公开(公告)号：US11472174B2

公开(公告)日：2022-10-18

申请号：US16605873

申请日：2017-12-14

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

Inventor： Alex Feygelman ,  Mordechai Arenson ,  Marko Richter ,  Yossi Yaacobov

IPC: B41F31/28

Abstract: There is disclosed apparatus for wetting a roller of a printing system comprising an applicator unit comprising a liquid agent chamber. Upper and lower walls extend from the liquid agent chamber to define a slit therebetween. The upper wall extends beyond a lip of the lower wall to a transfer lip. A flow restrictor is received in the slit to prevent flow of liquid agent to a respective portion of the transfer lip, thereby defining a restricted portion of the slit and an adjacent unrestricted portion of the slit. The flow restrictor fits in the restricted portion with a clearance that permits liquid agent flow at a reduced velocity relative flow through the unrestricted portion, such that liquid agent along the restricted portion is discharged from the lower wall. A method of installing a flow restrictor is also disclosed.

公开(公告)号：US20210283897A1

公开(公告)日：2021-09-16

申请号：US16605873

申请日：2017-12-14

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

Inventor： Alex Feygelman ,  Mordechai Arenson ,  Marko Richter ,  Yossi Yaacobov

IPC: B41F31/28

Abstract: There is disclosed apparatus for wetting a roller of a printing system comprising an applicator unit comprising a liquid agent chamber. Upper and lower walls extend from the liquid agent chamber to define a slit therebetween. The upper wall extends beyond a lip of the lower wall to a transfer lip. A flow restrictor is received in the slit to prevent flow of liquid agent to a respective portion of the transfer lip, thereby defining a restricted portion of the slit and an adjacent unrestricted portion of the slit. The flow restrictor fits in the restricted portion with a clearance that permits liquid agent flow at a reduced velocity relative flow through the unrestricted portion, such that liquid agent along the restricted portion is discharged from the lower wall. A method of installing a flow restrictor is also disclosed.

公开(公告)号：US11123977B2

公开(公告)日：2021-09-21

申请号：US16606213

申请日：2018-01-08

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

Inventor： Gil Fisher ,  Alex Feygelman ,  Mordechai Arenson

IPC: B41F31/00 ,  B41F31/26 ,  H01L41/09

Abstract: According to some examples a substance displacement apparatus may comprise a gas ejection aperture and a deflector arm. The gas ejection aperture may be to direct gas towards a roller having a surface on which a substance is disposed. The deflector arm may be moveable between a first position in which gas is directed away from a target area on the surface of the roller, and a second position in which gas is directed towards the target area on the surface of the roller, thereby to displace at least some of the substance from the surface of the roller within the target area. A method and a print apparatus are also disclosed.

公开(公告)号：US20210379886A1

公开(公告)日：2021-12-09

申请号：US17408983

申请日：2021-08-23

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Gil Fisher ,  Alex Feygelman ,  Mordechai Arenson

IPC: B41F31/00 ,  B41F31/26 ,  H01L41/09

Abstract: According to some examples a substance displacement apparatus may comprise a gas ejection aperture and a deflector arm. The gas ejection aperture may be to direct gas towards a roller having a surface on which a substance is disposed. The deflector arm may be moveable between a first position in which gas is directed away from a target area on the surface of the roller, and a second position in which gas is directed towards the target area on the surface of the roller, thereby to displace at least some of the substance from the surface of the roller within the target area. A method and a print apparatus are also disclosed.

公开(公告)号：US20200324543A1

公开(公告)日：2020-10-15

申请号：US16606213

申请日：2018-01-08

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

Inventor： Gil Fisher ,  Alex Feygelman ,  Mordechai Arenson

IPC: B41F31/00 ,  H01L41/09 ,  B41F31/26

Abstract: According to some examples a substance displacement apparatus may comprise a gas ejection aperture and a deflector arm. The gas ejection aperture may be to direct gas towards a roller having a surface on which a substance is disposed. The deflector arm may be moveable between a first position in which gas is directed away from a target area on the surface of the roller, and a second position in which gas is directed towards the target area on the surface of the roller, thereby to displace at least some of the substance from the surface of the roller within the target area. A method and a print apparatus are also disclosed.