公开(公告)号：US10382654B2

公开(公告)日：2019-08-13

申请号：US15763789

申请日：2016-01-29

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

Inventor： Barret Kammerzell ,  Josep-Maria Serra ,  Pablo Vidal Alvarez ,  Utpal Kumar Sarkar

IPC: H04N1/60 ,  G06K15/02 ,  B41J2/01 ,  G06F3/12

Abstract: In an example, a method includes receiving print data indicative of an image to be printed on a substrate. The print data may indicate an image portion in which an image is present and a void portion in which the image is absent. An amount of background print agent to be applied to a region of the substrate corresponding to the locations of the image portion and the void portion on the substrate when the image is printed may be determined. In examples, the amount of background print agent determined to be applied to a region of the substrate corresponding to the location of the void portion on the substrate when the image is printed is greater than the amount of a background print agent to be applied to the region of the substrate corresponding to the location of the image portion on the substrate when the image is printed.

公开(公告)号：US20180241912A1

公开(公告)日：2018-08-23

申请号：US15763789

申请日：2016-01-29

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

Inventor： Barret Kammerzell ,  Josep-Maria Serra ,  Pablo Vidal ÃLVAREZ ,  Utpal Kumar Sarkar

IPC: H04N1/60 ,  B41J2/01 ,  G06F3/12

CPC classification number: H04N1/6005 ,  B41J2/01 ,  G06F3/1208 ,  G06F3/1253 ,  G06K15/1868 ,  G06K15/1878 ,  G06K15/189 ,  H04N1/6022 ,  H04N1/6094

Abstract: In an example, a method includes receiving print data indicative of an image to be printed on a substrate. The print data may indicate an image portion in which an image is present and a void portion in which the image is absent. An amount of background print agent to be applied to a region of the substrate corresponding to the locations of the image portion and the void portion on the substrate when the image is printed may be determined. In examples, the amount of background print agent determined to be applied to a region of the substrate corresponding to the location of the void portion on the substrate when the image is printed is greater than the amount of a background print agent to be applied to the region of the substrate corresponding to the location of the image portion on the substrate when the image is printed.

公开(公告)号：US20180215104A1

公开(公告)日：2018-08-02

申请号：US15745939

申请日：2015-10-19

Applicant: Leticia RUBIO ,  Utpal Kumar SARKAR ,  Salvador SANCHEZ RIBES ,  HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Leticia Rubio ,  Utpal Kumar Sarkar ,  Salvador Sanchez Ribes

IPC: B29C64/393 ,  B29C64/209 ,  B29C64/35 ,  B29C64/165 ,  B29C64/295 ,  B33Y40/00 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00

CPC classification number: B29C64/393 ,  B29C64/165 ,  B29C64/209 ,  B29C64/295 ,  B29C64/35 ,  B29C64/386 ,  B29K2105/251 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

Abstract: In an example, a processor comprises an ancillary print agent distribution module to determine instructions for a print control module. The print control module may be to control the distribution of print agent onto a first region of a layer of build material in an object fabrication chamber in an additive manufacturing process in which at least one object is generated by selective solidification of each of a plurality of layers of build material and the selective solidification of build material is determined by the distribution of at least one print agent. The instructions determined by the ancillary print agent distribution module may be to cause the print control module to control the distribution of print agent in a second region of a layer of build material in an object fabrication chamber as part of a process which is ancillary to object generation. The first and second regions may be spatially distinct.

公开(公告)号：US20170348990A1

公开(公告)日：2017-12-07

申请号：US15673721

申请日：2017-08-10

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

Inventor： M. Isabel Borrell Bayona ,  Xavier Farina Vargas ,  Leticia Rubio ,  Utpal Kumar Sarkar

IPC: B41J25/308 ,  B41J2/155 ,  B41J2/21 ,  B41J2/045 ,  G06K15/10 ,  B41J29/393

CPC classification number: B41J25/308 ,  B41J2/04505 ,  B41J2/04508 ,  B41J2/155 ,  B41J2/2132 ,  B41J2/2139 ,  B41J2/2146 ,  B41J29/393 ,  B41J2202/21 ,  G06K15/102 ,  G06K15/105 ,  G06K15/107

Abstract: Example implementations relate to swath height error compensation. Some examples may determine a density of an image to be printed in an overlap area of a printing material. The overlap area may include target pixels capable of being printed by a first set of drop ejection elements and a second set of drop ejection elements that are redundant to the first set of drop ejection elements. Some implementations may also determine a mask to apply to the first and second set of drop ejection elements based on the determined density, and the mask may designate at least one additional drop to apply to at least one target pixel in the overlap area by at least one of the first and second set of drop ejection elements. Some implementations may also apply the mask to the first set of drop ejection elements and the second set of drop ejection elements.

公开(公告)号：US11007775B2

公开(公告)日：2021-05-18

申请号：US16475618

申请日：2017-04-25

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

Inventor： Leticia Rubio ,  Utpal Kumar Sarkar ,  Xavier Quintero Ruiz

IPC: B41J2/045

Abstract: A circuit 108 for controlling a plurality of fluid dispense nozzles 202(N), the circuit 108 to change an order in which the fluid dispense nozzles 202(N) are actuated.

公开(公告)号：US10661506B2

公开(公告)日：2020-05-26

申请号：US15540343

申请日：2015-02-05

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

Inventor： Juan Manuel Garcia Reyero Vinas ,  Utpal Kumar Sarkar ,  Peter Morovic ,  Jan Morovic

IPC: B29C64/393 ,  G06T17/00 ,  B33Y50/02 ,  G05B19/4099 ,  G06T15/20

Abstract: Cells of an n-dimensional object are indexed. A plurality of indexing digits are grouped for each axis of the n dimensions of the n-dimensional object. A first indexing digit of a given group is allocated to each of at least two cells resulting from at least one subdivision of the dimension of the object along the axis of the given group; and an mth subsequent indexing digit of the given group is allocated to any subsequent at least two cells resulting from any subsequent at least one subdivision of at least one cell of the at least two cells resulting from the m−1th subdivision of the dimension of the object along the axis of the given group.

公开(公告)号：US20170361536A1

公开(公告)日：2017-12-21

申请号：US15540343

申请日：2015-02-05

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

Inventor： Juan Manuel Garcia Reyero Vinas ,  Utpal Kumar Sarkar ,  Peter Morovic ,  Jan Morovic

IPC: B29C64/393 ,  G06T17/00 ,  B33Y50/02 ,  G05B19/4099 ,  G06T15/20

CPC classification number: B29C64/393 ,  B33Y50/02 ,  G05B19/4099 ,  G05B2219/35134 ,  G05B2219/49007 ,  G06T15/205 ,  G06T17/005

Abstract: Cells of an n-dimensional object are indexed. A plurality of indexing digits are grouped for each axis of the n dimensions of the n-dimensional object. A first indexing digit of a given group is allocated to each of at least two cells resulting from at least one subdivision of the dimension of the object along the axis of the given group; and an mth subsequent indexing digit of the given group is allocated to any subsequent at least two cells resulting from any subsequent at least one subdivision of at least one cell of the at least two cells resulting from the m−1th subdivision of the dimension of the object along the axis of the given group.

公开(公告)号：US20170173984A1

公开(公告)日：2017-06-22

申请号：US15310171

申请日：2014-05-21

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

Inventor： M. Isabel Borrell Bayona ,  Xavier Farina Vargar ,  Leticia Rubio ,  Utpal Kumar Sarkar

IPC: B41J25/308

CPC classification number: B41J25/308 ,  B41J2/04505 ,  B41J2/04508 ,  B41J2/155 ,  B41J2/2132 ,  B41J2/2139 ,  B41J2/2146 ,  B41J29/393 ,  B41J2202/21 ,  G06K15/102 ,  G06K15/105 ,  G06K15/107

Abstract: Example implementations relate to swath height error compensation. Some examples may determine a density of an image to be printed in an overlap area of a printing material. The overlap area may include target pixels capable of being printed by a first set of drop ejection elements and a second set of drop ejection elements that are redundant to the first set of drop ejection elements. Some implementations may also determine a mask to apply to the first and second set of drop ejection elements based on the determined density, and the mask may designate at least one additional drop to apply to at least one target pixel in the overlap area by at least one of the first and second set of drop ejection elements. Some implementations may also apply the mask to the first set of drop ejection elements and the second set of drop ejection elements.

公开(公告)号：US20140210911A1

公开(公告)日：2014-07-31

申请号：US13754198

申请日：2013-01-30

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

Inventor： Andreas Mueller ,  Jacint Humet Pous ,  Jaime Fernandez del Rio ,  Utpal Kumar Sarkar

IPC: B41J2/04

CPC classification number: B41J2/04 ,  G06K15/107 ,  H04N1/52 ,  H04N1/605

Abstract: An apparatus and method for use in printing a swath in a multipass printing device are disclosed. The method comprises selectively depositing a drop of ink associated with a pixel to be printed on a print media based on a substantially uniform print mask function during a first pass of a print head, and selectively depositing a further drop of ink associated with the pixel on the print media based on a ramp print mask function during a further pass of the print head.

Abstract translation: 公开了一种用于在多重打印装置中打印条带的装置和方法。 该方法包括在打印头的第一次通过期间基于基本上均匀的打印掩模功能选择性地沉积与要打印的像素相关联的墨滴，以及选择性地将与像素相关联的另一墨水滴放置在 所述打印介质基于所述打印头的进一步通过期间的斜坡打印掩模功能。

公开(公告)号：US20220321734A1

公开(公告)日：2022-10-06

申请号：US17616009

申请日：2019-07-31

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

Inventor： Jordi Sender Beleta ,  Utpal Kumar Sarkar ,  Maria Isabel Borrell Bayona ,  Andres Fonts Santana

IPC: H04N1/405 ,  G06F3/12

Abstract: An image processing method is disclosed. The method includes receiving information relating to a print component to be used to print a target image; determining, based on the received information relating to the print component, half-toning parameters to be applied when generating a half-tone representation of the target image; and generating, using the determined half-toning parameters, a half-tone representation of the target image. An apparatus and a machine-readable medium are also disclosed.