-
公开(公告)号：US10661564B2
公开(公告)日：2020-05-26
申请号：US15521568
申请日：2014-10-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Lawrence H White , Arun K Agarwal , Ron Burns
Abstract: Printheads and printers are described herein. In one example, a printhead includes a plurality of nozzles configured to eject ink drops of different sizes wherein a low drop weight (LDW) drop is ejected through a nozzle with a circular bore (CB), and a high drop weight (HDW) drop is ejected through a nozzle with a non-circular bore (NCB).
-
公开(公告)号：US20180015731A1
公开(公告)日：2018-01-18
申请号：US15541963
申请日：2015-01-29
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Nick McGuinness , Lawrence H White , Paul A Richards
CPC classification number: B41J2/19 , B41J2/1404 , B41J2/1433 , B41J2/175 , B41J2/18 , B41J2002/14467 , B41J2202/11
Abstract: A fluid ejection device includes a fluid slot, a fluid ejection chamber communicated with the fluid slot, a drop ejecting element within the fluid ejection chamber, a fluid circulation channel communicated at a first end with the fluid slot and communicated at a second end with the fluid ejection chamber, a fluid circulating element within the fluid circulation channel, and a particle tolerant architecture within the fluid circulation channel at the second end.
-
公开(公告)号：US20170313099A1
公开(公告)日：2017-11-02
申请号：US15521587
申请日：2014-10-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Lawrence H White , Arun K Agarwal , Ron Burns
IPC: B41J2/21
CPC classification number: B41J2/2103 , B41J2/175 , B41J2/2121 , B41J2/2146 , H04N1/4057
Abstract: Printing methods and systems are described herein. In one example, a method includes rasterizing a document to create color rasters and linearizing the color rasters to create high drop weight (HDW) planes and low drop weight (LDW) planes. HDW and LDW halftone planes are created from the HDW and LDW planes. The HDW and LDW halftone planes are masked to create HDW and LDW printhead maps, and the HDW and LDW printhead maps are merged into print data. The print data is sent to a number of printheads.
-
公开(公告)号：US08991983B2
公开(公告)日：2015-03-31
申请号：US13967917
申请日：2013-08-15
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Michael Hager , Lawrence H White , Alexander N Govyadinov
CPC classification number: B41J2/04533 , B41J2/04528 , B41J2/0453 , B41J2/04563 , B41J2/0458 , B41J2/1404
Abstract: A printhead die includes end regions, a nozzle surface region, fluid passages, ejection chambers, fluid ejectors, non-ejection chambers, and heating resistors. The nozzle surface region is disposed between the end regions. The fluid passages include corresponding ejection nozzles. The ejection nozzles are disposed on the nozzle surface region. The fluid ejectors correspond to the ejection chambers. Each one of the fluid ejectors selectively ejects printing fluid through a corresponding ejection nozzle. The plurality of heating resistors corresponds to the non-ejection chambers. The heating resistors selectively provide heat to the end regions while not ejecting printing fluid through the ejection nozzles.
Abstract translation: 打印头芯片包括端部区域，喷嘴表面区域，流体通道，喷射室，流体喷射器，非喷射室和加热电阻器。 喷嘴表面区域设置在端部区域之间。 流体通道包括相应的喷嘴。 喷嘴设置在喷嘴表面区域上。 流体喷射器对应于喷射室。 每个流体喷射器通过相应的喷嘴选择性地喷射打印流体。 多个加热电阻对应于非喷射室。 加热电阻器选择性地向端部区域提供热量，而不通过喷嘴喷射印刷流体。
-
公开(公告)号：US10828892B2
公开(公告)日：2020-11-10
申请号：US15547116
申请日：2015-04-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Rio Rivas , Lawrence H White , Ed Friesen , Erik D Torniainen
Abstract: In some examples, a printhead can include a main printer fluid line, a firing chamber in fluid communication with the main printer fluid line to receive printer fluid from the main printer fluid line, and a resistor positioned in the firing chamber. The resistor can, for example, receive an electronic current to cause the resistor to heat up and eject printer fluid droplets from the printhead. The printhead can further include a photolithographically fabricated check valve positioned in the firing chamber. The check valve can, for example, be openable to allow filling of the firing chamber with printer fluid and closeable to at least partially seal the main printer fluid line from printer fluid blowback caused by the resistor.
-
Patent Agency Ranking
公开(公告)号：US10562300B2
公开(公告)日：2020-02-18
申请号：US16097527
申请日：2016-07-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Diana Canto Estany , Lawrence H White , Macia Sole Pons
Abstract: Thermal inkjet printing wherein a printhead has ink ejection elements which are energizable by electrical pulses of a given energy with fire pulses of an amplitude (V) and a fire pulse width (fp). A printer controller sends commands to the printhead to spit ink drops, one or more temperature sensors coupled to the printhead measure a temperature of the printhead, and a calibration component coupled to the temperature sensor variably adjusts the fire pulse energy provided to the having ink ejection elements of the printhead. The calibration component initiates calibrating the printhead, spitting a number (X) of ink drops at a frequency (Y) by the electrical pulses, reading and storing printhead temperature, varying the fire pulse energy by repeating spitting ink drops and reading and storing printhead temperature, finding minimum temperature from the stored printhead temperatures, and deriving an operational fire pulse (fpop) from a fire pulse (fpon) that has produced the minimum temperature, wherein the printer controller uses the operational fire pulse (fpop) for printing.
-
公开(公告)号：US20190126616A1
公开(公告)日：2019-05-02
申请号：US16097527
申请日：2016-07-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Diana Canto Estany , Lawrence H White , Macia Sole Pons
Abstract: Thermal inkjet printing wherein a printhead has ink ejection elements which are energizable by electrical pulses of a given energy with fire pulses of an amplitude (V) and a fire pulse width (fp). A printer controller sends commands to the printhead to spit ink drops, one or more temperature sensors coupled to the printhead measure a temperature of the printhead, and a calibration component coupled to the temperature sensor variably adjusts the fire pulse energy provided to the having ink ejection elements of the printhead. The calibration component initiates calibrating the printhead, spitting a number (X) of ink drops at a frequency (Y) by the electrical pulses, reading and storing printhead temperature, varying the fire pulse energy by repeating spitting ink drops and reading and storing printhead temperature, finding minimum temperature from the stored printhead temperatures, and deriving an operational fire pulse (fpop) from a fire pulse (fpon) that has produced the minimum temperature, wherein the printer controller uses the operational fire pulse (fpop) for printing.
-
公开(公告)号：US10183496B2
公开(公告)日：2019-01-22
申请号：US15521587
申请日：2014-10-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Lawrence H White , Arun K Agarwal , Ron Burns
Abstract: Printing methods and systems are described herein. In one example, a method includes rasterizing a document to create color rasters and linearizing the color rasters to create high drop weight (HDW) planes and low drop weight (LDW) planes. HDW and LDW halftone planes are created from the HDW and LDW planes. The HDW and LDW halftone planes are masked to create HDW and LDW printhead maps, and the HDW and LDW printhead maps are merged into print data. The print data is sent to a number of printheads.
-
公开(公告)号：US10780695B2
公开(公告)日：2020-09-22
申请号：US16280499
申请日：2019-02-20
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Lawrence H White , Arun K Agarwal , Ron Burns
Abstract: Printheads and printers are described herein. In one example, a printhead includes a number of drop generators disposed in a first array and a second array. The drop generators in both the first array and the second array are spaced one dot pitch apart perpendicular to the motion of a print medium, and alternate between a high drop weight (HDW) drop generator and a low drop weight (LDW) drop generator. Each drop generator in the first array is in a line of the motion of the print medium with a corresponding drop generator in the second array, wherein each HDW drop generator in the first array is in line with an LDW drop generator in the second array, and each LDW drop generator in the first array is in line with an HDW drop generator in the second array.
-
公开(公告)号：US10093096B2
公开(公告)日：2018-10-09
申请号：US15329972
申请日：2014-07-31
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Lawrence H White , Ronald A Askeland
Abstract: A printhead of a printer includes a nozzle plate having a first layer, a second layer, and an intermediate channel. The first layer can have at least one fluid chamber for holding an immiscible fluid, and a plurality of ejection fluid chamber for holding an ejection fluid. The second layer can have a plurality of ejection fluid nozzles, one ejection fluid nozzle being in fluid communication with one ejection fluid chamber. The intermediate channel can form a passage between the first layer and the second layer. Further, the intermediate channel is in fluid communication with the fluid chambers to carry the immiscible fluid from the fluid chambers towards each of the ejection fluid nozzles for forming a layer of the immiscible fluid over the ejection fluid chambers to maintain the printhead.
-
-
-
-
-
-
-
-
-
Search Results
24
records
(took 0.02 seconds)
