-
公开(公告)号：US11498337B2
公开(公告)日：2022-11-15
申请号：US16604554
申请日：2018-05-14
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Li Qian , Marc Bautista , Francisco Guerrero
IPC: B41J2/165
Abstract: Printing liquid is spat from ai least one printhead nozzle onto a printing medium in a spitting zone when the printhead traverses the spitting zone during printing. The spitting zone is an area of the printing medium located at least partially in a second half of the printing medium in the direction of printhead travel, and wherein a centre point of the spitting zone is located in the second half of the printing medium in the direction of printhead travel.
-
公开(公告)号：US11407232B2
公开(公告)日：2022-08-09
申请号：US16977756
申请日：2018-04-23
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Li Qian , Javier Castro Soriano , Ruben Recasens Oros
IPC: B41J29/393 , B41J2/21 , G06K15/10
Abstract: A method comprises printing an image using a printhead cartridge including a number of dies, each die comprising a nozzle array, the printing comprising: determining a drop parameter of fluid drops ejected from nozzles of the nozzle array of at least one die; comparing the drop parameter to a threshold value; and determining an image characteristic of an image to be printed; and if the image characteristic meets a defined criterion and if the drop parameter exceeds the threshold value, applying a second print mask for printing the image; and if the image characteristic does not meet the defined criterion or if the drop parameter does not exceed the threshold value, applying a first print mask for printing the image, wherein the second print mask uses less nozzles of the nozzle arrays than the first print mask.
-
公开(公告)号：US20210362509A1
公开(公告)日：2021-11-25
申请号：US16604555
申请日：2018-07-02
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Li Qian
IPC: B41J2/21 , B41J29/393
Abstract: A media may comprise an alignment pattern on a surface of the media, the alignment pattern comprising a first set of marks of a first color, and a plurality of reference areas covering at least partially the first set of marks and the reference areas having a plurality of gaps. The reference areas may be a second colour, wherein the second colour is different to the first colour. The reference areas may be formed of an printing fluid such that the first set of marks underneath the reference areas are less detectable than one of the first set of marks in one of the plurality of gaps. The one of the first set of marks that is more detectable indicates a measure of alignment between the first set of marks and the reference areas.
-
公开(公告)号：US20210321017A1
公开(公告)日：2021-10-14
申请号：US17272417
申请日：2018-09-26
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Maxime Rosello , Li Qian , Pere Gasparin Talarn
Abstract: An example of a color management module is disclosed. The color management module is to generate a mapping from an incoming color space to a printer color space by a color pipeline. In the generation of the mapping, the color pipeline is adjusted so that the mapping of a target color associated with a first composition further includes adding a quantity of a second composition to the mapping of the target color. The second composition comprises a lower visibility than the first composition.
-
公开(公告)号：US20210291518A1
公开(公告)日：2021-09-23
申请号：US17261052
申请日：2018-12-03
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Li Qian , Jamie Juan Munoz , David Munoz Navarro
IPC: B41J2/045
Abstract: A printing apparatus is disclosed. The printing apparatus comprises a printhead and a controller. The printhead is to spit a printing fluid comprising a first mode and a second mode. The first mode corresponds to using a first energy level to spit the printing fluid and the second mode corresponds to using a second energy level to spit the printing fluid. The second energy level comprises a higher energy level than the first energy level. The controller is to determine a decap risk zone associated with the printing fluid, determine in view of the decap risk zone a decap location, and instruct the printhead to spit using the second mode at the decap location.
-
Patent Agency Ranking
公开(公告)号：US20210097700A1
公开(公告)日：2021-04-01
申请号：US16977955
申请日：2018-03-27
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Li Qian , Juan Carlos Arco Fernandez
Abstract: An example system is disclosed for measuring movement of print media, the system comprising first image capture apparatus to capture a first image of a portion of print media, and second image capture apparatus to capture second images of the portion of print media using an image capture parameter based on the first image and to measure movement of the print media using the second images.
-
公开(公告)号：US10688804B2
公开(公告)日：2020-06-23
申请号：US15760967
申请日：2015-11-05
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Li Qian , Andreas Müller , Carles Ruiz Floriach , Guillem Roig
Abstract: Examples herein provide a method. The method includes preconditioning a printing apparatus, including: increasing a temperature of an inkjet printhead in a print zone in the printing apparatus to a first temperature higher than or equal to about a steady state printhead temperature; and increasing a temperature of the print zone such that a portion of a print medium disposed over a portion of a platen in the print zone is at a second temperature higher than or equal to about a steady state print zone temperature. The method further includes disposing, using the printhead, an ink at the steady state printhead temperature onto the portion of the print medium to form an image thereon.
-
公开(公告)号：US10670463B2
公开(公告)日：2020-06-02
申请号：US16073376
申请日：2016-05-10
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Li Qian , Xavier Domingo , Alfonso Sanchez , Secundino Vicente Vicente
Abstract: Examples herein provide a method. The method includes printing first color patches at a first location on a first side of a print medium. The method includes generating an international color consortium (“ICC”) profile of the first side by characterizing the first color patches using a spectrophotometer. The method includes printing, using the ICC profile of the first side, second color patches at a second location on the first side of the print medium. The method includes printing third color patches on a second side of the print medium, the third patches being a registered mirrored copy of the second patches. The method includes generating an ICC profile of the second side by characterizing the registered second and third patches using the spectrophotometer.
-
公开(公告)号：US09533513B1
公开(公告)日：2017-01-03
申请号：US14817636
申请日：2015-08-04
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Li Qian
IPC: B41J2/21 , B41J19/14 , B41J29/393
CPC classification number: B41J2/2135 , B41J2/2132 , B41J19/142 , B41J19/145 , B41J29/393
Abstract: A system, method and non-transitory computer readable medium for testing the alignment of a bidirectional scanning print system are described. A first swathe is printed in first direction, and a second swathe is printed after the first in a second direction along a print axis. Each swathe comprises a plurality of printed blocks aligned along the print axis, separated by unprinted bars. Misalignment in the print system can be identified from the print output.
Abstract translation: 描述了用于测试双向扫描打印系统的对准的系统，方法和非暂时计算机可读介质。 在第一方向上打印第一片，并且沿第一方向沿着打印轴在第二方向上印刷第二片。 每个包括沿着打印轴对准的多个印刷块，由未打印的条分开。 可以从打印输出识别打印系统中的未对准。
-
公开(公告)号：US09168752B2
公开(公告)日：2015-10-27
申请号：US14057932
申请日：2013-10-18
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Francesc Ros Cerro , Macia Sole Pons , David Ramirez Muela , Li Qian
IPC: B41J2/165
CPC classification number: B41J2/19 , B41J2/16526 , B41J2/1707 , B41J2/17513 , B41J2/17556 , B41J2002/17516
Abstract: A print head priming system comprises a vent closure section to close a vent, where the vent is to compensate backpressure in a print head. An inlet to receive pressurized gas from a source of pressurized gas is to provide the pressurized gas to the print head. A pressure relief valve is to open in response to pressure in the print head reaching or exceeding a predetermined value by the provision of gas to the print head by the source of pressurized gas.
Abstract translation: 打印头起动系统包括用于关闭通气口的通风口闭合部分，其中通风口用于补偿打印头中的背压。 从加压气体源接收加压气体的入口是将加压气体提供给打印头。 通过由加压气体源向打印头提供气体，压力释放阀将响应于打印头中的压力而达到或超过预定值而打开。
-
-
-
-
-
-
-
-
-
Search Results
41
records
(took 0.024 seconds)
