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    • 1. 发明申请
    • Image fixing apparatus
    • 图像定影装置
    • US20050041991A1
    • 2005-02-24
    • US10896939
    • 2004-07-23
    • Hirofumi IharaTomoyuki NoguchiYasuhiro NonakaTadayuki KajiwaraMasahiro SameiHideki Tatematsu
    • Hirofumi IharaTomoyuki NoguchiYasuhiro NonakaTadayuki KajiwaraMasahiro SameiHideki Tatematsu
    • G03G15/20
    • G03G15/2039G03G2215/2016G03G2215/2032
    • A heat generating member for fixing a toner image onto a recording medium, an induction heating means arranged to oppose to the heat generating member, for generating heat in the heat generating member by electromagnetic induction, an inverter circuit for driving the induction heating means, a power controlling means for controlling a power value that is output from the inverter circuit, a power-value calculating means for calculating the power value, a power-value sensing means for acquiring the power value output from the power controlling means, and a temperature sensing means for sensing a temperature at least at one point of the heat generating member are provided, and thus either the power value sensed by the power-value sensing means or a temperature value sensed by the temperature sensing means is used as a reference value used to calculate the power value by the power-value calculating means. Therefore, the image fixing device can be controlled with the high reliability.
    • 一种用于将调色剂图像定影到记录介质上的发热部件,与发热部件相对的感应加热部件,用于通过电磁感应产生发热部件的热量;驱动感应加热机构的逆变器电路; 用于控制从逆变器电路输出的功率值的功率控制装置,用于计算功率值的功率值计算装置,用于获取从功率控制装置输出的功率值的功率值感测装置和温度感测 提供用于感测至少在发热元件的一个点处的温度的装置,因此由功率值检测装置检测到的功率值或由温度感测装置感测的温度值被用作用于 通过功率值计算装置计算功率值。 因此,可以高可靠性地控制图像定影装置。
    • 4. 发明申请
    • Image heating
    • 图像加热
    • US20070036570A1
    • 2007-02-15
    • US10554945
    • 2005-03-07
    • Hideki TatematsuHirofumi IharaTadafumi ShimizuMasahiro SameiKeiichi MatsuzakiTomoyuki Noguchi
    • Hideki TatematsuHirofumi IharaTadafumi ShimizuMasahiro SameiKeiichi MatsuzakiTomoyuki Noguchi
    • G03G15/20
    • G03G15/205G03G2215/2016G03G2215/2032G03G2215/2045
    • An image heating apparatus is provided that enables the temperature of an image heating element to be maintained stably at a target temperature even when the fixing speed varies, and that enables lower cost and higher efficiency to be achieved. In this apparatus, with a calorific value control section 300 of a fixing apparatus 200, temperature control computation is not varied according to the rotational speed of a fixing belt 230, but it is determined whether a PID control computation result is in a range that allows temperature control with one IGBT, linear control is performed if the result is greater than or equal to the minimum power obtained as IH output, and PWM control is performed at minimum power if power less than or equal to the minimum power is required. It is thus not necessary for the computation method of a supply power computation section 301 to be switched according to the fixing speed, and the calorific value of fixing belt 230 can be controlled with one computation method. Therefore, the supply power to the heat source of fixing belt 230 can be PID-controlled by only one switching element (IGBT), lower cost and higher efficiency can be achieved, and the temperature of fixing belt 230 can be maintained stably at the target temperature.
    • 提供一种图像加热装置,即使在定影速度变化时也能使图像加热元件的温度稳定地保持在目标温度,并且能够实现更低的成本和更高的效率。 在该装置中,利用定影装置200的发热量控制部300,根据定影带230的旋转速度不进行温度控制计算,而是判断PID控制计算结果是否在允许的范围内 如果结果大于或等于作为IH输出获得的最小功率,则执行一个IGBT的线性控制,如果需要功率小于或等于最小功率,则以最小功率执行PWM控制。 因此,不需要根据定影速度切换供电电力计算部301的计算方法,并且可以通过一种计算方法来控制定影带230的发热量。 因此,可以通过仅一个开关元件(IGBT)对定影带230的热源的供电进行PID控制,可以实现更低的成本,更高的效率,并且可以在目标上稳定地保持定影带230的温度 温度。
    • 7. 发明授权
    • Image heating apparatus including PID control
    • 图像加热装置包括PID控制
    • US07349642B2
    • 2008-03-25
    • US11073717
    • 2005-03-08
    • Hideki TatematsuMasahiro SameiTomoyuki NoguchiShigemitsu Tani
    • Hideki TatematsuMasahiro SameiTomoyuki NoguchiShigemitsu Tani
    • G03G15/20
    • G03G15/205G03G2215/2032H05B6/06H05B6/145
    • PID control performs integral control using an integral value of a deviation between a set temperature and current temperature. In particular, when a proportionality factor Kp is large, a fixing belt reaches a target temperature quickly but overshoot increases. On the other hand, when the proportionality factor Kp is small, the output is reduced gradually, and therefore the fixing belt reaches a target temperature slowly but the overshoot is small. Thus, a heat value control section changes the control value of the PID control according to the temperature (belt temperature) of a fixing belt at the start of heating as detected by a temperature detector. More specifically, a proportionality factor Kp of a calculation expression of the PID calculation is changed according to the belt temperature of the fixing belt. This makes it possible to reduce an overshoot when the temperature of the fixing belt increases.
    • PID控制使用设定温度和当前温度之间的偏差的积分值来执行积分控制。 特别地,当比例因子Kp较大时,定影带快速达到目标温度但过冲增加。 另一方面,当比例因子Kp小时,输出逐渐减小,因此定影带缓慢达到目标温度,但过冲小。 因此,热值控制部根据由温度检测器检测到的加热开始时的定影带的温度(带温度)来改变PID控制的控制值。 更具体地,PID计算的计算表达式的比例因子Kp根据定影带的带温度而改变。 这使得当定影带的温度升高时可以减小过冲。
    • 8. 发明申请
    • Image heating apparatus
    • 图像加热装置
    • US20050201768A1
    • 2005-09-15
    • US11073717
    • 2005-03-08
    • Hideki TatematsuMasahiro SameiTomoyuki NoguchiShigemitsu Tani
    • Hideki TatematsuMasahiro SameiTomoyuki NoguchiShigemitsu Tani
    • G03G15/20H05B6/14
    • G03G15/205G03G2215/2032H05B6/06H05B6/145
    • PID control performs integral control using an integral value of a deviation between a set temperature and current temperature, and therefore when a proportionality factor Kp is large, a fixing belt 230 reaches a target temperature quickly but a subsequent overshoot increases. On the other hand, when the proportionality factor Kp is small, the output is reduced gradually, and therefore the fixing belt 230 reaches a target temperature slowly but the overshoot is small. Thus, a heat value control section 300 changes the control value of the PID control according to the temperature (belt temperature) a fixing belt 230 at the start of heating of detected by a temperature detector 270. More specifically, a proportionality factor Kp of a calculation expression of the PID calculation is changed according to the belt temperature of the fixing belt 230. This makes it possible to reduce an overshoot when the temperature of the fixing belt 230 increases.
    • PID控制使用设定温度和当前温度之间的偏差的积分值进行积分控制,因此当比例因子Kp大时,定影带230快速达到目标温度,但随后的过冲增加。 另一方面,当比例因子Kp小时,输出逐渐减小,因此定影带230缓慢地达到目标温度,但过冲较小。 因此,热值控制部300根据由温度检测器270检测到的加热开始时的定影带230,根据温度(带温度)来改变PID控制的控制值。 更具体地,PID计算的计算表达式的比例因子Kp根据定影带230的带温度而改变。 这使得当定影带230的温度升高时可以减小过冲。
    • 9. 发明申请
    • Fixing device
    • 固定装置
    • US20060133864A1
    • 2006-06-22
    • US10543190
    • 2005-01-11
    • Hideki TatematsuTadafumi ShimizuMasahiro SameiKeiichi MatsuzakiKazunori MatsuoShoichi Kitagawa
    • Hideki TatematsuTadafumi ShimizuMasahiro SameiKeiichi MatsuzakiKazunori MatsuoShoichi Kitagawa
    • G03G15/20
    • G03G15/2028
    • A fixing apparatus is provided that enables a recording medium that has undergone heat-fixing to be separated smoothly from a heating medium without causing a sheet jam or image disturbance. In this apparatus, there are provided on the guide surface of a separator two step parts raised along the guide surface guide width direction. Recording paper is transported gripped by a fixing nip, is guided so as to come into contact with only the apex parts of step parts, and is separated from the surface of a fixing belt. Thus, a gap is formed between the guide surface and the heat-fixing surface of recording paper guided along the guide surface, the contact area between the heat-fixing surface of recording paper and the guide surface decreases, the heat-fixing surface of recording paper becomes less prone to adhere to the guide surface of the separator, and recording paper is smoothly separated from the fixing belt without causing a sheet jam or image disturbance.
    • 提供了一种定影装置,其使已经经历了热定影的记录介质能够与加热介质平滑地分离,而不会造成卡纸或图像干扰。 在该装置中,在分离器的引导面上设置有沿着引导面引导宽度方向升高的两个台阶部。 记录纸被定影夹持物传送,被引导以仅与台阶部的顶点接触,并与定影带的表面分离。 因此,在引导面与引导面引导的记录纸的热定影面之间形成有间隙,记录纸的热固定面与引导面之间的接触面积减小,记录的热固定面 纸张不易粘附到分离器的引导表面,并且记录纸从定影带平滑地分离而不会造成卡纸或图像干扰。