公开(公告)号：US11652926B2

公开(公告)日：2023-05-16

申请号：US17416539

申请日：2019-06-26

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

Inventor： Eduardo Amela Conesa ,  Diana Canto Estany ,  Marta Blanch Pinol

IPC: H04N1/00 ,  H04N1/393 ,  H04N1/60

CPC classification number: H04N1/00023 ,  H04N1/00068 ,  H04N1/3935 ,  H04N1/6038

Abstract: A method of digital printing is disclosed in which a digital image to be printed has at least one region having pixels comprising superpositioned layers of a first ink and a second ink. The method includes producing at least one sample print and calibrating misalignment of the superpositioned layers at a plurality of calibration locations on the sample print. The resultant misalignment data is provided to a morphing program to pre-deform the digital image to provide a modified digital image which compensates for misalignment during printing. The image is then printed using the modified digital image. An apparatus and a machinereadable storage medium comprising instructions executable by a processor are also disclosed.

公开(公告)号：US20220072855A1

公开(公告)日：2022-03-10

申请号：US17419061

申请日：2019-04-29

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

Inventor： Marta Blanch Pinol ,  Diana Canto Estany ,  Eduardo Amela Conesa

IPC: B41J2/045 ,  B41J2/21 ,  G06K15/10

Abstract: A printing apparatus is disclosed. The printing apparatus comprises a printhead and a controller. The printhead includes an array of nozzles, each having an actuator to eject a printing fluid, the array of nozzles having a first and a second subset of nozzles, wherein the first subset is located at the vicinity of an edge of the printhead. The controller is to assign a firing mask so that the actuators corresponding to the first subset of nozzles are instructed to eject the printing fluid with a higher energy level than the actuators corresponding to the second subset of nozzles.

公开(公告)号：US20210110221A1

公开(公告)日：2021-04-15

申请号：US16978469

申请日：2018-04-09

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

Inventor： Marta Blanch Pinol ,  Cristina Crespi Argemi ,  Sara Echevarria Benito

IPC: G06K15/02 ,  G06K15/00 ,  B41M5/00 ,  B41J2/21

Abstract: There is provided a method for rendering an image according to selected image quality attributes. Two or more image quality attributes are selected from a plurality of attributes of the image. A set of pigments for an area of the image and a density for each pixel of the area are determined. A quantity of pretreatment for deposition onto a print target is determined, where the pretreatment quantity is dependent on the pigments, the density, and the selected image quality attributes.

公开(公告)号：US11999172B2

公开(公告)日：2024-06-04

申请号：US17641777

申请日：2019-09-23

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

Inventor： Sara Benito Echevarria ,  Marta Blanch Pinol ,  Cristina Crespi Argemi

IPC: B41J11/00 ,  B41J2/21

CPC classification number: B41J2/2114 ,  B41J2/2103 ,  B41J11/0015 ,  B41J11/009 ,  B41J2203/011

Abstract: Disclosed herein is a print head arrangement, a printing device and a method of operating a printing device. The print head arrangement comprises a main print head having a plurality of printing nozzles for ejecting a printing fluid and an auxiliary print head having a plurality of pre-treatment nozzles for ejecting a pre-treatment fluid. The print head arrangement further comprises a controller that is to obtain a print medium parameter and to select a subset of the plurality of pre-treatment nozzles for application of the pre-treatment fluid based on the print medium parameter. The print medium parameter characterizes a thermal inertia of the print medium.

公开(公告)号：US20210362514A1

公开(公告)日：2021-11-25

申请号：US16493023

申请日：2018-06-18

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

Inventor： Santiago Sanz Ananos ,  Juan Uroz ,  Eduardo Amela Conesa ,  Francisco Lopez Moral ,  Marta Blanch Pinol ,  Diana Canto Estany

IPC: B41J11/00 ,  B41J2/045

Abstract: Method and devices for dynamically preventing printing errors caused by a media deformation are disclosed. In one example, a pen to print media space (PPS) distance is measured. A media deformation is identified in response to measuring the PPS distance. A corrective function is identified in response to identifying the media deformation. The corrective function identified is then performed. The proposed method provides for consistent quality across a print.

公开(公告)号：US11755862B2

公开(公告)日：2023-09-12

申请号：US16978469

申请日：2018-04-09

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

Inventor： Marta Blanch Pinol ,  Cristina Crespi Argemi ,  Sara Echevarria Benito

IPC: G06K15/02 ,  B41J2/21 ,  B41M5/00 ,  G06K15/00 ,  B41J2/205

CPC classification number: G06K15/1823 ,  B41J2/2114 ,  B41J2/2121 ,  B41J2/2132 ,  B41M5/0017 ,  G06K15/407 ,  B41J2/2054 ,  B41J2002/2058

Abstract: There is provided a method for rendering an image according to selected image quality attributes. Two or more image quality attributes are selected from a plurality of attributes of the image. A set of pigments for an area of the image and a density for each pixel of the area are determined. A quantity of pretreatment for deposition onto a print target is determined, where the pretreatment quantity is dependent on the pigments, the density, and the selected image quality attributes.

公开(公告)号：US11577529B2

公开(公告)日：2023-02-14

申请号：US17204128

申请日：2021-03-17

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

Inventor： Nestor Luid Pinol ,  Marta Blanch Pinol ,  Anna Tarradas Juan

IPC: B41J11/42

Abstract: In one example in accordance with the present disclosure, a media lifting device is described. The media lifting device includes a media lifting strip to sit on a media transport belt of a printing system. The media lifting strip is to raise a lateral edge of incoming media. That lateral edge of incoming media is a portion of the incoming media that is parallel to a media travel direction. The media lifting device also includes a clamp to affix the media lifting strip to the printing system.

公开(公告)号：US20190389203A1

公开(公告)日：2019-12-26

申请号：US16481506

申请日：2017-05-03

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

Inventor： Marta Blanch Pinol ,  Diana Canto Estany ,  Eduardo Amela Conesa

IPC: B41J2/045 ,  B41J2/21

Abstract: In an example, a print system identifies a number of drops to eject corresponding to an expected variation in print fluid based on media temperature and generate print instructions to operate a fluid eject device to that effect. In another example, a print system includes a temperature engine to identify a temperature, a compensator engine to identify a number of drops of print fluid based on the media temperature, and a control engine to generate print instructions to operate a fluid ejection device to place the number of drops of print fluid on media.

公开(公告)号：US20220297452A1

公开(公告)日：2022-09-22

申请号：US17204128

申请日：2021-03-17

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

Inventor： Nestor Luid Pinol ,  Marta Blanch Pinol ,  Anna Tarradas Juan

IPC: B41J11/42

Abstract: In one example in accordance with the present disclosure, a media lifting device is described. The media lifting device includes a media lifting strip to sit on a media transport belt of a printing system. The media lifting strip is to raise a lateral edge of incoming media. That lateral edge of incoming media is a portion of the incoming media that is parallel to a media travel direction. The media lifting device also includes a clamp to affix the media lifting strip to the printing system.

公开(公告)号：US20220143985A1

公开(公告)日：2022-05-12

申请号：US17416539

申请日：2019-06-26

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

Inventor： Eduardo Amela Conesa ,  Diana Canto Estany ,  Marta Blanch Pinol

IPC: B41J2/21 ,  G06K15/02

Abstract: A method of digital printing is disclosed in which a digital image to be printed has at least one region having pixels comprising superpositioned layers of a first ink and a second ink. The method includes producing at least one sample print and calibrating misalignment of the superpositioned layers at a plurality of calibration locations on the sample print. The resultant misalignment data is provided to a morphing program to pre-deform the digital image to provide a modified digital image which compensates for misalignment during printing. The image is then printed using the modified digital image. An apparatus and a machine readable storage medium comprising instructions executable by a processor are also disclosed.