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公开(公告)号：US10788044B2
公开(公告)日：2020-09-29
申请号：US16470949
申请日：2017-04-25
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Aleix Fort Filgueira , Antonio Gracia Verdugo , Albert Franco Morera , Simone Micheli
Abstract: Circuits for controlling an impeller in a fluid flow distribution system to achieve a target fluid flow are disclosed. The circuit to output a signal representative of a speed value (NT) of the impeller derived from a stored power consumption value (Wi) and speed value (Ni) pairs to achieve the target fluid flow. The circuit to receive a power signal representative of an input power consumption value (W) of the impeller at the speed value (NT) to input fluid to the fluid flow distribution system and to compare the value (W) represented by a power signal for the speed value (NT) with the stored value (Wi) and impeller speed value (Ni) pairs to determine a least difference impeller speed value (NL) of the stored pair comprising a least difference between the value (W) and the value (Wi). The circuit to output a speed signal representative of value (NL).
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公开(公告)号：US10518530B2
公开(公告)日：2019-12-31
申请号：US16098003
申请日：2016-07-18
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Antonio Gracia Verdugo , Mauricio Seras Franzoso , Pau Costal
Abstract: There is disclosed a non-transitory machine-readable medium encoded with instructions executable by a processor and comprising instructions to: control print apparatus to print a test pattern 11 on a test region of a print medium 4; receive test data relating to the test pattern 11 printed on the print medium 4 from a sensor 8; analyse the test data with reference to baseline data to determine if the test pattern 11 satisfies a print quality criterion; output an instruction to operate the print apparatus in a first mode, in which a pre-printing treatment is not applied to the print medium, in response to determining that the test pattern 11 satisfies the print quality criterion, the pre-printing treatment comprising wiping a printing surface of the print medium with a wiper element 10, 20; and output an instruction to operate the print apparatus in a second mode, in which the pre-printing treatment is applied to the print medium 4, in response to determining that the test pattern 11 satisfies the print quality criterion.
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公开(公告)号：US10471731B2
公开(公告)日：2019-11-12
申请号：US15546241
申请日：2015-04-23
Applicant: Hewlett-Packard Development Company, L.P.
IPC: B41J2/21 , H04N1/50 , B41J2/155 , B41J29/393
Abstract: A printing system comprises a processor to obtain image data comprising first image data defining a first color plane of the image and comprising second image data defining a second color plane of the image. The processor is to manipulate the image data such that the second color plane is shifted relative to the first color plane in a media axis direction of a printer. The printing system comprises a printer to print the manipulated image data with the printer.
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公开(公告)号：US10442225B2
公开(公告)日：2019-10-15
申请号：US16097885
申请日：2016-07-28
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Pau Costal , Carles Flotats Villagrasa , Antonio Gracia Verdugo
Abstract: A device (2) includes a media roll (4) to output a print medium (M) in a forward direction (26) and a wiper roll (6) to contact the surface of the print medium (M) at a rotation speed to cause friction on the print medium (M). The device (2) may determine a radius (r2) of the media roll (4) outputting the print medium (M) and, based on this radius (r2), adapt parameters such as the rotation speed of the wiper roll and a back tension (T2) exerted by the media roll (4) on the print medium (M) so as to control the friction caused by the wiper roll (6) on the print medium (M).
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公开(公告)号：US10035343B2
公开(公告)日：2018-07-31
申请号：US15615219
申请日：2017-06-06
Applicant: Hewlett-Packard Development Company, L.P.
CPC classification number: B41J2/04551 , B41J2/04553 , B41J2/0458 , B41J2/04581 , B41J2/04586 , B41J2/165 , B41J2/16508 , B41J2/16517 , B41J2/1652 , B41J2/16526 , B41J2/16579 , B41J2002/16561 , B41J2002/16573
Abstract: In some examples, a method includes, in response to a fluid firing unit being operated according to a normal printing mode, applying a first voltage to the fluid firing unit to fire the fluid firing unit during a printing operation. The method further includes determining, using a sensor, whether a predetermined condition is met, and in response to determining that the predetermined condition is met, operating the fluid firing unit according to a recovery mode in which a second voltage higher than the first voltage is applied to the fluid firing unit to clean the fluid firing unit.
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Patent Agency Ranking
公开(公告)号：US09994025B2
公开(公告)日：2018-06-12
申请号：US15449518
申请日：2017-03-03
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Mauricio Seras Franzoso , Marta Coma Vives , Antonio Gracia Verdugo
IPC: B41J2/165
CPC classification number: B41J2/16535 , B41J2002/1655 , B41J2002/16558
Abstract: A cleaning module includes an actuator device, a fluid chamber, and a wiper member. The actuator device may enter an activation state based on a movement of at least a portion of the actuator device in response to an engagement with the printhead. The fluid chamber may store and supply fluid to the porous wipe material in response to the activation state of the actuator device. The wiper member may apply pressure to a porous wipe material including the fluid therein to wipe the printhead.
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公开(公告)号：US09987858B2
公开(公告)日：2018-06-05
申请号：US15121507
申请日：2014-02-26
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Francisco Javier Perez Gellida , Ezequiel Jordi Rufes Bernad , Marina Cantero Lazaro , Antonio Gracia Verdugo , Santiago Sanz Ananos , Roger Bastardas Pulgoriol , Mikel Zuza Irurueta , Juan Manuel Valero Navazo , Emilio Angulo Navarro
IPC: B41J11/00 , B41J29/377 , B41J2/01 , H05B3/00
CPC classification number: B41J11/002 , B41J2/01 , B41J29/377 , H05B3/00 , H05B2203/035
Abstract: In one example, a print zone heater includes a structure defining a plenum, a heating element, a fan to move air over the heating element into the plenum, and a conduit from the plenum to carry heated air into the print zone.
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公开(公告)号：US09862194B2
公开(公告)日：2018-01-09
申请号：US15116881
申请日：2014-02-19
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Gonzalo Gaston Llado , Marta Coma Vives , Antonio Gracia Verdugo , Joan Albert Jorba Closa , Ezequiel Jordi Rufes Bernad , Xavier Gras Gros
IPC: B41J2/165
CPC classification number: B41J2/16535 , B41J2/16538 , B41J2/16541 , B41J2/16547 , B41J2/16588 , B41J2002/1655 , B41J2002/16558 , B41J2002/16573
Abstract: In one example, a method for wiping the face of a printhead includes wiping across the face of the printhead and then wiping along the face of the printhead with a web of cleaning material. In another example, a wiper for wiping a face of a printhead includes a rotatable shaft having an axis of rotation and a helical blade affixed to the shaft. The helical blade is simultaneously rotatable on the shaft against the face of the printhead and translatable along the face of the printhead in a direction parallel to the axis of rotation.
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公开(公告)号：US09770899B2
公开(公告)日：2017-09-26
申请号：US15025630
申请日：2013-10-14
Applicant: Hewlett-Packard Development Company, L.P.
CPC classification number: B41J2/04535 , B41J2/04586 , B41J2/165 , B41J2/16535 , B41J11/005 , B41J29/023 , B41J2002/16573
Abstract: A method for controlling the amount of printing fluid deposited by a printhead for a plurality of passes of a swath width of a printing process is described. The printing process may include periodic servicing of the printhead. The method may include determining an amount of printing fluid to be deposited for each pass of the swath width; identifying which pass of the swath width servicing is to occur; and reducing the determined amount of printing fluid deposited during a first pass immediately following servicing of the printhead.
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公开(公告)号：US09623662B2
公开(公告)日：2017-04-18
申请号：US14892463
申请日：2013-05-28
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Mauricio Seras Franzoso , Marta Coma Vives , Antonio Gracia Verdugo
IPC: B41J2/165
CPC classification number: B41J2/16535 , B41J2002/1655 , B41J2002/16558
Abstract: A cleaning module includes an actuator device, a fluid chamber, and a wiper member. The actuator device may enter an activation state based on a movement of at least a portion of the actuator device in response to an engagement with the printhead. The fluid chamber may store and supply fluid to the porous wipe material in response to the activation state of the actuator device. The wiper member may apply pressure to a porous wipe material including the fluid therein to wipe the printhead.
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