-
公开(公告)号：US20240190137A1
公开(公告)日：2024-06-13
申请号：US18556441
申请日：2021-04-21
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Oscar GOMEZ CAMPS , Alexander Jose PEREZ GARCIA , Cristian DIEZ QUILEZ , Ana OROPESA FISICA , Dorkaitz Alain VAZQUEZ FERNANDEZ , Sara ESTRAVIS NIETO
CPC classification number: B41J2/17566 , B41J2/16505
Abstract: The present disclosure relates to methods and devices for estimating an amount of print material available in a print material reservoir of a printer. In an example there is disclosed a method comprising determining a first value for an amount of print material contained within a print material container. The method may further comprise determining, after a printhead maintenance event comprising ejecting print material into a spittoon, a second value for the amount of print material contained within the print material container. The method may further comprise estimating, based on a difference between the first value and the second value, an amount of print material remaining in the print material reservoir.
-
公开(公告)号：US20230202188A1
公开(公告)日：2023-06-29
申请号：US17996590
申请日：2020-04-20
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Dorkaitz Alain VAZQUEZ FERNANDEZ , David BUTINYA TEIXIDO , Albert CRESPI SERRANO , Miquel BOLEDA BUSQUETS
IPC: B41J2/175
CPC classification number: B41J2/17596 , B41J2/17513 , B41J2002/17516
Abstract: The present disclosure refers to a method of monitoring a fluid supply system, the system including a collapsible fluid reservoir to contain a supply of fluid and an outer container to enclose the collapsible fluid reservoir and to receive pressurized gas that pressurizes the supply of fluid, the method comprising a controller to: control a gas pressure pump to feed the fluid to or from the fluid reservoir, the gas pressure pump operating in pressurization cycles; monitor a parameter of the pressurization cycles; and determine a fill state of the fluid reservoir as a function of the monitored parameter.
-
公开(公告)号：US20230136963A1
公开(公告)日：2023-05-04
申请号：US17995721
申请日：2020-04-09
Applicant: Hewlett-Packard Development Company, L.P.
Abstract: Examples relate to a method to recirculate print agent in a printing system. The method comprises detecting a recirculation device comprising a check valve and detecting a printhead connected in parallel to the detected recirculation device. The method further comprises selecting a printhead circulation mode to circulate print agent through the detected printhead and selecting a recirculation device circulation mode to circulate print agent through the detected recirculation device.
-
公开(公告)号：US20240208228A1
公开(公告)日：2024-06-27
申请号：US18557635
申请日：2021-04-28
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： 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
CPC classification number: B41J2/16579 , B41J2/0451 , B41J2/04586 , B41J2/16535 , B41J2/2139 , B41J2/2142 , B41P2235/20
Abstract: 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：US20230406001A1
公开(公告)日：2023-12-21
申请号：US18251142
申请日：2020-10-30
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Dorkaitz Alain VAZQUEZ FERNANDEZ , Maria DINARES ARGEMI , Mauricio SERAS FRANZOSO , Josep ORTIZ MOMPEL
CPC classification number: B41J2/19 , B41J2/16505 , B41J2/17523
Abstract: According to an example, a printhead storage device comprises a printhead pocket to receive a printhead, a receptacle with an interior chamber wherein printing fluid is provided, and a fluid interconnect device comprising a fluid path with the interior chamber. Upon insertion of a printhead to the pocket, the fluid interconnect device is connected to the printhead, thereby providing a fluid connection between the printhead and the interior chamber and wherein the printhead is not operable when inserted in the printhead pocket.
-
Patent Agency Ranking
公开(公告)号：US20240181788A1
公开(公告)日：2024-06-06
申请号：US18553160
申请日：2021-03-29
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Ana OROPESA FISICA , Dorkaitz Alain VAZQUEZ FERNANDEZ , Alberto BORREGO LEBRATO , Jennifer M. KORNGIEBEL , Alvin Zheng-Hui YU , Miquel BOLEDA BUSQUETS , Ryan SUELZLE
CPC classification number: B41J2/195 , B41J2/17596 , B41J29/46 , G06F3/1296
Abstract: Example implementations provide a controller to determine a printing fluid abnormality associated with an ink supply channel of a printer; the controller comprising: an input to receive a signal output by a pressure sensor; the signal being indicative of ink pressure associated with the ink supply channel, and a monitor to determine from a characteristic of the signal the presence of an abnormality in the printing fluid.
-
公开(公告)号：US20240066884A1
公开(公告)日：2024-02-29
申请号：US18259812
申请日：2021-01-29
Applicant: Hewlett-Packard Development Company, L.P.
CPC classification number: B41J2/17566 , B41J2/17596 , G06K15/005 , G06K15/4075
Abstract: A method of monitoring a fluid supply is provided, the fluid supply including a supply tank, an intermediate tank and a fluid pump operatively coupled to the supply tank and the intermediate tank; the method comprising with the intermediate tank having a defined first fluid level, starting to feed fluid from the intermediate tank; when a defined amount of fluid has been fed from the intermediate tank, with the feeding of fluid from the intermediate tank proceeding, activating the fluid pump to supply fluid from the supply tank to the intermediate tank; monitoring the fluid level of the intermediate tank while the fluid pump remains activated; and diagnosing operation of the fluid pump as a function of the fluid level of the intermediate tank.
-
公开(公告)号：US20230373222A1
公开(公告)日：2023-11-23
申请号：US18031134
申请日：2020-10-15
Applicant: Hewlett-Packard Development Company, L.P.
CPC classification number: B41J2/18 , B41J2/1707 , B41J2/17556
Abstract: Examples in accordance with the present disclosure are directed to a method including generating a negative fluid pressure between a fluid supply and a first port of a fluidic ejection device, and generating a positive fluid pressure between the fluid supply and a second port of the fluidic ejection device. The method further includes selectively activating a first priming pump connected to the first port in response to an indication that the first port is transitioning from an open state to a closed state, wherein the selective activation of the first priming pump causes the first port to remain in the open state and causes fluid within the fluidic ejection device to exit through the first port and to recirculate along a fluid flow path.
-
公开(公告)号：US20230286285A1
公开(公告)日：2023-09-14
申请号：US18006084
申请日：2020-07-20
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Dorkaitz Alain VAZQUEZ FERNANDEZ , Alvin Zheng-Hui YU , Joan-Albert MIRAVET JIMENEZ , Albert CRESPI SERRANO
CPC classification number: B41J2/17596 , B41J2/1707
Abstract: A printing fluid delivery system comprising a fluid pump having an inlet and an outlet, a valve connected to the outlet of the fluid pump, and a controller to close the valve while the fluid pump is driven to increase the pressure at the outlet of the fluid pump based on a service condition and to open the valve based on a predefined relief condition to relieve the pressure at the outlet of the fluid pump.
-
公开(公告)号：US20220305801A1
公开(公告)日：2022-09-29
申请号：US17212809
申请日：2021-03-25
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Antonio GRACIA VERDUGO , Ana OROPESA FISICA , Dorkaitz Alain VAZQUEZ FERNANDEZ , Josep ORTIZ MOMPEL
IPC: B41J2/175
Abstract: Aspects of the disclosure provide an electronic device comprising a controller. The controller to determine a volume of print fluid in a first tank of the electronic device, monitor current printing conditions of the electronic device disposing print fluid on a substrate, determine, based on the volume of print fluid and the current printing conditions, whether an adverse printing condition exists, responsive to the volume of print fluid being less than a threshold and the adverse printing condition not existing, control a pump to refill the first tank from a second tank at a flow rate determined at least partially according to the determined volume, and responsive to the volume of print fluid being less than the threshold and the adverse printing condition existing, control the pump to refill the first tank from the second tank at a default flow rate determined independent of the determined volume.
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.019 seconds)
