公开(公告)号：US20090263170A1

公开(公告)日：2009-10-22

申请号：US12425433

申请日：2009-04-17

申请人： Toshiaki Kagawa ,  Hiroyuki Kageyama

发明人： Toshiaki Kagawa ,  Hiroyuki Kageyama

IPC分类号： G03G15/20

CPC分类号： G03G15/2053 ,  G03G2215/2029 ,  G03G2215/2038 ,  G03G2215/2041

摘要： A fixing device includes a fixing belt for fixing an unfixed toner image onto a recording medium, a planar heating member for heating the fixing belt, and a pressure roller. The heating member includes a ceramic heat generating element having a PTC characteristic, and a high-thermal-conductive heat diffusion member. The fixing belt is formed in an endless shape and is supported around, at least, the high-thermal-conductive heat diffusion member, thereby to be heated. The ceramic heat generating element comes into contact with the fixing belt over the full width thereof with the high-thermal-conductive heat diffusion member interposed therebetween. The high-thermal-conductive heat diffusion member comes into contact with the fixing belt over the full width thereof and diffuses heat generated by the heat generating element, in the traveling direction of the fixing belt.

摘要翻译： 定影装置包括用于将未定影的调色剂图像定影到记录介质上的定影带，用于加热定影带的平面加热构件和加压辊。 加热构件包括具有PTC特性的陶瓷发热元件和高导热散热构件。 定影带形成为环状，并且至少被支撑在高导热性热扩散构件上，从而被加热。 陶瓷发热元件在整个宽度上与定影带接触，其中介于其间的高热传导热扩散元件。 高导热性热扩散构件在整个宽度上与定影带接触，并且在定影带的行进方向上扩散由发热元件产生的热量。

公开(公告)号：US07603069B2

公开(公告)日：2009-10-13

申请号：US11685244

申请日：2007-03-13

申请人： Shinji Yamana ,  Kenji Asakura ,  Toshiaki Kagawa ,  Hiroyuki Yamaji

发明人： Shinji Yamana ,  Kenji Asakura ,  Toshiaki Kagawa ,  Hiroyuki Yamaji

IPC分类号： G03G15/20

CPC分类号： G03G15/2064 ,  G03G2215/2016 ,  G03G2215/2019

摘要： In a fixing apparatus and an image forming apparatus of the present invention, an external heating section is provided that includes: an external heating belt; two heat rollers suspending the external heating belt and pressed against a fixing roller via the external heating belt; and a release/contact mechanism for causing the two heat rollers to separate from or contact with the fixing roller. With the heat rollers separated from the fixing roller by the release/contact mechanism, the external heating belt and the fixing roller are in contact with each other and the external heating belt follows rotation of the fixing roller. As a result, a fixing apparatus is provided that includes an external release/contact mechanism that can quickly operate in a small space and at low power without encouraging deterioration of the belt member. An image forming apparatus provided with such a fixing apparatus is also provided.

摘要翻译： 在本发明的定影装置和图像形成装置中，提供外部加热部，其包括：外部加热带; 两个热辊将外部加热带悬挂并经由外部加热带压靠在定影辊上; 以及用于使两个热辊与定影辊分离或与定影辊接触的释放/接触机构。 由于通过释放/接触机构与定影辊分离的热辊，外部加热带和定影辊彼此接触，并且外部加热带随着定影辊的旋转。 结果，提供一种定影装置，其包括外部释放/接触机构，其可以在小的空间和低功率下快速地操作，而不会促使带部件的劣化。 还提供了一种设置有这种定影装置的图像形成装置。

公开(公告)号：US20090245900A1

公开(公告)日：2009-10-01

申请号：US12412427

申请日：2009-03-27

申请人： Toshiaki Kagawa

发明人： Toshiaki Kagawa

IPC分类号： G03G15/20

CPC分类号： G03G15/2042 ,  G03G2215/2029 ,  G03G2215/2035 ,  G03G2215/2038

摘要： A planar heat-generating body 42 of a fixing apparatus of the present invention includes (i) a resistive heat-generating body 43a containing small heat-generating bodies electrically connected in parallel and aligned in a direction perpendicular to a direction in which a fixing belt 32 moves and (ii) a PTC element and a corresponding small heat-generating body being provided to be connected in series with a power source 36, the PTC element having a resistance value increasing at a predetermined temperature or higher. The PTC element 37 and the small heat-generating body are provided in an area corresponding to a non-sheet passing area of the fixing belt 32, the non-sheet passing area being an area where a smallest-size sheet does not pass, the smallest-size sheet being smallest among sheets that the fixing apparatus deals with. This allows for prevention of a temperature increase in the non-sheet passing area with a simple arrangement.

摘要翻译： 本发明的定影装置的平面发热体42包括：（i）电阻发热体43a，其包含小型的发热体，该发热体并联地电连接并且在垂直于定影带 32移动，并且（ii）PTC元件和相应的小型发热体被提供以与电源36串联连接，PTC元件具有在预定温度或更高温度下增加的电阻值。 PTC元件37和小型发热体设置在与定影带32的非片材通过区域对应的区域中，非片材通过区域是最小尺寸的片材不通过的区域， 最小尺寸的片材在定影装置处理的片材中最小。 这允许以简单的布置来防止非片材通过区域的温度升高。

公开(公告)号：US20080317503A1

公开(公告)日：2008-12-25

申请号：US12213270

申请日：2008-06-17

申请人： Hideki Ohnishi ,  Toshiaki Kagawa

发明人： Hideki Ohnishi ,  Toshiaki Kagawa

IPC分类号： G03G15/02

CPC分类号： G03G15/0291 ,  G03G2215/028

摘要： A needle electrode having a pointed section is provided so as to face a charge-target object, and a voltage to be applied to the needle electrode is set so that 2≦(E2·S2)/(E1·S1)≦5 is satisfied, where an ionization area A1 indicates an area where ionization occurs to oxygen molecules in an atmosphere; a dissociation area A2 indicates an area where dissociation occurs to the oxygen molecules in the atmosphere (excluding the ionization area A1); E1 indicates an average electric field strength in the ionization area A1; E2 indicates an average electric field strength in the dissociation area A2; S1 indicates square measure of the ionization area A1 on a plane which includes a straight line connecting the needle electrode and the charge-target object so that a distance between the needle electrode and the charge-target object becomes a shortest distance; and S1 indicates square measure of the dissociation area A2 of the plane. Thus, the electric charging device is capable of carrying out charging which (i) excels in charging uniformity, (ii) reduces products such as ozone and nitrogen oxide and (iii) stably continues for a long stretch of time.

摘要翻译： 具有尖锐部分的针状电极被设置为面对充电目标物体，并且施加到针电极的电压被设定为使得2 <=（E2.S2）/（E1.S1）<= 5 电离区域A1表示气氛中的氧分子发生电离的区域， 解离区域A2表示大气中的氧分子发生离解的区域（不包括电离区域A1）。 E1表示电离区域A1的平均电场强度; E2表示解离区域A2的平均电场强度; S1表示包括连接针状电极和充电对象物的直线的平面上的电离区域A1的平方测量，使得针状电极与电荷目标物体之间的距离成为最短距离; S1表示平面的解离区域A2的平方测量。 因此，充电装置能够进行（i）充电均匀性优异的充电，（ii）减少诸如臭氧和氮氧化物的产品，以及（iii）长时间稳定地延续。

公开(公告)号：US20070217807A1

公开(公告)日：2007-09-20

申请号：US11684194

申请日：2007-03-09

申请人： Tomohiro Maeda ,  Toshiaki Kagawa

发明人： Tomohiro Maeda ,  Toshiaki Kagawa

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G2215/2019

摘要： Comparisons are made independently for a controlled target temperature and a detected temperature of an endless belt, and a controlled target temperature and a detected temperature of a fixing roller. The operation of a halogen lamp installed in an external heating section is controlled based on results of these comparisons. This allows a temperature of the fixing member to be controlled more appropriately in a fixing apparatus that includes an external heating section for heating the fixing member.

摘要翻译： 针对控制的目标温度和环形带的检测温度以及受控目标温度和定影辊的检测温度独立进行比较。 基于这些比较的结果，控制安装在外部加热部中的卤素灯的操作。 这允许在包括用于加热定影构件的外部加热部分的定影装置中更适当地控制固定构件的温度。

公开(公告)号：US20070212111A1

公开(公告)日：2007-09-13

申请号：US11705038

申请日：2007-02-12

申请人： Toshiaki Kagawa ,  Tohru Sakuwa ,  Hideki Ohnishi

发明人： Toshiaki Kagawa ,  Tohru Sakuwa ,  Hideki Ohnishi

IPC分类号： G03G15/02 ,  G03G15/14

CPC分类号： G03G15/0208 ,  G03G15/0291 ,  G03G2215/028

摘要： Ions are produced without causing any accompanying corona discharge by applying, to ion generation needles positioned so as not to contact a photoconductor drum, a voltage higher than or equal to an ion production threshold voltage and lower than a corona discharge threshold voltage. The photoconductor drum is charged by the ions produced. Accordingly, a charging device is provided which is capable of stable charging with high uniformity over a long period whilst reducing the production of ozone, nitrogen oxides, and other discharge byproducts.

摘要翻译： 通过将离子产生针放置成不接触感光鼓，产生高于或等于离子产生阈值电压并低于电晕放电阈值电压的电压，产生离子而不引起任何伴随的电晕放电。 感光鼓由产生的离子充电。 因此，提供一种充电装置，其能够在长时间内具有高均匀性的稳定充电，同时减少臭氧，氮氧化物和其它放电副产物的产生。

公开(公告)号：US20070201910A1

公开(公告)日：2007-08-30

申请号：US11704388

申请日：2007-02-09

申请人： Toshiaki Kagawa ,  Hideki Ohnishi ,  Hiroshi Kida ,  Yoshiaki Masuda

发明人： Toshiaki Kagawa ,  Hideki Ohnishi ,  Hiroshi Kida ,  Yoshiaki Masuda

IPC分类号： G03G15/16

CPC分类号： G03G15/169 ,  G03G15/0266 ,  G03G15/0291 ,  G03G2215/028

摘要： The present invention is made to provide a pretransfer charging device, which allows (i) reduction of generation of discharge products such as ozone and nitroxide, (ii) excellent uniform charging, (iii) continuous stable charging for a long period of time, and (iv) restraint of distortion of a toner image. The pretransfer charging device includes (i) ion generation needles each provided face to face with an image carrier such as a photoconductor drum or an intermediating transfer belt, and (ii) a high-voltage power supply for applying a negative voltage to each of the ion generation needles. The voltage to be applied from the high-voltage power supply is not less than an ion production threshold voltage but is less than a corona discharge threshold voltage. With this, no corona discharge occurs but negative ions can be generated. This makes it possible to solve various problems caused due to the corona discharge.

摘要翻译： 本发明提供一种预转印充电装置，其能够（i）减少诸如臭氧和氮氧化物的放电产物的产生，（ii）优异的均匀充电，（iii）长时间连续稳定充电，以及 （iv）限制调色剂图像的变形。 预转印充电装置包括：（i）各离子产生针各自与诸如感光鼓或中间转印带的图像载体面对面地设置，以及（ii）高压电源，用于向 离子生成针。 从高压电源施加的电压不小于离子产生阈值电压，但小于电晕放电阈值电压。 由此，不会发生电晕放电，而是会产生负离子。 这使得可以解决由于电晕放电引起的各种问题。

公开(公告)号：US20060049175A1

公开(公告)日：2006-03-09

申请号：US11179825

申请日：2005-07-13

申请人： Shogo Yokota ,  Tomohiro Maeda ,  Toshiaki Kagawa

发明人： Shogo Yokota ,  Tomohiro Maeda ,  Toshiaki Kagawa

IPC分类号： H05B6/14

CPC分类号： G03G15/2053 ,  H05B6/145

摘要： In an external heating type induction heating device in which a magnetic field producing means is arranged in the outer circumferential portion of a heating roller 1, two heat generating layers, namely a conductive shaft 1a and a surface heat generating layer 1c, are provided in the heating roller 1, and the surface heat generating layer 1c is formed having a thickness through which passes a portion of an alternating magnetic field, and the conductive shaft 1a at a center of the heating roller 1 is heated by a portion of the alternating magnetic field produced by the magnetic field producing means passing through the surface heat generating layer 1c to link to the conductive shaft 1a present at the center of the roller, thereby preventing a drop in a surface temperature of the heating roller 1.

摘要翻译： 在加热辊1的外周部设置有磁场产生装置的外部加热型感应加热装置中，设置有两个发热层，即导电轴1a和表面发热层1c， 在加热辊1中，并且形成表面发热层1c，其具有通过交变磁场的一部分的厚度，并且加热辊1的中心处的导电轴1a被加热部分 由磁场产生装置产生的交变磁场通过表面发热层1c连接到存在于辊的中心的导电轴1a，从而防止加热辊1的表面温度下降。

公开(公告)号：US20050135848A1

公开(公告)日：2005-06-23

申请号：US11011369

申请日：2004-12-15

申请人： Toshiaki Kagawa ,  Hiroshi Kida ,  Toyoaki Nanba ,  Kouji Yamaji ,  Tatsuya Shinkawa

发明人： Toshiaki Kagawa ,  Hiroshi Kida ,  Toyoaki Nanba ,  Kouji Yamaji ,  Tatsuya Shinkawa

IPC分类号： G03G15/00 ,  G03G13/20 ,  G03G15/20

CPC分类号： G03G15/2053 ,  G03G15/2064 ,  G03G2215/2093

摘要： A fixing device includes a fixing member in contact with an unfixed image constituted of developer T on one side of a recording material P; and a pressure member pressed against the fixing member. The fixing device fixes the unfixed image onto the recording material P by causing the recording material P, charged so as to have a same polarity as a polarity of the developer T, to pass through a gap between the fixing member and the pressure member. In the fixing device, an inflow current into the fixing member Ih is 0 when the recording material P passes through the gap between the fixing member and the pressure member. This securely restrains the developer on the recording material from electrostatically offset to the side of the fixing device, thereby maintaining the formation of high quality images.

摘要翻译： 定影装置包括与由记录材料P的一侧上的显影剂T构成的未定影图像接触的固定构件; 以及压靠构件的压力构件。 定影装置通过使具有与显影剂T的极性相同的极性的记录材料P通过固定构件和压力构件之间的间隙来将未定影的图像定影到记录材料P上。 在定影装置中，当记录材料P通过固定构件和压力构件之间的间隙时，进入固定构件Ih的流入电流为0。 这可靠地限制记录材料上的显影剂静电偏移到定影装置的侧面，从而保持形成高质量的图像。

公开(公告)号：US06687482B2

公开(公告)日：2004-02-03

申请号：US10268603

申请日：2002-10-10

申请人： Tomohiro Maeda ,  Toshiaki Kagawa

发明人： Tomohiro Maeda ,  Toshiaki Kagawa

IPC分类号： G03G1520

CPC分类号： H05B6/105 ,  B41J11/002 ,  G03G15/2053 ,  H05B3/0095 ,  H05B6/145

摘要： The fixing apparatus which acts as a heating apparatus, includes a heating roller; a pressure-applying roller, arranged face to face with the heating roller, for allowing a recording sheet to be conveyed by the heating and pressure-applying rollers as nipped therebetween; and a heating device for heating the heating roller. The heating roller has a first elastic layer made of an elastic material, a conductive layer disposed in the outer periphery of the first elastic layer, an elasticity-imparted second elastic layer disposed in the outer periphery of the conductive layer, and a peeling layer disposed in the outer periphery of the second elastic layer. The conductive layer of the heating roller is induction-heated by the heating device, thereby reducing the warm-up time. By providing the second elastic layer, adequate elasticity is imparted to the heating roller's surface. The toner image on the recording sheet excels in fixability and gloss property.

摘要翻译： 作为加热装置的定影装置包括加热辊; 压力辊，与加热辊面对面设置，用于允许记录纸被夹在其间的加热和加压辊传送; 以及用于加热加热辊的加热装置。 加热辊具有由弹性材料制成的第一弹性层，设置在第一弹性层的外周的导电层，设置在导电层的外周的弹性赋予的第二弹性层，以及设置在该导电层的外周的剥离层 在第二弹性层的外周。 加热辊的导电层由加热装置感应加热，从而减少预热时间。 通过提供第二弹性层，赋予加热辊表面足够的弹性。 记录纸上的调色剂图像的定影性和光泽性优异。