公开(公告)号：US10899136B2

公开(公告)日：2021-01-26

申请号：US16335974

申请日：2017-01-24

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

Inventor： David Butinya ,  Marta Coma Vives ,  Joan-Albert Miravet

IPC: B41J2/175 ,  B41J2/18

Abstract: A printing device comprises a printing fluid supply; a plurality of printheads connected in parallel to the supply by a first flow path and a second flow path; a first fluid pressure source to create a negative fluid pressure between the supply and the first openings; a second fluid pressure source to create a positive fluid pressure between the supply and the second openings; and a controller. Each printhead comprises a closable first opening connected to the first flow path and a closable second opening connected to the second flow path, and has an associated mechanism to increase a fluid pressure in the printhead. Each first opening is to open in response to operation of the associated mechanism. The controller is to identify a first printhead for which printing fluid in the first printhead is to be recirculated; and operate the mechanism associated with the identified printhead.

公开(公告)号：US20170355198A1

公开(公告)日：2017-12-14

申请号：US15544597

申请日：2015-03-13

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

Inventor： Fernando Bayona ,  Michel Georges Encrenaz ,  Albert Crespi ,  Joan-Albert Miravet ,  Bhishma Hernandez Martinez

IPC: B41J2/175

CPC classification number: B41J2/17566 ,  B41J2/175 ,  B41J2/17596

Abstract: An example device in accordance with an aspect of the present disclosure includes a first reservoir for a printable composition, a pump fluidically coupled to the first reservoir and a second reservoir, a sensor, and a controller. The controller is to identify first and second reservoir statuses based on the sensor.

公开(公告)号：US20190263130A1

公开(公告)日：2019-08-29

申请号：US16335974

申请日：2017-01-24

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

Inventor： David Butinya ,  Marta Coma Vives ,  Joan-Albert Miravet

IPC: B41J2/175 ,  B41J2/18

Abstract: A printing device comprises a printing fluid supply; a plurality of printheads connected in parallel to the supply by a first flow path and a second flow path; a first fluid pressure source to create a negative fluid pressure between the supply and the first openings; a second fluid pressure source to create a positive fluid pressure between the supply and the second openings; and a controller. Each printhead comprises a closable first opening connected to the first flow path and a closable second opening connected to the second flow path, and has an associated mechanism to increase a fluid pressure in the printhead. Each first opening is to open in response to operation of the associated mechanism. The controller is to identify a first printhead for which printing fluid in the first printhead is to be recirculated; and operate the mechanism associated with the identified printhead.

公开(公告)号：US10226938B2

公开(公告)日：2019-03-12

申请号：US15544597

申请日：2015-03-13

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

Inventor： Fernando Bayona ,  Michel Georges Encrenaz ,  Albert Crespi ,  Joan-Albert Miravet ,  Bhishma Hernandez Martinez

IPC: B41J2/175

Abstract: An example device in accordance with an aspect of the present disclosure includes a first reservoir for a printable composition, a pump fluidically coupled to the first reservoir and a second reservoir, a sensor, and a controller. The controller is to identify first and second reservoir statuses based on the sensor.