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    • 1. 发明专利
    • 画像加熱装置
    • 图像加热装置
    • JP2015043020A
    • 2015-03-05
    • JP2013174318
    • 2013-08-26
    • キヤノン株式会社Canon Inc
    • KURATA MUNEHITOHIRAI MASAHIDEOHATA SEIJI
    • G03G15/20
    • 【課題】加熱回転体の周方向の温度ムラに起因する画像不良の発生を抑制すると共に、温度リップル解消のための待機時間が短縮されることで立ち上げ時間を短縮できる画像加熱装置を提供する。【解決手段】画像加熱装置で、加熱回転体と、前記加熱回転体と接触して、記録材を挟持搬送しつつ加熱するニップ部を形成する加圧体と、前記記録材を画像加熱するときの第1の回転速度よりも遅い第2の回転速度で前記加熱回転体の回転を開始し、前記記録材が前記ニップ部に突入するまでに前記第1の回転速度へ増速させる画像加熱準備期間の期間中に、前記加熱回転体を少なくとも1回転変位させる制御手段と、を有する。【選択図】図1
    • 要解决的问题:提供一种图像加热装置,其可以抑制由于加热旋转体的周向温度不均匀引起的图像缺陷的发生,并且通过缩短用于温度波纹消除的待机时间来缩短启动时间。解决方案: 图像加热装置包括:加热旋转体; 与加热旋转体接触以形成夹持部的压力体,其中记录材料被保持和传送时被加热; 以及控制装置,在加热旋转体开始以比用于记录材料的图像加热的第一转速慢的第二转速开始旋转的图像加热预备期间,将加热旋转体旋转移动至少一次,并且速度 在记录材料冲入辊隙部分之前增加到第一转速。
    • 2. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2014048636A
    • 2014-03-17
    • JP2012194199
    • 2012-09-04
    • Canon Incキヤノン株式会社
    • YOSHIOKA MASATOICHINOSE KIMITAKAHIRAI MASAHIDEKUME TAKAOKURATA MUNEHITOMINAGAWA DAISUKE
    • G03G21/14B65H7/02G03G15/20
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of preventing the reduction of image accuracy in a transfer part, or the like by optimizing the loop of a sheet between the transfer part and a fixing part.SOLUTION: The image forming apparatus includes: a transfer part 4 transferring a toner image formed on an image carrier to the sheet; a fixing part 5 conveying the sheet P, while sandwiching the sheet P, to fix the toner image to the sheet; a first loop sensor 110 transmitting a first detection signal, when the loop of the sheet having a first height or more is detected between the transfer part 4 and the fixing part 5; a second loop sensor 120 transmitting a second detection signal, when the loop of the sheet having a second height or more is detected between the first loop sensor 110 and the fixing part 5; a timer T measuring the transmission time of the first detection signal; and a control part 8 changing the conveyance speed of the sheet by the fixing part 5 to a previously set first conveyance speed, when the second detection signal is received and changes the first conveyance speed to a second conveyance speed higher than the first conveyance speed, when the transmission time of the first detection signal exceeds a predetermined transmission time.
    • 要解决的问题:提供一种能够通过优化传送部件和固定部件之间的片材的环路来防止传送部件等中的图像精度降低的图像形成装置。解决方案:图像形成装置包括 :将形成在图像载体上的调色剂图像转印到片材上的转印部分4; 传送纸张P的固定部分5,同时夹住纸张P,以将调色剂图像定影到纸张上; 当在转印部分4和固定部分5之间检测到具有第一高度或更多的纸张的环时,传送第一检测信号的第一回路传感器110; 当在第一环路传感器110和固定部分5之间检测到具有第二高度或更多的片材的环路时,发送第二检测信号的第二环路传感器120; 定时器T,测量第一检测信号的传输时间; 以及控制部8,其通过固定部5将片材的输送速度改变为预先设定的第一输送速度,当接收到第二检测信号时,将第一输送速度变更为高于第一输送速度的第二输送速度, 当第一检测信号的传输时间超过预定传输时间时。
    • 3. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2013117628A
    • 2013-06-13
    • JP2011264988
    • 2011-12-02
    • Canon Incキヤノン株式会社
    • MINAGAWA DAISUKEICHINOSE KIMITAKAHIRAI MASAHIDEYOSHIOKA MASATOKUME TAKAOKURATA MUNEHITO
    • G03G15/16
    • PROBLEM TO BE SOLVED: To provide a technique for more reliably suppressing the occurrence of an image defect due to changes in the environment including temperature and humidity, etc. and a secular change of an image forming apparatus.SOLUTION: An image forming apparatus detects solid white time current to be current flowing in a secondary transfer section 91 when certain transfer bias is applied to the secondary transfer section 91 in a state where a toner image is not formed in an intermediate transfer belt 5 and toner image formation time current to be current flowing in the secondary transfer section 91 when the transfer bias is applied to the secondary transfer section 91 in a state where the toner image is formed in the intermediate transfer belt 5. When a difference between an absolute value of the detected solid white time current and an absolute value of the toner image formation time current is not a value in a prescribed range, the transfer bias is corrected to be reduced when the absolute value of the detected solid white time current is larger than the absolute value of the detected toner image formation time current and to be increased when the absolute value of the solid white time current is smaller than the absolute value of the toner image formation time current.
    • 要解决的问题:提供一种更可靠地抑制由于温度和湿度等的环境变化引起的图像缺陷的发生以及图像形成装置的长期变化的技术。 解决方案:当在中间转印中未形成调色剂图像的状态下,当在二次转印部分91施加某些转印偏压时,图像形成装置检测固体白色时间电流为在二次转印部分91中流动的电流 带5和当在中间转印带5中形成调色剂图像的状态下将转印偏压施加到二次转印部分91时,在二次转印部分91中流动的调色剂图像形成时间电流。当 检测到的固体白色时间电流的绝对值和调色剂图像形成时间电流的绝对值不是规定范围内的值,所以当检测到的固体白色时间电流的绝对值为 大于检测到的调色剂图像形成时间电流的绝对值,并且当固体白色时间电流的绝对值小时增加 呃比调色剂图像形成时间电流的绝对值。 版权所有(C)2013,JPO&INPIT
    • 4. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2010175975A
    • 2010-08-12
    • JP2009020234
    • 2009-01-30
    • Canon Incキヤノン株式会社
    • SEKI HIROYUKISAITO MASUAKIHIRAI MASAHIDEFUNATANI KAZUHIRO
    • G03G15/01G03G15/16
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus which has a plurality of image carriers, the image forming apparatus maintaining the image quality of a transferred image at a fixed level or above by preventing the lengthwise nonuniform transfer in a transfer section and image deterioration.
      SOLUTION: The image forming apparatus includes a plurality of transfer rollers for transferring toner images to an intermediate transfer body or a transfer material conveyed by a transfer material conveying body. In the image forming apparatus, the outside diameter of the axial middle of each of those transfer rollers is greater than the outside diameters of both its axial ends.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了提供一种具有多个图像载体的图像形成装置,图像形成装置通过防止转印部分中的纵向不均匀转印而将转印图像的图像质量保持在固定水平或更高水平 和图像劣化。 解决方案:图像形成装置包括多个转印辊,用于将调色剂图像转印到由转印材料输送体输送的中间转印体或转印材料上。 在图像形成装置中,每个转印辊的轴向中间的外径大于其两个轴向端的外径。 版权所有(C)2010,JPO&INPIT
    • 5. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2009271148A
    • 2009-11-19
    • JP2008119331
    • 2008-04-30
    • Canon Incキヤノン株式会社
    • ICHINOSE KIMITAKAHIRAI MASAHIDEFUNATANI KAZUHIROFUJIMOTO TETSUICHIROKINUGAWA TATSUYA
    • G03G15/16G03G21/00G03G21/10
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus, capable of decreasing the size of a recovering container for recovering toner which is recovered from an intermediate transfer body and a transfer material carrier, and capable of reducing replacement frequency, while suppressing reduction in the throughput.
      SOLUTION: The image forming apparatus A includes: an image carrier 1 for carrying toner; a movable intermediate transfer body 6 subjected to transfer of toner on the image carrier 1; a primary transfer means 5 for transferring toner on the image carrier to the intermediate transfer body 6; a secondary transfer means 7 for transferring toner on the intermediate transfer body 6 to a transfer paper P; a holding means 101 capable of electrostatically holding toner transferred electrostatically from the intermediate transfer body 6; and a recovering means 102 capable of recovering toner held by the holding means 101 from the holding means 101. The operation of removing toner held by the holding means 101 from the holding means 101 can be switched between a first operation, in which the toner held by the holding means 101 is recovered by the recovering means 102 and a second operation, in which toner held by the holding means 101 is transferred to the intermediate transfer body 6.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 解决的问题:提供一种图像形成装置,能够减小用于回收从中间转印体和转印材料载体回收的调色剂的回收容器的尺寸,并且能够抑制替换频率,同时抑制 吞吐量降低。 解决方案:图像形成装置A包括:用于承载调色剂的图像载体1; 在图像载体1上转印调色剂的可动中间转印体6; 用于将图像载体上的调色剂转印到中间转印体6的一次转印装置5; 用于将中间转印体6上的调色剂转印到转印纸P上的二次转印装置7; 能够静电保持从中间转印体6静电转印的调色剂的保持机构101; 以及能够从保持装置101恢复由保持装置101保持的调色剂的恢复装置102.可以在保持装置101从保持装置101保持的调色剂的操作在其中调色剂保持的第一操作 通过保持装置101由恢复装置102回收,并且其中由保持装置101保持的调色剂被转印到中间转印体6的第二操作。(C)2010年,JPO和INPIT
    • 6. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2012242516A
    • 2012-12-10
    • JP2011110849
    • 2011-05-17
    • Canon Incキヤノン株式会社
    • KUME TAKAOICHINOSE KIMITAKAYOSHIOKA MASATOHIRAI MASAHIDEKURATA MUNEHITOMINAGAWA DAISUKE
    • G03G15/16
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus that suppresses the progress of scraping of an image carrier to ensure a long life, and prevents transfer failure without impairing transfer performance.SOLUTION: An image forming apparatus includes voltage application means that changes an output before starting image formation, and current detection means that detects a current value corresponding to the output voltage of the voltage application means, and carries out transfer voltage control for setting a transfer voltage value on the basis of the result of the detection of the current detection means. The image forming apparatus determines timing for carrying out the transfer voltage control according to the integrated amount of use stored by storage means.
    • 要解决的问题:提供一种图像形成装置,其抑制图像载体的刮擦进程以确保寿命长,并且在不损害传送性能的情况下防止传送故障。 解决方案:图像形成装置包括在开始图像形成之前改变输出的电压施加装置和检测与电压施加装置的输出电压相对应的电流值的电流检测装置,并且执行用于设定的转印电压控制 基于电流检测装置的检测结果的转印电压值。 图像形成装置根据由存储装置存储的综合使用量确定进行转印电压控制的定时。 版权所有(C)2013,JPO&INPIT
    • 8. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2012123251A
    • 2012-06-28
    • JP2010274700
    • 2010-12-09
    • Canon Incキヤノン株式会社
    • HIRAI MASAHIDENAKAI TOMOAKIYAGI YASUTAKA
    • G03G15/16G03G15/01G03G21/14
    • G03G15/161G03G2215/0129G03G2215/1661
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus that provides excellent images without transfer failure with the efficient cleaning of a transfer member.SOLUTION: An image forming apparatus forms a cleaning assistant toner image on an intermediate transfer belt 6, and causes a power supply 71 to apply bias to a secondary transfer roller 7, and thereby transfers the cleaning assistant toner image formed on the intermediate transfer belt 6 to the secondary transfer roller 7. The image forming apparatus then applies cleaning bias to the secondary transfer roller 7 to move toner attached to the secondary transfer roller 7 to the intermediate transfer belt 6, and allows a cleaning device 10 of the intermediate transfer belt 6 to carry out the cleaning.
    • 要解决的问题:提供一种图像形成装置,其通过有效地清洁转印部件来提供优异的图像而不会发生转印故障。 解决方案:图像形成装置在中间转印带6上形成清洁助剂调色剂图像,并使电源71向二次转印辊7施加偏压,从而转印形成在中间转印带6上的清洁辅助调色剂图像 转印带6到二次转印辊7.图像形成装置然后对二次转印辊7施加清洁偏压,以将附着到二次转印辊7上的调色剂移动到中间转印带6,并且允许中间转印带6的清洁装置10 转印带6进行清洁。 版权所有(C)2012,JPO&INPIT