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    • 23. 发明专利
    • 定着装置及び画像形成装置
    • 固定装置和图像形成装置
    • JP2014235308A
    • 2014-12-15
    • JP2013116517
    • 2013-05-31
    • 株式会社リコーRicoh Co Ltd
    • ARAI YUJISEKI TAKAYUKIMINBU RYUICHITAMAKI SHUNTAROSHIMOKAWA TOSHIHIKOIKEFUCHI YUTAKAYUASA SHUTAROSAITO KAZUYAYOSHINAGA HIROSHI
    • G03G15/20
    • G03G15/2017G03G15/2053G03G15/2064G03G15/2089G03G2215/2016G03G2215/2032G03G2215/2035
    • 【課題】遮蔽部材の温度が上がり過ぎて変形するのを抑制できる定着装置、及び、その定着装置を備えた画像形成装置を提供する。【解決手段】内部が中空の表面無端移動体121と、表面無端移動体の外周面と当接する加圧部材122と、表面無端移動体の内周側に配置され表面無端移動体を介して加圧部材と当接してニップ部を形成するニップ形成部材24と、表面無端移動体の内周側に配置され表面無端移動体を輻射熱により加熱する熱源23とを備え、ニップ部に記録材Pを通過させて画像を記録材に定着させる定着装置100において、熱源と表面無端移動体との間に、熱源から表面無端移動体の非通紙幅領域への輻射熱を遮蔽する遮蔽位置と、遮蔽位置から退避した退避位置との間で移動可能な遮蔽部材29を複数設けており、各遮蔽部材の動作を制御する制御手段を有する。【選択図】図1
    • 要解决的问题:提供一种可以抑制由于温度过高引起的屏蔽构件的变形的定影装置和包括定影装置的图像形成装置。解决方案:定影装置100包括中空表面无端移动体121 与表面循环移动体的外周面接触的压力部件122,配置在表面环状移动体的内周侧并与压力部件抵接的辊隙形成部件24, 所述表面无端移动体插入其间以形成夹持部,以及热源23,其布置在所述表面无端移动体的内周侧,并且通过辐射热加热所述表面无限远移动体,并且通过所述记录材料P 夹持部分以将图像固定在记录材料上。 定影装置100还设置有多个屏蔽构件29,其可以在遮蔽来自热源的辐射热的屏蔽位置与表面无端移动体的非纸宽度区域之间移动,并且退避位置从 屏蔽位置,并且具有用于控制屏蔽构件的操作的控制装置。
    • 26. 发明专利
    • Pressing member for fixing and method for manufacturing the same
    • 用于固定的压力构件及其制造方法
    • JP2013218175A
    • 2013-10-24
    • JP2012089635
    • 2012-04-10
    • Nok CorpNok株式会社Synztec Co Ltdシンジーテック株式会社
    • NISHIDA AKIRASUGIYAMA SHINGO
    • G03G15/20
    • G03G15/2089G03G15/2053G03G15/206G03G2215/2035
    • PROBLEM TO BE SOLVED: To provide a pressing member for fixing simplifying a manufacturing process by simplifying a structure, causing no trouble due to continuous use and having high durability, and a method for manufacturing the same.SOLUTION: A pressing member 10 for fixing that is used for a fixing part of a fixing device includes: a sliding sheet 11 forming a sliding surface that slides with an inner peripheral surface of a belt of the fixing part; and an elastic member 12 provided inside the sliding sheet. The sliding sheet is formed of a resin-fiber fabric, a resin-fiber knitted fabric, a resin nonwoven fabric, or a resin film. The elastic member is integrally molded with the sliding sheet such that, at least inside the sliding surface, the elastic member is joined with the sliding sheet by the integral molding. The sliding surface is formed into an uneven surface by an unevenness forming process.
    • 要解决的问题:提供一种用于固定的按压部件,通过简化结构简化结构,不会由于连续使用而导致无故障并且具有高耐久性及其制造方法。解决方案:一种用于固定 用于定影装置的固定部分包括:滑动片11,形成滑动表面,该滑动表面与固定部分的皮带的内周表面滑动; 以及设置在滑动片内的弹性部件12。 滑动片由树脂纤维织物,树脂纤维针织物,树脂无纺布或树脂膜形成。 弹性构件与滑动片一体地模制,使得至少在滑动表面内部,弹性构件通过一体成型与滑动片接合。 滑动面通过凹凸形成工序形成为不平坦的表面。
    • 27. 发明专利
    • Fixing device
    • 固定装置
    • JP2013156501A
    • 2013-08-15
    • JP2012018022
    • 2012-01-31
    • Brother Ind Ltdブラザー工業株式会社
    • SUZUKI NOBORUISHIDA KEIMATSUNO TAKUSHI
    • G03G15/20
    • G03G15/2089G03G15/2017G03G15/2028G03G15/2053G03G15/206G03G15/2085G03G2215/2035
    • PROBLEM TO BE SOLVED: To provide a fixing device capable of reducing that a recording sheet is wrinkled while maintaining a cylindrical member at a straight state in fixation.SOLUTION: A fixing device is the one for performing thermal fixation of a developer image transferred on a recording sheet, and includes: a flexible cylindrical member; a heater disposed inside the cylindrical member; a nip plate 130 which is in slide contact with the inner peripheral surface of the cylindrical member, and is heated by the heater; and a pressure roller 150 (backup roller) which sandwiches the cylindrical member between the pressure roller 150 and the nip plate 130. The nip plate 130 curves so that the center part in the axis direction of the cylindrical member is separated from the pressure roller 150 farther than at both ends at least in fixation. The pressure roller 150 is a concave roller in which a diameter of the center part in the axis direction is smaller than diameters of both the ends.
    • 要解决的问题:提供一种定影装置,其能够在保持圆柱形构件在固定时处于直线状态的同时减小记录片材起皱。解决方案:定影装置是用于进行在 记录纸,并且包括:柔性圆柱形构件; 设置在所述筒状构件内的加热器; 与圆柱形构件的内周表面滑动接触并被加热器加热的夹持板130; 以及压缩辊150(支撑辊),其将圆筒形构件夹在加压辊150和夹持板130之间。夹持板130弯曲,使得圆柱形构件的轴向方向上的中心部分与加压辊150分离 至少在固定时比两端更远。 加压辊150是中心部在轴向上的直径小于两端的直径的凹辊。
    • 28. 发明专利
    • Lever switching device, a fixing device, and an image forming apparatus
    • 杠杆开关装置,固定装置和图像形成装置
    • JP2013011686A
    • 2013-01-17
    • JP2011143300
    • 2011-06-28
    • Ricoh Co Ltd株式会社リコー
    • IKEDA TAMOTSUSAKATANI KOTATAKAHASHI YOSHIHARUHIRAOKA TSUTOMU
    • G03G15/20G03G15/00
    • G03G15/2089G03G15/2032G03G15/206
    • PROBLEM TO BE SOLVED: To provide a lever switching device that alleviates the impact of return of a lever to suppress the occurrence of impact noise, a fixing device, and an image forming apparatus.SOLUTION: A lever switching device is attached to a structure including a first member 46, a second member 47, and an elastic member that is urged in the direction to press-contact the first member 46 and the second member 47. The first member 46 and the second member 47 can be switched between a low press-contact state and a high press-contact state through operation of a lever 50. An operator swings the lever 50 in the direction to switch from the low press-contact state to the high press-contact state; the lever switching device includes resistance providing means that provides resistance to the swing.
    • 要解决的问题:提供一种减轻杠杆返回的冲击以抑制冲击噪声的发生的杠杆开关装置,定影装置和图像形成装置。 解决方案:杆切换装置安装在包括第一构件46,第二构件47以及沿与第一构件46和第二构件47按压接触的方向被推动的弹性构件的结构上。 第一构件46和第二构件47可以通过杆50的操作在低压接触状态和高压接触状态之间切换。操作者在从低压接触状态切换的方向上摆动杆50 到高压接触状态; 杠杆开关装置包括提供对摆动的阻力的电阻提供装置。 版权所有(C)2013,JPO&INPIT