公开(公告)号：EP0300823B1

公开(公告)日：1995-04-05

申请号：EP88306784.5

申请日：1988-07-22

申请人： Hewlett-Packard Company

发明人： Majette, Mark W. ,  Wickeraad, John A. ,  Walsh, William J.

IPC分类号： G05B19/418 ,  G05B19/23

CPC分类号： G05B19/231 ,  B41J19/202 ,  G01D5/2457 ,  G05B2219/37153 ,  G05B2219/37296 ,  G05B2219/42118 ,  G05B2219/42237 ,  G05B2219/43008 ,  G05B2219/45187 ,  G06K15/22

公开(公告)号：EP0300634B1

公开(公告)日：1992-04-29

申请号：EP88306130.1

申请日：1988-07-06

申请人： Hewlett-Packard Company

发明人： Smith, James C. ,  Mostafa, Hatem E. ,  Walsh, William J.

IPC分类号： B41J2/005

CPC分类号： B41J2/04515 ,  B41J2/04528 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04596 ,  B41J2/04598

公开(公告)号：EP0300634A1

公开(公告)日：1989-01-25

申请号：EP88306130.1

申请日：1988-07-06

申请人： Hewlett-Packard Company

发明人： Smith, James C. ,  Mostafa, Hatem E. ,  Walsh, William J.

IPC分类号： B41J2/005

CPC分类号： B41J2/04515 ,  B41J2/04528 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04596 ,  B41J2/04598

摘要： Thermal inkjet printhead temperature control is provided in a temperature control system responsive to printhead temperature, which in the presence of printhead overheating selectively causes the printhead to stand idle, or, if multiple nozzles are available, shifts to a nozzle which is not overheated, which in the event a nozzle is unused for some time and the dye transport agent may have evaporated leaving a viscous plug in the nozzle employs warm up pulsing and/or nozzle spitting to clear the nozzles, and which when the temperature of the nozzle is below acceptable printing temperatures, nozzle pulsing for warm up and/or nozzle spitting to clear the nozzles, all such decisions and actions being provided in advance of beginning a printing operation.

摘要翻译： 热敏喷墨打印头温度控制在温度控制系统中提供，其响应于打印头温度，其在打印头过热的情况下选择性地使打印头怠速，或者如果多个喷嘴可用，则转移到不过热的喷嘴， 在喷嘴未使用一段时间并且染料运输剂可能已经蒸发而在喷嘴中留下粘性塞时，采用预热脉冲和/或喷嘴喷出以清除喷嘴，以及当喷嘴的温度低于可接受时 打印温度，用于预热和/或喷嘴喷射的喷嘴脉冲以清除喷嘴，所有这些决定和动作在开始打印操作之前提供。

公开(公告)号：EP0622209B1

公开(公告)日：1999-08-25

申请号：EP94106002.2

申请日：1994-04-18

申请人： Hewlett-Packard Company

发明人： Canfield, Brian ,  Mebane, Janet E. ,  Walsh, William J. ,  Xu, Yinan

IPC分类号： B41J2/175 ,  B41J2/19

CPC分类号： B41J2/19

公开(公告)号：EP0622209A3

公开(公告)日：1995-02-22

申请号：EP94106002.2

申请日：1994-04-18

申请人： Hewlett-Packard Company

发明人： Canfield, Brian ,  Mebane, Janet E. ,  Walsh, William J. ,  Xu, Yinan

IPC分类号： B41J2/175 ,  B41J2/19

CPC分类号： B41J2/19

摘要： An intrusion of air (22) into the ink chambers (24) of a printhead substrate (50) is a symptom of either a depleted ink supply (26) or a deprimed printhead substrate (50). When the printer (20) attempts to print with a depleted ink supply (30) or a deprimed printhead substrate (50), the printhead substrate (50) must absorb all of the energy dissipated in the ink chambers (24) to eject the drops. This causes the printhead substrate (50) to reach high temperatures. The present invention detects a depleted ink supply (26) and a deprimed printhead (50) by monitoring the temperature of the printhead substrate (50) and comparing this temperature with a threshold (84, 90, 96). When this temperature exceeds the threshold (84, 90, 96) for more than an allotted amount of time, then corrective action is taken.

摘要翻译： 基板到空气（22）的侵入的打印头（50）的墨室（24）可以是一个耗尽的墨源（26）或一个打印头deprimed基板（50）的症状。 当打印机（20）尝试与耗尽的墨源（30）或一个deprimed打印头基板（50）进行打印，所述打印头基板（50）必须吸收所有在墨室消散（24）的能量的喷射的液滴 ， 这使得打印头基片（50），以达到高的温度。 本发明检测通过监测打印头基板的温度（50）和该温度与阈值（84，90，96）进行比较的耗尽墨源（26）和打印头deprimed（50）。 当该温度超过比的时间分配量多的阈值（84，90，96），则采取校正动作。

公开(公告)号：EP0622209A2

公开(公告)日：1994-11-02

申请号：EP94106002.2

申请日：1994-04-18

申请人： Hewlett-Packard Company

发明人： Canfield, Brian ,  Mebane, Janet E. ,  Walsh, William J. ,  Xu, Yinan

IPC分类号： B41J2/175 ,  B41J2/19

CPC分类号： B41J2/19

摘要： An intrusion of air (22) into the ink chambers (24) of a printhead substrate (50) is a symptom of either a depleted ink supply (26) or a deprimed printhead substrate (50). When the printer (20) attempts to print with a depleted ink supply (30) or a deprimed printhead substrate (50), the printhead substrate (50) must absorb all of the energy dissipated in the ink chambers (24) to eject the drops. This causes the printhead substrate (50) to reach high temperatures. The present invention detects a depleted ink supply (26) and a deprimed printhead (50) by monitoring the temperature of the printhead substrate (50) and comparing this temperature with a threshold (84, 90, 96). When this temperature exceeds the threshold (84, 90, 96) for more than an allotted amount of time, then corrective action is taken.

公开(公告)号：EP0300823A3

公开(公告)日：1990-04-25

申请号：EP88306784.5

申请日：1988-07-22

申请人： Hewlett-Packard Company

发明人： Majette, Mark W. ,  Wickeraad, John A. ,  Walsh, William J.

IPC分类号： G05B19/418 ,  G05B19/23

CPC分类号： G05B19/231 ,  B41J19/202 ,  G01D5/2457 ,  G05B2219/37153 ,  G05B2219/37296 ,  G05B2219/42118 ,  G05B2219/42237 ,  G05B2219/43008 ,  G05B2219/45187 ,  G06K15/22

摘要： A control system providing a control of position, velocity, and direction of movement of a member in an axis of freedom which employs a scale (13) having scale divisions (13a) thereon and bands or zones (A,B,C) defining limits of constant velocity control, acceleration and deceleration zone limits, and a rest or parking position. The scale spans and parallels the axis of freedom. A single channel transducer or encoder (12) mounted on and moving with the member produces time varying output signals in response to the sensing of scale divisions along the scale and signals of different characteristic in response to encoder sensing of the limit bands. The time varying output signals are employed as scale division count signals for position determination and as scale division count signals per unit of time, for velocity feed-back. The signals of different characteristic produced upon entering and during crossing of the limit bands, are utilized in a system of logic for computing control sytem signals to compensate control uncertainties in differing functional modes of the control system.

公开(公告)号：EP0300823A2

公开(公告)日：1989-01-25

申请号：EP88306784.5

申请日：1988-07-22

申请人： Hewlett-Packard Company

发明人： Majette, Mark W. ,  Wickeraad, John A. ,  Walsh, William J.

IPC分类号： G05B19/418 ,  G05B19/23

CPC分类号： G05B19/231 ,  B41J19/202 ,  G01D5/2457 ,  G05B2219/37153 ,  G05B2219/37296 ,  G05B2219/42118 ,  G05B2219/42237 ,  G05B2219/43008 ,  G05B2219/45187 ,  G06K15/22

摘要： A control system providing a control of position, velocity, and direction of movement of a member in an axis of freedom which employs a scale (13) having scale divisions (13a) thereon and bands or zones (A,B,C) defining limits of constant velocity control, acceleration and deceleration zone limits, and a rest or parking position. The scale spans and parallels the axis of freedom. A single channel transducer or encoder (12) mounted on and moving with the member produces time varying output signals in response to the sensing of scale divisions along the scale and signals of different characteristic in response to encoder sensing of the limit bands. The time varying output signals are employed as scale division count signals for position determination and as scale division count signals per unit of time, for velocity feed-back. The signals of different characteristic produced upon entering and during crossing of the limit bands, are utilized in a system of logic for computing control sytem signals to compensate control uncertainties in differing functional modes of the control system.

摘要翻译： 一种控制系统，其提供在自由轴上的部件的位置，速度和运动方向的控制，所述自由轴使用在其上具有比例尺（13a）的刻度（13）和限定限制的带或区（A，B，C） 恒定速度控制，加速和减速区域限制以及休息或停车位置。 尺度跨越并平行于自由轴。 安装在构件上并与构件一起移动的单通道换能器或编码器（12）响应于响应于限制带的编码器感测而沿着尺度的尺度划分和不同特性的信号的感测而产生时变输出信号。 对于速度反馈，时变输出信号用作用于位置确定的比例分割计数信号和每单位时间的比例分割计数信号。 在限制带的进入和交叉期间产生的不同特性的信号被用在用于计算控制系统信号的逻辑系统中，以补偿控制系统的不同功能模式中的控制不确定性。