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：US20170050433A1

公开(公告)日：2017-02-23

申请号：US15307466

申请日：2014-07-25

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

Inventor： Barret Kammerzell ,  Antonio Gracia Verdugo

IPC: B41J2/045 ,  G06K15/10 ,  G06K15/02 ,  B41J19/14

CPC classification number: B41J2/04558 ,  B41J19/142 ,  B41J19/145 ,  G06K15/102 ,  G06K15/1822 ,  H04N1/4051 ,  H04N1/4092

Abstract: A method of printing includes identifying vertical edges in a halftone image. The method also includes determining whether a lightness of color of a first predetermined area to a left side of a respective vertical edge is substantially equal to, less than, or greater than the lightness of color of a second predetermined area to a right side of the respective vertical edge. The method also includes categorizing respective vertical edges left vertical edges, right vertical edges, and neutral vertical edges to prioritize a print direction thereof.

Abstract translation: 打印方法包括识别半色调图像中的垂直边缘。 该方法还包括确定第一预定区域的颜色在相应垂直边缘的左侧的亮度是否基本上等于，小于或大于第二预定区域的颜色的亮度 相应的垂直边。 该方法还包括将垂直边缘左垂直边缘，右垂直边缘和中性垂直边缘分类以优先化其打印方向。

公开(公告)号：US11983832B2

公开(公告)日：2024-05-14

申请号：US17288816

申请日：2019-04-25

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

Inventor： Matthew A. Shepherd ,  Barret Kammerzell

IPC: G06T19/20 ,  B22F10/80 ,  B29C64/393 ,  B33Y50/02 ,  G06F30/17 ,  G06F113/10

CPC classification number: G06T19/20 ,  B22F10/80 ,  B29C64/393 ,  B33Y50/02 ,  G06F30/17 ,  G06F2113/10

Abstract: In an example implementation, a method of compensating for dimensional variation in 3D printing includes receiving a voxel space model that represents a 3D object to be printed within a build volume of a 3D printing system, asymmetrically eroding voxels from the voxel space model, and printing the 3D object based on the asymmetrically eroded voxel space model.

公开(公告)号：US20210331400A1

公开(公告)日：2021-10-28

申请号：US16605067

申请日：2018-04-10

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

Inventor： Sergio Gonzalez ,  Matthew A Vancouver ,  Scott White ,  Barret Kammerzell

IPC: B29C64/393 ,  B33Y50/02 ,  G06T17/00

Abstract: In an example implementation, a method of compensating for dimensional variation in 3D printing includes receiving a 3D object model that represents a 3D part to be printed. The method also includes receiving a build material type and a position for printing the 3D part within a build volume. The method includes determining from the position, target subvolumes of the build volume into which the 3D part is to be printed, retrieving a dimensional compensation factor associated with each target subvolume, and then applying each dimensional compensation factor to the 3D object model to scale the 3D part according to the position of the 3D part within the build volume.

公开(公告)号：US10850521B2

公开(公告)日：2020-12-01

申请号：US15765810

申请日：2015-10-29

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

Inventor： Barret Kammerzell ,  Marta Coma Vives ,  Daniel Callejo ,  Guillem Montero Costa

IPC: B41J2/175

Abstract: Herein is disclosed an ink storage unit. The ink storage unit may comprise first and second reservoirs, each having a variable internal volume; a transfer system to transfer ink between the first and second reservoirs such that as ink is transferred from the first reservoir to the second reservoir, the internal volume of the first reservoir decreases and the internal volume of the second reservoir increases.

公开(公告)号：US09981467B2

公开(公告)日：2018-05-29

申请号：US15307466

申请日：2014-07-25

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

Inventor： Barret Kammerzell ,  Antonio Gracia Verdugo

IPC: B41J2/04 ,  B41J2/045 ,  B41J19/14 ,  H04N1/405 ,  H04N1/409 ,  G06K15/10 ,  G06K15/02

CPC classification number: B41J2/04558 ,  B41J19/142 ,  B41J19/145 ,  G06K15/102 ,  G06K15/1822 ,  H04N1/4051 ,  H04N1/4092

Abstract: A method of printing includes identifying vertical edges in a halftone image. The method also includes determining whether a lightness of color of a first predetermined area to a left side of a respective vertical edge is substantially equal to, less than, or greater than the lightness of color of a second predetermined area to a right side of the respective vertical edge. The method also includes categorizing respective vertical edges left vertical edges, right vertical edges, and neutral vertical edges to prioritize a print direction thereof.

公开(公告)号：US09321280B2

公开(公告)日：2016-04-26

申请号：US14417326

申请日：2012-10-24

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

Inventor： Antonio Gracia Verdugo ,  Barret Kammerzell ,  Joan Albert Jorba Closa

IPC: B41J2/015 ,  B41J11/00 ,  B41J2/21

CPC classification number: B41J11/0015 ,  B41J2/2114 ,  B41M5/0011 ,  B41M5/0017 ,  B41M2205/12

Abstract: In the field of printing technology, non impact printing methods such as inkjet printing may be used to deposit an ink composition onto print media to form an image. An ink composition typically comprises a colorant material and a vehicle, such as an aqueous solution, for delivering the colorant material to the print media. A wide range of such ink compositions is known in the industry. It is also known to use various pre-treatment compositions in combination with ink compositions in order to enhance the quality of a final image. Pre-treatment compositions are often substantially colorless liquid compositions that interact with elements of the ink composition to fix colorant to the print media. Pre-treatment compositions may help to improve image quality for example by reducing image bleeding, edge roughness and other image quality issues.

Abstract translation: 在印刷技术领域中，可以使用诸如喷墨印刷的非冲击印刷方法将油墨组合物沉积在印刷介质上以形成图像。 油墨组合物通常包括着色剂材料和用于将着色剂材料输送到打印介质的载体，例如水溶液。 在工业中已知广泛的这种油墨组合物。 还已知与油墨组合物组合使用各种预处理组合物以提高最终图像的质量。 预处理组合物通常是基本上无色的液体组合物，其与油墨组合物的元素相互作用以将着色剂固定到印刷介质上。 预处理组合物可以帮助改善图像质量，例如通过减少图像渗色，边缘粗糙度和其他图像质量问题。