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1. 发明授权

US5678126A Filming attenuation correcting toner concentration sensor assembly and method 失效
公开(公告)号：US5678126A
公开(公告)日：1997-10-14
申请号：US720521
申请日：1996-09-30
申请人： Darrel R. Rathbun
发明人： Darrel R. Rathbun
IPC分类号： G01N21/59 , G03G15/10 , G03G15/11 , G03G21/00
CPC分类号： G03G15/105
摘要： A filming attenuation correcting toner concentration sensor assembly and method of controlling in a container, a concentration of a mixture that includes a light absorbing substance and a clear liquid carrier in solution, while correcting the effects of container filming. The method includes the steps of splitting light from a single light source having a controllable intensity, into a first light beam and a separate second light beam; focusing the first light beam through a first quantity of the mixture contained in a first light transmitting container made of a first material and having a first thickness, as well as focusing the second light beam through a second quantity of the mixture contained in a second light transmitting container made of the first material and having a second thickness greater than the first thickness of the first light transmitting container; generating a first proportional output signal by sensing with a first photodiode, a first attenuated light transmitted from the first light beam through the first light transmitting container and through the first quantity of the mixture; generating a second proportional output signal by sensing with a second photodiode, a second attenuated light transmitted from the second light beam through the second light transmitting container and through the second quantity of the mixture; maintaining the second proportional output signal at a constant level by adjusting the controllable intensity of the single light source; and adjusting the concentration of the light absorbing substance in the mixture such that a filming-effect independent ratio that is equal to the first proportional output signal divided by the second proportional output signal, is also maintained as a constant, thereby achieving a toner concentration of the mixed developer material that is maintained at a desired level, without the undesirable effects of filming of optical surfaces.

2. 发明授权

US5839035A Photomode contrast control system for an electrostatographic printing machine 失效
标题翻译：用于静电印刷机的光模式对比度控制系统
公开(公告)号：US5839035A
公开(公告)日：1998-11-17
申请号：US867549
申请日：1997-06-02
申请人： Darrel R. Rathbun
发明人： Darrel R. Rathbun
IPC分类号： G03G15/00 , G03B27/72 , G03G15/04 , G03G15/043
CPC分类号： G03G15/04027
摘要： An electrophotographic copying machine adapted to operate in either a functional or a pictorial mode, such that, in the pictorial mode, a light signal is transmitted through a line screen member to modulate an electrostatic latent image of an original document. The amount of light transmitted through the line screen is varied as a function of the amount of light used to generate the electrostatic latent image to control the contrast of the image generated thereby. As a result, pictorial image contrast is readily adjustable by regulating the light intensity of the light transmitted through the line screen member and onto the photoconductive surface for high quality pictorial copies in an electrostatographic copying machine.
摘要翻译：一种电子照相复印机，其适于以功能或图示方式操作，使得在图案模式中，光信号通过线屏幕部件传输以调制原稿的静电潜像。通过线屏幕传输的光量随着用于产生静电潜像的光量而变化，以控制由此产生的图像的对比度。结果，通过调节透过线屏幕部件的光的光强度和光电导表面上的高质量图形拷贝，可以容易地调整图形图像对比度。

3. 发明授权

US5689763A Capacitive based sensing system for use in a printing system 失效
标题翻译：用于印刷系统的基于电容的传感系统
公开(公告)号：US5689763A
公开(公告)日：1997-11-18
申请号：US715268
申请日：1996-09-16
申请人： Darrel R. Rathbun , John J. Ricciardelli , Gerald A. Domoto
发明人： Darrel R. Rathbun , John J. Ricciardelli , Gerald A. Domoto
IPC分类号： G03G15/10 , G03G15/06
CPC分类号： G03G15/104 , G03G15/101 , G03G2215/00029
摘要： A sensing system for a print development system of a printing system in which a print is developed with developer material and development of the print varies as a function of both a first parameter and a second parameter is provided. The development system includes a capacitance and the sensing system, which measures a first value varying as a function of the first parameter and a second value varying as a function of the second parameter, includes a sensing subsystem for measuring an output by reference to the capacitance; and a signal development subsystem, responsive to the sensing system, for developing, from the output, both a first signal and a second signal with the first signal corresponding to the first value and the second signal corresponding to the second value.
摘要翻译：提供了一种用于印刷系统的感光系统，其中用显影剂材料开发印刷品和印刷品的显影作为第一参数和第二参数两者的函数而变化。开发系统包括电容和感测系统，其测量作为第一参数的函数而变化的第一值和作为第二参数的函数变化的第二值，包括用于通过参考电容来测量输出的感测子系统 ; 以及响应于所述感测系统的用于从所述输出开发第一信号和第二信号的信号开发子系统，所述第一信号对应于对应于所述第二值的所述第一值和所述第二信号。

4. 发明授权

US4778980A Instant-on fuser control 失效
标题翻译：即时定影控制
公开(公告)号：US4778980A
公开(公告)日：1988-10-18
申请号：US915440
申请日：1986-10-06
申请人： Darrel R. Rathbun
发明人： Darrel R. Rathbun
IPC分类号： H05B3/00 , G03G15/20 , G05D23/24 , H05B1/02
CPC分类号： G05D23/2401 , G03G15/2003 , G03G15/2039
摘要： A fuser temperature control using a resistive bridge driven power circuit. At the beginning of each positive half cycle of the AC line voltage, the possible firing of the triac is delayed by 100 microseconds. During this delay, the fuser temperature is checked by measuring the foil heaters resistance with a DC bridge circuit. One leg of this bridge circuit contains the foil heater. The other leg of the bridge has a potentiometer to set the temperature of the fuser. The output of the bridge circuit is fed into a differential comparator and D-type flip-flop. This combination gives high gain with very little sensitivity to noise. The differential comparator checks the fuser temperature (foil resistance) relative to the set point temperature (set point potentiometer). It determines whether the fuser temperature is above or below the set point temperature. The D-type flip-flop latches this information to either enable or disable the triac triggering circuitry for each full cycle of the line voltage. When the fuser temperature is below the set point temperature, power is enabled to heat the fuser. When the fuser temperature is above the set point temperature it is disabled to cool the fuser. This power decision is made at a rate of 60 Hz in order to keep up with the fusers instant-on characteristics.
摘要翻译：使用电阻桥式驱动电源电路的定影温度控制。在AC线电压的每个正半周期的开始，三端双向可控硅开关的可能触发延迟100微秒。在此延迟期间，通过使用直流电桥电路测量箔加热器电阻来检查定影温度。该桥电路的一条腿包含箔加热器。桥的另一条腿有一个电位计来设定定影器的温度。桥式电路的输出馈入差分比较器和D型触发器。这种组合给予高增益，对噪声的灵敏度很小。差分比较器检查定影温度（箔电阻）相对于设定点温度（设定点电位计）。它确定定影温度是否高于或低于设定点温度。 D型触发器锁存该信息，以便在线电压的每个完整周期启用或禁用三端双向可控硅触发电路。当定影温度低于设定点温度时，启用电源以加热定影器。当定影温度高于设定点温度时，禁止冷却定影器。该功率决定以60Hz的速率进行，以便跟上熔断器即时特性。

5. 发明授权

US5706095A Apparatus and method for measuring percentage solids in liquid developer material 失效
标题翻译：用于测量液体显影剂材料中固体百分比的装置和方法
公开(公告)号：US5706095A
公开(公告)日：1998-01-06
申请号：US714667
申请日：1996-09-16
申请人： Darrel R. Rathbun
发明人： Darrel R. Rathbun
IPC分类号： G01B11/06 , G01N21/47
CPC分类号： G01B11/0683
摘要： A system for measuring a percentage of the solids in a liquid developer material is provided. The liquid developer material is received by a liquid developer material application member for application of the liquid developer material to a selected surface. The liquid developer material, when disposed on the developer application member as a film, is characterized by a first value varying as a function of developed mass per unit area (DMA) and a second value varying as a function of film thickness. The measuring system includes: a first sensing system for determining a magnitude corresponding with the first value; a second sensing system for determining a magnitude corresponding with the second value; and a controller, responsive to the first and second sensing systems, for determining the percentage of the solids in the liquid developer material with the determined first and second values.
摘要翻译：提供了用于测量液体显影剂材料中固体的百分比的系统。液体显影剂材料由用于将液体显影剂材料施加到选定表面的液体显影剂材料施加构件接收。液体显影剂材料当作为膜设置在显影剂施加构件上时，其特征在于作为每单位面积的显影质量（DMA）的函数变化的第一值和作为膜厚度的函数变化的第二值。测量系统包括：第一感测系统，用于确定对应于第一值的幅度; 第二感测系统，用于确定对应于第二值的幅度; 以及响应于第一和第二感测系统的控制器，用于利用所确定的第一和第二值确定液体显影剂材料中固体的百分比。

6. 发明授权

US5166729A Toner concentration sensing apparatus 失效
标题翻译：调色剂浓度检测装置
公开(公告)号：US5166729A
公开(公告)日：1992-11-24
申请号：US753144
申请日：1991-08-30
申请人： Darrel R. Rathbun , Michael D. Borton , John Buranicz
发明人： Darrel R. Rathbun , Michael D. Borton , John Buranicz
IPC分类号： G01N27/60 , G01N27/72 , G03G15/08
CPC分类号： G03G15/0853
摘要： In accordance with the present invention an apparatus is provided for use with a developer container adapted to retain a quantity of developer material, the developer material including varying concentrations of magnetic carrier material and toner material. The toner concentration sensing apparatus comprises a device for generating a magnetic field within the developer container. The apparatus further comprises a device for controlling the generating device to selectively generate the magnetic field within the developer container, wherein a preselected portion of the developer material is compressed by the magnetic field and a signal is generated across the generating device, the signal across the generating device varying as a function of the concentration of the toner.
摘要翻译：根据本发明，提供了一种用于与适于保持一定数量的显影剂材料的显影剂容器一起使用的装置，显影剂材料包括不同浓度的磁性载体材料和调色剂材料。调色剂浓度感测装置包括用于在显影剂容器内产生磁场的装置。所述装置还包括用于控制所述发生装置以选择性地在所述显影剂容器内产生磁场的装置，其中所述显影剂材料的预选部分被所述磁场压缩并且在所述生成装置两端产生信号，根据调色剂的浓度变化的发生装置。

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