装置40检测的温度计算的照明占空比。版权所有（C）2012 ，JPO＆INPIT

10. 发明专利

JP2012053148A Image forming device 有权
标题翻译：图像形成装置
公开(公告)号：JP2012053148A
公开(公告)日：2012-03-15
申请号：JP2010193862
申请日：2010-08-31
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IKEBUCHI YUTAKA , YAMAGUCHI YOSHINORI , SHIMOKAWA TOSHIHIKO , ISHII KENJI , IWATANI NAOTAKE , IMADA TAKAHIRO , TOKUDA TETSUO , HASE TAKEMASA , YOSHINAGA HIROSHI , FUJIMOTO IPPEI , YOSHIKAWA MASAAKI
IPC分类号： G03G15/20
CPC分类号： G03G15/2039
摘要： PROBLEM TO BE SOLVED: To provide an image forming device capable of preventing the service life of a halogen lamp serving as a heating source to heat a fixing member from deteriorating.SOLUTION: A method of controlling a halogen lamp comprises the steps of: calculating a heater lighting duty by a PID control or the like from a history of fixing roller temperatures detected by a temperature sensor (S1); determining whether or not a calculated duty "A" is equal to "B" or more and less than "C" (S2); in the case where the duty "A" is equal to "B" or more and less than "C", proceeding to a step of S3, changing the heater lighting duty and processing an output of the heater lighting duty (S5); and on the other hand, in the case where the duty "A" is determined to be less than "B" and equal to "C" or more at the step of S2, proceeding to a step of S4, determining the duty "A" as it is and performing a heater lighting control at the step of S5.
摘要翻译：要解决的问题：提供一种能够防止用作加热源的卤素灯的使用寿命以加热定影部件的图像形成装置的劣化。解决方案：一种控制卤素灯的方法包括以下步骤：通过温度传感器检测的定影辊温度的历史（S1），通过PID控制等来计算加热器照明占空比; 确定计算的占空比“A”是否等于“B”以上且小于“C”（S2）; 在占空比“A”等于“B”以上且小于“C”的情况下，进入S3的步骤，改变加热器照明占空比并处理加热器照明占空比的输出（S5）; 另一方面，在S2的步骤中将占空比“A”确定为小于“B”并等于“C”或更大的情况下，进入步骤S4，确定占空比“A” “在S5的步骤中进行加热器照明控制。版权所有（C）2012，JPO＆INPIT

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