公开(公告)号：US07668484B2

公开(公告)日：2010-02-23

申请号：US11783152

申请日：2007-04-06

申请人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

发明人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

IPC分类号： G03G15/02

CPC分类号： G03G15/0233

摘要： The invention delivers a charging roller which is capable of preventing current leakage to a photoreceptor throughout life-time and which has a stable resistance value throughout life-time. The charging roller contains a metal core and a rubber layer formed on the core. The rubber layer is an epichlorohydrin-based rubber base material to which an electronic conductive agent and an ionic conductive agent are added. The rubber layer is subjected to surface processing by spraying the surface with a solution containing an isocyanate compound and heating. The amount of the electronic conductive agent added to the rubber base material is limited so that a volume resistivity when only the electronic conductive agent is added to the rubber base material is 1.46×106 Ω·cm or greater. In addition, the amount of the added ionic conductive agent is increased so that a volume resistivity when the electronic conductive agent and the ionic conductive agent are added to the rubber base material is 1.93×106 Ω·cm or less.

摘要翻译： 本发明提供一种充电辊，其能够在整个寿命期间防止电流对感光体的泄漏，并且在整个寿命期间具有稳定的电阻值。 充电辊包含形成在芯上的金属芯和橡胶层。 橡胶层是添加有电子导电剂和离子性导电剂的表氯醇类橡胶基材。 橡胶层通过用含有异氰酸酯化合物的溶液喷涂表面进行表面处理并加热。 添加到橡胶基材中的电子导电剂的量受到限制，使得只有电子导电剂添加到橡胶基材中时的体积电阻率为1.46×10 6Ω·cm以上。 此外，添加离子导电剂的量增加，使得当将电子导电剂和离子导电剂添加到橡胶基材时的体积电阻率为1.93×10 6Ω·cm·cm以下。

公开(公告)号：US20070253740A1

公开(公告)日：2007-11-01

申请号：US11790288

申请日：2007-04-24

申请人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

发明人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

IPC分类号： G03G15/02

CPC分类号： G03G15/0233

摘要： An image forming apparatus in which a charging roller charges an image carrier to which a lubricant is applied prevents slip of the charging roller. The charging roller is composed of a metal core and a rubber layer mainly made of an epichlorohydrin rubber formed around the metal core. A surface of this rubber layer is hardened with a surface treating solution containing an isocyanate compound. The surface of this rubber layer is also subjected to three abrading processes including two,stone grinding processes and one lapping process so that a ten-point height of irregularities Rz thereof becomes 11 μm or more.

摘要翻译： 一种图像形成装置，其中充电辊对施加了润滑剂的图像载体充电，防止了充电辊的滑动。 充电辊由金属芯和主要由形成在金属芯周围的表氯醇橡胶制成的橡胶层组成。 该橡胶层的表面用含有异氰酸酯化合物的表面处理溶液硬化。 该橡胶层的表面也进行三次研磨处理，其中包括两次，磨石工艺和一次研磨工艺，使得其十点高度的不规则Rz变为11μm或更大。

公开(公告)号：US20070253737A1

公开(公告)日：2007-11-01

申请号：US11783152

申请日：2007-04-06

申请人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

发明人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

IPC分类号： G03G15/02

CPC分类号： G03G15/0233

摘要： The invention delivers a charging roller which is capable of preventing current leakage to a photoreceptor throughout life-time and which has a stable resistance value throughout life-time. The charging roller contains a metal core and a rubber layer formed on the core. The rubber layer is an epichlorohydrin-based rubber base material to which an electronic conductive agent and an ionic conductive agent are added. The rubber layer is subjected to surface processing by spraying the surface with a solution containing an isocyanate compound and heating. The amount of the electronic conductive agent added to the rubber base material is limited so that a volume resistivity when only the electronic conductive agent is added to the rubber base material is 1.46×106 Ω·cm or greater. In addition, the amount of the added ionic conductive agent is increased so that a volume resistivity when the electronic conductive agent and the ionic conductive agent are added to the rubber base material is 1.93×106 Ω·cm or less.

摘要翻译： 本发明提供一种充电辊，其能够在整个寿命期间防止电流对感光体的泄漏，并且在整个寿命期间具有稳定的电阻值。 充电辊包含形成在芯上的金属芯和橡胶层。 橡胶层是添加有电子导电剂和离子性导电剂的表氯醇类橡胶基材。 橡胶层通过用含有异氰酸酯化合物的溶液喷涂表面进行表面处理并加热。 添加到橡胶基材中的电子导电剂的量被限制，使得只有电子导电剂添加到橡胶基材中时的体积电阻率为1.46×10 -6Ω或更大。 此外，添加的离子导电剂的量增加，使得当将电子导电剂和离子导电剂添加到橡胶基材时的体积电阻率为1.93×10 -6Ωcm或 减。

公开(公告)号：US07934316B2

公开(公告)日：2011-05-03

申请号：US12585130

申请日：2009-09-04

申请人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

发明人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

IPC分类号： B21K1/02 ,  F16C13/00

CPC分类号： G03G15/0233 ,  Y10T29/49544 ,  Y10T29/4956 ,  Y10T29/49563

摘要： An object of the present invention is to provide a charging roller (i) which includes a rubber member whose surface is subjected to a hardening treatment using a solvent containing at least an isocyanate compound and (ii) which can prevent leakage of an ionic conductive agent even if the charging roller is placed under conditions of high temperature and high humidity for a long time. The charging roller is made by forming a rubber layer on a metal core. The rubber layer is an epichlorohydrin based rubber base material to which an ionic conductive agent is added, the rubber layer being subjected to a surface treatment by applying a solution containing the isocyanate compound and heating it. This surface treatment is carried out under such conditions that a coefficient of dynamic friction at a contact portion between the rubber layer and a photoreceptor becomes 0.4 or less.

摘要翻译： 本发明的目的是提供一种充电辊（i），其包括使用至少含有异氰酸酯化合物的溶剂对其表面进行硬化处理的橡胶构件，和（ii）能够防止离子导电剂泄漏的充电辊 即使充电辊长时间处于高温高湿的条件下。 充电辊通过在金属芯上形成橡胶层而制成。 橡胶层是加入离子性导电剂的表氯醇类橡胶基材，通过涂布含有异氰酸酯化合物的溶液进行加热，对橡胶层进行表面处理。 该表面处理在橡胶层和感光体的接触部的动摩擦系数为0.4以下的条件下进行。

公开(公告)号：US20100003413A1

公开(公告)日：2010-01-07

申请号：US12585130

申请日：2009-09-04

申请人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

发明人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

IPC分类号： B05D3/10

CPC分类号： G03G15/0233 ,  Y10T29/49544 ,  Y10T29/4956 ,  Y10T29/49563

摘要： An object of the present invention is to provide a charging roller (i) which includes a rubber member whose surface is subjected to a hardening treatment using a solvent containing at least an isocyanate compound and (ii) which can prevent leakage of an ionic conductive agent even if the charging roller is placed under conditions of high temperature and high humidity for a long time. The charging roller is made by forming a rubber layer on a metal core. The rubber layer is an epichlorohydrin based rubber base material to which an ionic conductive agent is added, the rubber layer being subjected to a surface treatment by applying a solution containing the isocyanate compound and heating it. This surface treatment is carried out under such conditions that a coefficient of dynamic friction at a contact portion between the rubber layer and a photoreceptor becomes 0.4 or less.

摘要翻译： 本发明的目的是提供一种充电辊（i），其包括使用至少含有异氰酸酯化合物的溶剂对其表面进行硬化处理的橡胶构件，和（ii）能够防止离子导电剂泄漏的充电辊 即使充电辊长时间处于高温高湿的条件下。 充电辊通过在金属芯上形成橡胶层而制成。 橡胶层是加入离子性导电剂的表氯醇类橡胶基材，通过涂布含有异氰酸酯化合物的溶液进行加热，对橡胶层进行表面处理。 该表面处理在橡胶层和感光体的接触部的动摩擦系数为0.4以下的条件下进行。

公开(公告)号：US20070271792A1

公开(公告)日：2007-11-29

申请号：US11785651

申请日：2007-04-19

申请人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

发明人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

IPC分类号： G03G15/02 ,  B23P17/00

CPC分类号： G03G15/0233 ,  Y10T29/49544 ,  Y10T29/4956 ,  Y10T29/49563

摘要： An object of the present invention is to provide a charging roller (i) which includes a rubber member whose surface is subjected to a hardening treatment using a solvent containing at least an isocyanate compound and (ii) which can prevent leakage of an ionic conductive agent even if the charging roller is placed under conditions of high temperature and high humidity for a long time. The charging roller is made by forming a rubber layer on a metal core. The rubber layer is an epichlorohydrin based rubber base material to which an ionic conductive agent is added, the rubber layer being subjected to a surface treatment by applying a solution containing the isocyanate compound and heating it. This surface treatment is carried out under such conditions that a coefficient of dynamic friction at a contact portion between the rubber layer and a photoreceptor becomes 0.4 or less.

摘要翻译： 本发明的目的是提供一种充电辊（i），其包括使用至少含有异氰酸酯化合物的溶剂对其表面进行硬化处理的橡胶构件，和（ii）能够防止离子导电剂泄漏的充电辊 即使充电辊长时间处于高温高湿的条件下。 充电辊通过在金属芯上形成橡胶层而制成。 橡胶层是加入离子性导电剂的表氯醇类橡胶基材，通过涂布含有异氰酸酯化合物的溶液进行加热，对橡胶层进行表面处理。 该表面处理在橡胶层和感光体的接触部的动摩擦系数为0.4以下的条件下进行。

公开(公告)号：US20070253738A1

公开(公告)日：2007-11-01

申请号：US11783506

申请日：2007-04-10

申请人： Tohru Sakuwa ,  Kouji Shinkawa ,  Toshiaki Kagawa

发明人： Tohru Sakuwa ,  Kouji Shinkawa ,  Toshiaki Kagawa

IPC分类号： G03G15/02

CPC分类号： G03G15/0216 ,  G03G15/5033

摘要： In an image forming apparatus in which a charging roller charges a photoreceptor which is rotating at high speed, damages of the photoreceptor and the charging roller are prevented. The photoreceptor included in an electrophotographic image forming apparatus is rotated at high speed so that a speed of a peripheral surface of the photoreceptor is 225 mm per second or more. Then, the charging roller is rotated by contacting the photoreceptor, so as to charge the photoreceptor. Here, a surface pressure M of a contact portion between the photoreceptor and the charging roller is set to more than 0.8 g/mm2 but not more than 3.5 g/mm2.

摘要翻译： 在充电辊对高速旋转的感光体充电的图像形成装置中，防止了感光体和充电辊的损伤。 包含在电子照相图像形成装置中的感光体以高速旋转，使得感光体的圆周表面的速度为每秒225毫米。 然后，通过使感光体接触使充电辊旋转，从而对感光体充电。 这里，感光体和充电辊之间的接触部分的表面压力M设定为大于0.8g / mm 2，但不超过3.5g / mm 2， 。

公开(公告)号：US07869743B2

公开(公告)日：2011-01-11

申请号：US11790288

申请日：2007-04-24

申请人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

发明人： Toshiaki Kagawa ,  Kouji Shinkawa ,  Tohru Sakuwa

IPC分类号： G03G15/02

CPC分类号： G03G15/0233

摘要： An image forming apparatus in which a charging roller charges an image carrier to which a lubricant is applied prevents slip of the charging roller. The charging roller is composed of a metal core and a rubber layer mainly made of an epichlorohydrin rubber formed around the metal core. A surface of this rubber layer is hardened with a surface treating solution containing an isocyanate compound. The surface of this rubber layer is also subjected to three abrading processes including two stone grinding processes and one lapping process so that a ten-point height of irregularities Rz thereof becomes 11 μm or more.

摘要翻译： 一种图像形成装置，其中充电辊对施加了润滑剂的图像载体充电，防止了充电辊的滑动。 充电辊由金属芯和主要由形成在金属芯周围的表氯醇橡胶制成的橡胶层组成。 该橡胶层的表面用含有异氰酸酯化合物的表面处理溶液硬化。 该橡胶层的表面也进行三次研磨处理，包括两次研磨处理和一次研磨处理，使得其不均匀度Rz的十点高度为11μm以上。

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：US08774667B2

公开(公告)日：2014-07-08

申请号：US13051033

申请日：2011-03-18

申请人： Takashi Mukai ,  Toshiaki Kagawa ,  Hiroyuki Yamaji

发明人： Takashi Mukai ,  Toshiaki Kagawa ,  Hiroyuki Yamaji

IPC分类号： G03G15/20

CPC分类号： G03G15/2039 ,  G03G2215/0129

摘要： An image forming apparatus is provided. The image forming apparatus includes an image forming section, an intermediate transfer section, a secondary transfer section, a fixing section, a power source, a voltage detection section, a temperature detection section, and a fixing section control circuit. The fixing section control circuit includes a switching control section, a voltage judgment section, a temperature judgment section, and a preparation control section. When the switching control section switches the current conduction state to the heat source and the driving section from an off conduction state to an on conduction state and the voltage judgment section judges to be less than a threshold voltage, the preparation control section controls the preparation operation of the heating section such that the switching control section continues the on conduction state over a given idle time after the temperature judgment section has judged to be a preset temperature or higher.

摘要翻译： 提供一种图像形成装置。 图像形成装置包括图像形成部，中间转印部，二次转印部，固定部，电源，电压检测部，温度检测部和固定部控制电路。 定影部控制电路包括开关控制部，电压判定部，温度判定部和准备控制部。 当开关控制部分将导通状态从热源和驱动部分切换到导通状态，并且电压判断部分判断为小于阈值电压时，准备控制部分控制准备操作 使得在温度判定部判定为预设温度以上之后，切换控制部在规定的空闲时间内继续导通状态。