公开(公告)号：WO2020204926A1

公开(公告)日：2020-10-08

申请号：PCT/US2019/025729

申请日：2019-04-04

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

Inventor： ARBEL, Amir ,  HAIK, Oren ,  ELUK, Tal ,  NIR, Jonathan

IPC: G03G15/10 ,  G01M13/023 ,  G01L5/04

Abstract: A method of determining a state of a belt of a print apparatus is disclosed. The method includes: receiving, using a processor, a measurement of a parameter associated with the belt; providing, using a processor, the measured parameter as an input to a trained classifier; and obtaining, using a processor, as an output of the trained classifier an indication of a state of the belt. An apparatus and a method of training a predictive model are also disclosed.

公开(公告)号：WO2020167310A1

公开(公告)日：2020-08-20

申请号：PCT/US2019/018075

申请日：2019-02-14

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

Inventor： ELUK, Tal ,  YONA, Yaniv ,  NEGREANU, Eyal

IPC: G03G9/12 ,  G03G9/06 ,  G03G13/06

Abstract: A print agent application assembly is disclosed. The print agent application assembly includes a print agent transfer roller to receive print agent and transfer a portion of the print agent to a photoconductive surface. The print agent application assembly may further include an electrode to provide an electric charge to the print agent transfer roller. The print agent transfer roller and the electrode may define walls of a cavity through which print agent is to pass. The electrode may comprise an aperture via which a portion of the print agent is able to exit the cavity. A method and a print apparatus are also disclosed.