Temperature control of thermal inkjet printheads by using synchronous
non-nucleating pulses
    1.
    发明授权
    Temperature control of thermal inkjet printheads by using synchronous non-nucleating pulses 失效
    使用同步非成核脉冲对热喷墨打印头进行温度控制

    公开(公告)号:US5736995A

    公开(公告)日:1998-04-07

    申请号:US520225

    申请日:1995-08-28

    IPC分类号: B41J2/05

    摘要: A technique for controlling print quality in an inkjet printer by delivering synchronized heating, non-printing pulses and printing pulses to the ink firing resistors during print firing operations such as during the printing of a swath. A temperature of the printhead substrate is measured and compared against a reference temperature during printing operations. If the measured temperature is below the reference temperature, then the printhead substrate is heated during the printing operations to bring the substrate up to the reference temperature. The heating is done by delivering synchronized heating non-printing pulses and printing pulses to the ink firing resistors during selected print firing periods, wherein either the heating pulses or the printing pulses, but not both, occur during a selected print firing period. The heating pulses are logically OR-ed with the printing pulses to achieve the synchronization.

    摘要翻译: 一种用于通过在诸如在打印条带期间的打印操作期间通过将同步加热,非打印脉冲和打印脉冲传送到喷墨电阻器来控制喷墨打印机中的打印质量的技术。 在打印操作期间测量打印头基板的温度并与参考温度进行比较。 如果测量的温度低于参考温度,则打印头基板在打印操作期间被加热,以使基板达到参考温度。 加热是通过在所选择的打印发射周期期间将同步的加热非打印脉冲和打印脉冲递送到喷墨电阻器来完成的,其中加热脉冲或打印脉冲,而不是两者都在选定的打印发射周期期间发生。 加热脉冲与打印脉冲进行逻辑或运算,以实现同步。

    Thermal inkjet printhead warming circuit
    3.
    发明授权
    Thermal inkjet printhead warming circuit 失效
    热喷墨打印头加热电路

    公开(公告)号:US5992979A

    公开(公告)日:1999-11-30

    申请号:US99119

    申请日:1998-06-17

    IPC分类号: B41J2/05 B41J2/14

    摘要: For each printhead nozzle, nozzle circuitry includes a warming transistor, drive transistor and heating resistor. To maintain a threshold temperature at the printhead, a warming pulse is sent from the warming transistor to the heating resistor of one or more nozzles when the temperature falls below a prescribed temperature. To fire a nozzle a firing pulse is output from the drive transistor to the heating resistor. The warming transistor is laid out as a segmented portion of the drive transistor layout area. No layout penalty is incurred by including the warming transistor for each nozzle. The source of a warming transistor is coupled in common to the source of a drive transistor. The drain of the warming transistor is coupled in common to the drain of the drive transistor. The gates are separate. The gates receive respective warming or firing control signals. The drains are coupled to the heating resistor.

    摘要翻译: 对于每个打印头喷嘴,喷嘴电路包括加温晶体管,驱动晶体管和加热电阻器。 为了保持打印头的阈值温度,当温度低于规定温度时,加温脉冲从加温晶体管发送到一个或多个喷嘴的加热电阻器。 为了点燃喷嘴,从驱动晶体管向发热电阻器输出点火脉冲。 加热晶体管布置为驱动晶体管布局区域的分段部分。 通过包括每个喷嘴的加温晶体管不会造成布局损失。 加温晶体管的源极共同连接到驱动晶体管的源极。 加热晶体管的漏极共同耦合到驱动晶体管的漏极。 门是分开的。 门接收各自的升温或点火控制信号。 排水管连接到加热电阻器。

    Self-calibration of power delivery control to firing resistors
    4.
    发明授权
    Self-calibration of power delivery control to firing resistors 有权
    自动校准功率发射控制到点火电阻

    公开(公告)号:US07032986B2

    公开(公告)日:2006-04-25

    申请号:US10712112

    申请日:2003-11-13

    IPC分类号: B41J29/38

    摘要: A fluid ejection device having an internal power supply path and a power regulator providing an offset voltage from the internal power supply path voltage. A self-calibration circuit in the inkjet printhead determines a regulation band of the power regulator defined by a lower set point offset voltage and an upper set point offset voltage. The inkjet printhead includes a group of nozzles, a corresponding group of firing resistors, and a corresponding group of switches controllable to couple a selected firing resistor of the group of firing resistors between the internal power supply path and the offset voltage to thereby permit electrical current to pass through the selected firing resistor to cause a corresponding selected nozzle to fire.

    摘要翻译: 具有内部电源路径的流体喷射装置和提供来自内部电源路径电压的偏移电压的功率调节器。 喷墨打印头中的自校准电路确定由较低设定点偏移电压和较高设定点偏移电压定义的功率调节器的调节频带。 喷墨打印头包括一组喷嘴,相应的一组点火电阻器,以及相应的一组开关,其可控制以在内部电源路径和偏移电压之间耦合所述一组点火电阻器的选定的点火电阻,从而允许电流 通过选定的点火电阻器使相应的选定喷嘴开火。

    Power switching transistor and method of manufacture for a fluid ejection device
    5.
    发明授权
    Power switching transistor and method of manufacture for a fluid ejection device 失效
    一种用于流体喷射装置的功率开关晶体管及其制造方法

    公开(公告)号:US06800497B2

    公开(公告)日:2004-10-05

    申请号:US10135600

    申请日:2002-04-30

    IPC分类号: H01L2100

    摘要: A method of manufacturing a power switching transistor for a fluid ejection device includes forming a first conductivity type region and a first diffused region within the first conductivity type region. The first diffused region has a first conductivity type and has a greater impurity concentration than the first conductivity type region. A gate is formed and is defined to have a thin oxide region and a thick oxide region. The thick oxide region and a first portion of the thin oxide region are disposed over the first conductivity type region and the thin oxide region is at a defined distance from the first diffused region.

    摘要翻译: 一种制造用于流体喷射装置的功率开关晶体管的方法包括在第一导电类型区域内形成第一导电类型区域和第一扩散区域。 第一扩散区域具有第一导电类型并且具有比第一导电类型区域更大的杂质浓度。 形成栅极并将其限定为具有薄的氧化物区域和厚的氧化物区域。 厚氧化物区域和薄氧化物区域的第一部分设置在第一导电类型区域上方,并且薄氧化物区域距离第一扩散区域确定的距离。

    Self-calibration of power delivery control to firing resistors
    7.
    发明授权
    Self-calibration of power delivery control to firing resistors 有权
    自动校准功率发射控制到点火电阻

    公开(公告)号:US06729707B2

    公开(公告)日:2004-05-04

    申请号:US10135736

    申请日:2002-04-30

    IPC分类号: B41J2938

    摘要: A fluid ejection device having an internal power supply path and a power regulator providing an offset voltage from the internal power supply path voltage. A self-calibration circuit in the inkjet printhead determines a regulation band of the power regulator defined by a lower set point offset voltage and an upper set point offset voltage. The inkjet printhead includes a group of nozzles, a corresponding group of firing resistors, and a corresponding group of switches controllable to couple a selected firing resistor of the group of firing resistors between the internal power supply path and the offset voltage to thereby permit electrical currant to pass through the selected firing resistor to cause a corresponding selected nozzle to fire.

    摘要翻译: 具有内部电源路径的流体喷射装置和提供来自内部电源路径电压的偏移电压的功率调节器。 喷墨打印头中的自校准电路确定由较低设定点偏移电压和较高设定点偏移电压定义的功率调节器的调节频带。 喷墨打印头包括一组喷嘴,相应的一组点火电阻器,以及相应的开关组,其可控制以在内部电源路径和偏移电压之间耦合所述一组点火电阻器的选定的点火电阻,从而允许电凝浆剂 通过选定的点火电阻器使相应的选定喷嘴开火。

    Thermal ink jet print head and temperature control apparatus and method
    8.
    发明授权
    Thermal ink jet print head and temperature control apparatus and method 有权
    热喷墨打印头和温度控制装置及方法

    公开(公告)号:US06231154B1

    公开(公告)日:2001-05-15

    申请号:US09651205

    申请日:2000-08-30

    IPC分类号: B41J2938

    摘要: A thermal ink jet print head with numerous firing elements on a die, and a temperature sensor on the die with a sensor voltage output proportional to a sensed temperature. A digital to analog converter has a digital input and an output voltage proportional to the value of a digital word received by the digital input, and a comparator has a first input connected to the sensor voltage output and a second input connected to the converter voltage output. The comparator generates an equivalency signal when the converter output voltage exceeds the sensor output voltage. The print head may have a temperature controller that compares the digital word to a preselected temperature threshold value to determine if the temperature is within a selected range, and which changes the temperature of the die in response to a determination that the temperature is outside of the selected range.

    摘要翻译: 具有在模具上的许多点火元件的热喷墨打印头和模具上的温度传感器,其传感器电压输出与感测温度成比例。 数模转换器具有与数字输入接收的数字字的值成比例的数字输入和输出电压,比较器具有连接到传感器电压输出的第一输入端和连接到转换器电压输出的第二输入端 。 当转换器输出电压超过传感器输出电压时,比较器产生等效信号。 打印头可以具有温度控制器,该温度控制器将数字字与预选的温度阈值进行比较,以确定温度是否在选定范围内,并且响应于确定温度在 选择范围。

    Thermal ink jet print head and printer temperature control apparatus and
method
    9.
    发明授权
    Thermal ink jet print head and printer temperature control apparatus and method 失效
    热喷墨打印头和打印机温度控制装置及方法

    公开(公告)号:US6154229A

    公开(公告)日:2000-11-28

    申请号:US959639

    申请日:1997-10-28

    IPC分类号: B41J2/05 B41J29/38

    摘要: A thermal ink jet print head with numerous firing elements on a die, and a temperature sensor on the die with a sensor voltage output proportional to a sensed temperature. A digital to analog converter has a digital input and an output voltage proportional to the value of a digital word received by the digital input, and a comparator has a first input connected to the sensor voltage output and a second input connected to the converter voltage output. The comparator generates an equivalency signal when the converter output voltage exceeds the sensor output voltage. The print head may have a temperature controller that compares the digital word to a preselected temperature threshold value to determine if the temperature is within a selected range, and which changes the temperature of the die in response to a determination that the temperature is outside of the selected range.

    摘要翻译: 具有在模具上的许多点火元件的热喷墨打印头和模具上的温度传感器,其传感器电压输出与感测温度成比例。 数模转换器具有与数字输入接收的数字字的值成比例的数字输入和输出电压,比较器具有连接到传感器电压输出的第一输入端和连接到转换器电压输出的第二输入端 。 当转换器输出电压超过传感器输出电压时,比较器产生等效信号。 打印头可以具有温度控制器,该温度控制器将数字字与预选的温度阈值进行比较,以确定温度是否在选定范围内,并且响应于确定温度在 选择范围。

    Thermal inkjet printhead warming circuit

    公开(公告)号:US5815180A

    公开(公告)日:1998-09-29

    申请号:US819126

    申请日:1997-03-17

    IPC分类号: B41J2/05 B41J2/14

    摘要: For each printhead nozzle, nozzle circuitry includes a warming transistor, drive transistor and heating resistor. To maintain a threshold temperature at the printhead, a warming pulse is sent from the warming transistor to the heating resistor of one or more nozzles when the temperature falls below a prescribed temperature. To fire a nozzle a firing pulse is output from the drive transistor to the heating resistor. The warming transistor is laid out as a segmented portion of the drive transistor layout area. No layout penalty is incurred by including the warming transistor for each nozzle. The source of a warming transistor is coupled in common to the source of a drive transistor. The drain of the warming transistor is coupled in common to the drain of the drive transistor. The gates are separate. The gates receive respective warming or firing control signals. The drains are coupled to the heating resistor.