公开(公告)号：US11584121B2

公开(公告)日：2023-02-21

申请号：US17051106

申请日：2018-08-14

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

Inventor： James Kearns ,  Ron Burns ,  Craig LeVier ,  Leslie Caroline Drogo

IPC: B41J11/00 ,  B41M5/00 ,  B41J2/045

Abstract: A deposition module within a web press for inhibiting media deformation may include a fluid deposition device located on a side of a media, and a processing device to control the fluid deposition device to selectively apply a wetting agent to the media. The deposition of the wetting agent may be based on the location of content printed on the media as defined by print data.

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：US20180117926A1

公开(公告)日：2018-05-03

申请号：US15569307

申请日：2015-06-26

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

Inventor： Jo W. Stellbrink ,  Ron Burns ,  Whitney E. Smith ,  April E. Sullivan

IPC: B41J2/21 ,  G06K15/02 ,  B41J2/045

CPC classification number: B41J2/2103 ,  B41J2/04508 ,  B41J2/04586 ,  B41J2/2132 ,  B41J29/393 ,  G06K15/02 ,  G06K15/027 ,  H04N1/40 ,  H04N1/6033

Abstract: Examples include computing devices, processes, and/or machine-readable storage mediums comprising instructions to analyze at least one digital image corresponding to calibration output of a printing device to determine location saturation values for nozzle locations of the printing device. At least one printhead is segmented into segments corresponding to one or more nozzle locations. A reference segment is determined from among the segments of the printhead, and a uniformity correction value is determined for at least one segment based at least in part on the reference segment.

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：US20190176470A1

公开(公告)日：2019-06-13

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 ,  B41J2/21 ,  B41J2/175 ,  B41J2/155

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：US20170368838A1

公开(公告)日：2017-12-28

申请号：US15543546

申请日：2015-04-30

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

Inventor： George C. Ross ,  Ron Burns

IPC: B41J2/21 ,  B41J2/045 ,  B41J2/155 ,  B41J29/38

CPC classification number: B41J2/2125 ,  B41J2/04551 ,  B41J2/0458 ,  B41J2/04593 ,  B41J2/1412 ,  B41J2/155 ,  B41J2/2121 ,  B41J2/2128 ,  B41J2/2146 ,  B41J29/38 ,  B41J2002/14475

Abstract: In an example implementation, a method of dual and single drop weight printing includes operating a printing system in a hybrid drop weight print mode to enable ejecting black ink from high drop weight nozzles and low drop weight nozzles, and ejecting color ink from high drop weight nozzles but not from low drop weight nozzles.

公开(公告)号：US20170361607A1

公开(公告)日：2017-12-21

申请号：US15543543

申请日：2015-04-24

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

Inventor： Joan Vidal Fortia ,  Lluis Abello Rosello ,  Ron Burns

IPC: B41J2/045 ,  B41J2/145

CPC classification number: B41J2/04535 ,  B41J2/04551 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/145 ,  B41J2/2121 ,  B41J2/2128 ,  B41J2/2142

Abstract: The present disclosure relates to a printhead control system for a printer, wherein the printer includes at least one printhead comprising a plurality of nozzles for ejecting printing fluid, wherein the nozzles include high drop weight nozzles and low drop weight nozzles ejecting drops of different drop weight, and are each arranged to eject printing fluid on a print medium such as to print images in frame areas of the print medium and such as to clean nozzles in spit bar areas of the print medium; the printer further includes a transport unit for moving the print medium relative to the printhead, wherein the print medium includes frame areas for printing images and spit bar areas for cleaning the nozzles; the printhead control device including: a module to determine a first group of said nozzles located over a frame area of the print medium and a second group of said nozzles located over a spit bar area of the print medium; a module to operate the high drop weight nozzles of the first group such as to eject printing fluid and print an image in the frame area; a module to operate disable the low drop weight nozzles of the first group such as to not eject printing fluid in the frame area; and a module to operate the high drop weight nozzles and the low drop weight nozzles of the second group such as to alternately eject printing fluid in the spit bar area.

公开(公告)号：US20200254759A1

公开(公告)日：2020-08-13

申请号：US16861119

申请日：2020-04-28

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：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：US09975329B2

公开(公告)日：2018-05-22

申请号：US15543543

申请日：2015-04-24

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

Inventor： Joan Vidal Fortia ,  Lluis Abello Rosello ,  Ron Burns

IPC: B41J2/045 ,  B41J2/21 ,  B41J2/145

CPC classification number: B41J2/04535 ,  B41J2/04551 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/145 ,  B41J2/2121 ,  B41J2/2128 ,  B41J2/2142

Abstract: The present disclosure relates to a printhead control system for a printer, wherein the printer includes at least one printhead comprising a plurality of nozzles for ejecting printing fluid, wherein the nozzles include high drop weight nozzles and low drop weight nozzles ejecting drops of different drop weight, and are each arranged to eject printing fluid on a print medium such as to print images in frame areas of the print medium and such as to clean nozzles in spit bar areas of the print medium; the printer further includes a transport unit for moving the print medium relative to the printhead, wherein the print medium includes frame areas for printing images and spit bar areas for cleaning the nozzles; the printhead control device including: a module to determine a first group of said nozzles located over a frame area of the print medium and a second group of said nozzles located over a spit bar area of the print medium; a module to operate the high drop weight nozzles of the first group such as to eject printing fluid and print an image in the frame area; a module to operate disable the low drop weight nozzles of the first group such as to not eject printing fluid in the frame area; and a module to operate the high drop weight nozzles and the low drop weight nozzles of the second group such as to alternately eject printing fluid in the spit bar area.