公开(公告)号：US09457584B2

公开(公告)日：2016-10-04

申请号：US14958022

申请日：2015-12-03

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Alexander Govyadinov ,  Craig Olbrich ,  Brian M. Taff

IPC: B41J2/175 ,  B41J2/15 ,  B41J2/14

CPC classification number: B41J2/17596 ,  B41J2/1404 ,  B41J2/14145 ,  B41J2/1433 ,  B41J2/15 ,  B41J2/175 ,  B41J2002/14387 ,  B41J2002/14467 ,  B41J2202/12

Abstract: In an embodiment, a fluid ejection device includes a die substrate having first and second fluid slots along opposite substrate sides and separated by a substrate central region. First and second internal columns of closed chambers are associated with the first and second slots, respectively, and the internal columns are separated by the central region. Fluidic channels extending across the central region fluidically couple closed chambers from the first internal column with closed chambers from the second internal column. Pump actuators in each closed chamber pump fluid through the channels from slot to slot.

公开(公告)号：US20140098156A1

公开(公告)日：2014-04-10

申请号：US14123194

申请日：2011-05-31

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Brian M. Taff ,  Alexander Govyadinov

IPC: G01N21/64 ,  B41J2/125

CPC classification number: G01N21/64 ,  B41J2/04561 ,  B41J2/04586 ,  B41J2/125

Abstract: A drop detection method comprises ejecting an ink drop that includes a fluorescent agent, illuminating the ink drop in flight with excitation light to excite the fluorescent agent, detecting fluorescence emitted by the drop in flight, having a longer wavelength than a wavelength of the excitation light, and, prior to such detecting, filtering out light having a shorter wavelength than the fluorescence wavelength; and a printer with drop detection assembly for performing the method.

Abstract translation: 液滴检测方法包括喷射包含荧光剂的墨滴，用激发光照射飞行中的墨滴以激发荧光剂，检测由飞行中滴下的荧光，具有比激发光的波长更长的波长 并且在这种检测之前，过滤出具有比荧光波长短的波长的光; 以及具有用于执行该方法的液滴检测组件的打印机。

公开(公告)号：US20180201024A1

公开(公告)日：2018-07-19

申请号：US15921614

申请日：2018-03-14

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Alexander Govyadinov ,  Craig Olbrich ,  Brian M. Taff

IPC: B41J2/175 ,  B41J2/14 ,  B41J2/15

CPC classification number: B41J2/17596 ,  B41J2/1404 ,  B41J2/14145 ,  B41J2/1433 ,  B41J2/15 ,  B41J2/175 ,  B41J2002/14387 ,  B41J2002/14467 ,  B41J2202/12

Abstract: A fluid ejection device may include a discharge port, an energy generating element to discharge liquid through the discharge port, a first liquid supply on a first side of the discharge port, a second liquid supply on a second side of the discharge port opposite the first side, a first liquid flow path extending from the first liquid supply to the discharge port, a second liquid flow path extending from the second liquid supply to the discharge port and a fluid displacement actuator in the first liquid flow path.

公开(公告)号：US20170157945A1

公开(公告)日：2017-06-08

申请号：US15433827

申请日：2017-02-15

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Alexander Govyadinov ,  Craig Olbrich ,  Brian M. Taff

IPC: B41J2/175

CPC classification number: B41J2/17596 ,  B41J2/1404 ,  B41J2/14145 ,  B41J2/1433 ,  B41J2/15 ,  B41J2/175 ,  B41J2002/14387 ,  B41J2002/14467 ,  B41J2202/12

Abstract: In an embodiment, a fluid ejection device includes a die substrate having first and second fluid slots along opposite substrate sides and separated by a substrate central region. First and second internal columns of closed chambers are associated with the first and second slots, respectively, and the internal columns are separated by the central region. Fluidic channels extending across the central region fluidically couple closed chambers from the first internal column with closed chambers from the second internal column. Pump actuators in each closed chamber pump fluid through the channels from slot to slot.

公开(公告)号：US09623659B2

公开(公告)日：2017-04-18

申请号：US15252433

申请日：2016-08-31

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Alexander Govyadinov ,  Craig Olbrich ,  Brian M. Taff

IPC: B41J2/14 ,  B41J2/175

CPC classification number: B41J2/17596 ,  B41J2/1404 ,  B41J2/14145 ,  B41J2/1433 ,  B41J2/15 ,  B41J2/175 ,  B41J2002/14387 ,  B41J2002/14467 ,  B41J2202/12

Abstract: In an embodiment, a fluid ejection device includes a die substrate having first and second fluid slots along opposite substrate sides and separated by a substrate central region. First and second internal columns of closed chambers are associated with the first and second slots, respectively, and the internal columns are separated by the central region. Fluidic channels extending across the central region fluidically couple closed chambers from the first internal column with closed chambers from the second internal column. Pump actuators in each closed chamber pump fluid through the channels from slot to slot.

公开(公告)号：US20160257116A1

公开(公告)日：2016-09-08

申请号：US15155480

申请日：2016-05-16

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Brian M. Taff

IPC: B41J2/14

CPC classification number: B41J2/14 ,  B01F11/0082 ,  B01F13/0006 ,  B01F13/0818 ,  B41J2/1433

Abstract: In an embodiment, a fluid ejection device includes a die substrate with a chiclet adhered by its front side to the die substrate. The fluid ejection device also includes an ink delivery slot formed through the chiclet from its back side to its front side. The fluid ejection device further includes a mixing bead at the back side of the chiclet, adjacent the ink delivery slot.

公开(公告)号：US20160167375A1

公开(公告)日：2016-06-16

申请号：US15040314

申请日：2016-02-10

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Brian M. Taff ,  Erik D. Torniainen ,  Daniel A. Kearl

IPC: B41J2/045

CPC classification number: B41J2/04551 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04596 ,  B41J2/14056

Abstract: An inkjet printhead includes an inkjet nozzle with a main actuator and at least one peripheral actuator in the same firing chamber. A determination is made as to whether the inkjet nozzle has sat idle, e.g., not firing for a threshold period of time. When the inkjet nozzle has sat idle, both the main actuator and the peripheral actuator are activated to jet at least one ink drop to renew the inkjet nozzle to mitigate decap conditions. When the inkjet nozzle has not sat idle, only the main actuator is activated to jet ink drops.

Abstract translation: 喷墨打印头包括具有主致动器的喷墨喷嘴和在同一燃烧室中的至少一个外围致动器。 确定喷墨喷嘴是否已经怠速，例如在阈值时间段内不燃烧。 当喷墨嘴已经空闲时，主致动器和外围致动器都被激活以喷射至少一个墨滴以更新喷墨喷嘴以减轻掉色条件。 当喷墨嘴没有怠速时，只有主执行器被激活以喷射墨滴。