公开(公告)号：US20210221140A1

公开(公告)日：2021-07-22

申请号：US16095896

申请日：2016-07-13

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

Inventor： Arun K Agarwal

IPC: B41J2/165

Abstract: According to examples, an ejection nozzle may include an ejection nozzle orifice to eject printing material, and a service nozzle may include a service nozzle orifice to eject service fluid.

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

IPC: B41J2/21 ,  B41J2/175 ,  H04N1/405

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：US10245832B2

公开(公告)日：2019-04-02

申请号：US15521481

申请日：2014-10-30

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

Inventor： Lawrence H White ,  Arun K Agarwal ,  Ron Burns

IPC: B41J2/14 ,  B41J2/175 ,  B41J2/155 ,  B41J2/21 ,  B41J3/54

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：US10081188B2

公开(公告)日：2018-09-25

申请号：US15485064

申请日：2017-04-11

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

Inventor： Chien-Hua Chen ,  Michael W Cumbie ,  Arun K Agarwal

IPC: B41J2/14 ,  B41J2/16 ,  B29C69/00

CPC classification number: B41J2/1632 ,  B29C69/001 ,  B41J2/14016 ,  B41J2/1404 ,  B41J2/14145 ,  B41J2/14201 ,  B41J2/1433 ,  B41J2/155 ,  B41J2/1601 ,  B41J2/1603 ,  B41J2/1607 ,  B41J2/162 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1637 ,  B41J2/1645 ,  B41J2002/14419 ,  B41J2002/14491 ,  B41J2202/19 ,  B41J2202/20 ,  H05K1/186 ,  H05K3/284 ,  H05K3/32 ,  H05K3/4007 ,  H05K2203/0228 ,  H05K2203/1316 ,  Y10T29/49401

Abstract: In an embodiment, a fluid flow structure includes a micro device embedded in a molding. A fluid feed hole is formed through the micro device, and a saw defined fluid channel is cut through the molding to fluidically couple the fluid feed hole with the channel.

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

IPC: B41J2/14 ,  B41J2/155 ,  B41J2/21 ,  B41J2/175 ,  B41J3/54

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：US20170313066A1

公开(公告)日：2017-11-02

申请号：US15521481

申请日：2014-10-30

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

Inventor： Lawrence H White ,  Arun K Agarwal ,  Ron Burns

IPC: B41J2/14

CPC classification number: B41J2/1433 ,  B41J2/1404 ,  B41J2/1412 ,  B41J2/155 ,  B41J2/175 ,  B41J2/2125 ,  B41J2/2146 ,  B41J3/543 ,  B41J2002/14475 ,  B41J2202/20

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：US20170305152A1

公开(公告)日：2017-10-26

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

IPC: B41J2/14

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：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

IPC: B41J2/14 ,  B41J2/175

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：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.