公开(公告)号：US20210001654A1

公开(公告)日：2021-01-07

申请号：US16977737

申请日：2018-04-30

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

Inventor： Aleix Fort Filgueira ,  Josep Maria Cuner Utges ,  Leyre Hernandez Martinez

IPC: B41J29/393

Abstract: An example method is disclosed of adjusting a print head parameter, the method comprising ejecting a print agent drop from a print head, determining a velocity of the print agent drop, and adjusting the print head parameter based on the velocity of the print agent drop wherein the print head parameter is a number of drops of print agent in an area and/or a density of print agent applied by the print head.

公开(公告)号：US20200207113A1

公开(公告)日：2020-07-02

申请号：US16631292

申请日：2017-09-29

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

Inventor： Josep Maria Cuner Utges ,  Leyre Hernandez Martinez

IPC: B41J2/21 ,  B41J2/045

Abstract: An example appearance calibration system includes a profile engine that identifies a printer setting corresponding to a non-color appearance attribute of an image source and a setting engine that sets a printer setting corresponding to the non-color appearance attribute. An example set of instructions may cause a processor resource to identify a setting corresponding to a printer component that affects an appearance attribute and provide layer appearance information representing a degree of the appearance attribute identified using a look-up table. An example method of appearance matching among a plurality of printers is described. In the example method, a plurality of appearance attributes controllable between a first printer and a second printer is identified, a degree of each attribute compatible with the first and second printer is determined, and instructions are prepared for the first and second printer using the degree of each attribute compatible with the first and second printer.