公开(公告)号：US20240296301A1

公开(公告)日：2024-09-05

申请号：US18258635

申请日：2020-12-22

申请人： Hewlett-Packard Development Company, L.P.

发明人： Li QIAN ,  Maurizio BORDONE ,  Carles CARMONA CALPE

IPC分类号： G06K15/02 ,  B29C64/393 ,  B33Y50/02 ,  G06K15/10 ,  G06K15/22

CPC分类号： G06K15/1825 ,  G06K15/027 ,  G06K15/102 ,  G06K15/1823 ,  G06K15/22 ,  B29C64/393 ,  B33Y50/02

摘要： Examples include a method for mitigating decap in a printing system that comprises nozzles, in which printing data associated to a graphical representation and that comprise pixel data points are received. Some data points are associated with a corresponding nozzle and a corresponding direction of movement and at least one specific data point is associated with a specific direction of movement and a specific nozzle which has a decap time below a first predetermined threshold. The received printing data is modified by displacing the printing data of the specific data point in a direction opposite to the specific direction of movement in order to compensate for the decap time.

公开(公告)号：US20240028853A1

公开(公告)日：2024-01-25

申请号：US18263396

申请日：2021-01-29

申请人： Hewlett-Packard Development Company, L.P.

发明人： Maria Nieves TORRES PLANELLS ,  Javier CASTRO SORIANO ,  Alexandre RODRIGUEZ LLOFRIU ,  Maurizio BORDONE

IPC分类号： G06K15/02

CPC分类号： G06K15/188 ,  G06K15/1884

摘要： A print mode determination method is disclosed. The method comprises receiving image data defining parameters of pixels of an image to be printed using a print apparatus; identifying, based on the image data, a first fill area in the image that exceeds a defined threshold area, wherein the first fill area is to be printed in a first color; determining, based on the image data, a first proportion of print agent of each of a plurality of colors to be used to print the first color; and determining, based on the determined first proportions of print agent, a print mode to be used by the print apparatus to print the image. An apparatus and a machine-readable medium are also disclosed.

公开(公告)号：US20240208228A1

公开(公告)日：2024-06-27

申请号：US18557635

申请日：2021-04-28

申请人： Hewlett-Packard Development Company, L.P.

发明人： Gianni CESSEL ,  Carles CARMONA CALPE ,  Marcos CASALDALIGA ALBISU ,  Pablo Carmelo MENA RODRIGUEZ ,  Lluis ABELLO ROSELLO ,  Ma. Pilar VELAZQUEZ GOMEZ ,  Ricard SILVESTRE ,  Jaume VERGES LLAHI ,  Dorkaitz Alain VAZQUEZ FERNANDEZ ,  Jordina TORRENTS BARRENA ,  Maurizio BORDONE

IPC分类号： B41J2/165 ,  B41J2/045 ,  B41J2/21

CPC分类号： B41J2/16579 ,  B41J2/0451 ,  B41J2/04586 ,  B41J2/16535 ,  B41J2/2139 ,  B41J2/2142 ,  B41P2235/20

摘要： A print apparatus is disclosed. The print apparatus comprises a print fluid application unit having a plurality of nozzles through which print fluid is to be deposited onto a printable medium during a printing operation. The print apparatus also comprises a nozzle cleaning surface to engage nozzles during a nozzle cleaning operation. The print apparatus also comprises a scanning unit and a controller. The controller is to control the print fluid application unit to deposit print fluid from nozzles of the plurality of nozzles according to an intended pattern onto the nozzle cleaning surface: control the scanning unit to scan the pattern formed on the nozzle cleaning surface: and responsive to determining. based on the scan, that print fluid from a nozzle of the plurality of nozzles has not been deposited according to the intended pattern, generate an instruction signal regarding maintenance of the print fluid application unit. A method and a machine-readable medium are also disclosed.

公开(公告)号：US20230325127A1

公开(公告)日：2023-10-12

申请号：US18042834

申请日：2020-08-27

申请人： Hewlett-Packard Development Company, L.P.

发明人： Maurizio BORDONE ,  Eduardo AMELA CONESA ,  Mauricio SERAS FRANZOSO

IPC分类号： G06F3/12 ,  B41J2/165

CPC分类号： G06F3/1208 ,  G06F3/121 ,  G06F3/1257 ,  G06F3/1273 ,  G06F3/1229 ,  B41J2/16552 ,  G06F3/1285

摘要： Examples include a method for operating a printing device comprising a specific pen. The method comprises receiving future specific pen firing data related to a plurality of upcoming successive print jobs and collecting historical specific pen firing data. The method further comprises determining a level and timing of servicing of the specific pen in function of both of the received future specific pen firing data and of the collected historical specific pen firing data.

公开(公告)号：US20230267294A1

公开(公告)日：2023-08-24

申请号：US18004063

申请日：2020-07-02

申请人： Hewlett-Packard Development Company, L.P.

发明人： Marcos CASALDALIGA ALBISU ,  Maurizio BORDONE ,  Li QIAN ,  Carles CARMONA CALPE

IPC分类号： G06K15/02 ,  G06K15/00 ,  B41J2/205 ,  B41J2/21

CPC分类号： G06K15/188 ,  G06K15/408 ,  B41J2/2056 ,  B41J2/2132

摘要： A colorant value adjustment method is disclosed. The method comprises obtaining data defining colorant values for a plurality of print addressable locations representative of pixels of an image to be printed during a printing operation, wherein each colorant value is representative of an amount of colorant to be delivered from a print nozzle to a corresponding print addressable location as the print nozzle moves between the print addressable locations during the printing operation. The method comprises determining, based on the obtained data, a measure of time that the print nozzle is not to deposit colorant immediately prior reaching a first print addressable location. The method comprises determining, based on the determined measure of time, an adjustment to be applied to the colorant value at the first print addressable location. The method comprises applying the adjustment to the colorant value for the first print addressable location. An apparatus and a machine-readable medium are also disclosed.