公开(公告)号：US20230356522A1

公开(公告)日：2023-11-09

申请号：US18246158

申请日：2020-09-22

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

Inventor： Javier CASTRO SORIANO ,  Nestor LUID PINOL ,  Carles CARMONA CALPE ,  David VENDRELL TORNERO

IPC: B41J2/045 ,  B41J25/308

CPC classification number: B41J2/04505 ,  B41J2/04503 ,  B41J25/308

Abstract: A method is described in which a difference in height is determined between a current position and a calibration position of a printhead of a printer. An alignment value for the printhead is then determined based on the difference.

公开(公告)号：US20230391071A1

公开(公告)日：2023-12-07

申请号：US18246597

申请日：2020-09-25

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

Inventor： David PEINADO GUTIERREZ ,  Ferran OLIVERA CORPAS ,  David VENDRELL TORNERO

IPC: B41J2/045

CPC classification number: B41J2/04505 ,  B41J2/04586

Abstract: In an example a method comprises operating, by a processor, on a first quantity that is proportional to a side of a parallelogram printed, at least in part, on a substrate by a fluidic die, the side of the parallelogram being substantially perpendicular to the direction of advancement of the substrate. The method further comprises operating, by a processor, on a second quantity and a third quantity, the second and third quantities respectively being proportional to the length of the lines bisecting the parallelogram. The method comprises calculating, by a processor, an angle that the fluidic die makes with the direction of advancement of the substrate based on the first, second, and third quantities.

公开(公告)号：US20230062837A1

公开(公告)日：2023-03-02

申请号：US17411408

申请日：2021-08-25

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

Inventor： Maria VILA ABAD ,  Xavier QUINTERO RUIZ ,  David VENDRELL TORNERO ,  Carles CARMONA CALPE

IPC: B41J2/045 ,  G06F3/12

Abstract: Examples relate to computer-implemented methods for a printing system comprising a printhead, and to printing systems. A method for a printing system comprises retrieving a stored first offset applied to the printhead to align the printhead, the first offset determined based on a first user input signal; and further aligning the printhead according to a further offset determined based on a further user input signal, the further offset indicating a difference from the first offset.

公开(公告)号：US20230056391A1

公开(公告)日：2023-02-23

申请号：US17407039

申请日：2021-08-19

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

Inventor： Ferran OLIVERA CORPAS ,  David PEINADO GUTIERREZ ,  David VENDRELL TORNERO

IPC: H04N1/60 ,  G01J3/52 ,  H04N1/00

Abstract: Aspects of the disclosure provide for a method. In some examples, the method includes printing a target plot comprising a color ramp, scanning the target plot via a first image scanner to determine first scan results indicating a relationship between a scanned measurement determined by the first image scanner and lightness of a scanned portion of the target plot, scanning the target plot via a second image scanner to determine second scan results indicating a relationship between a scanned measurement determined by the second image scanner and lightness of the scanned portion of the target plot, and determining a lookup table indicating a difference determined based on the first scan results and the second scan results.