公开(公告)号：US11214083B2

公开(公告)日：2022-01-04

申请号：US16661028

申请日：2019-10-23

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

Inventor： Angel Astorgano-Ballesteros ,  Ranjit Bhaskar ,  Praveen Boppana ,  Stuart Douglas Spencer

IPC: B41J13/00 ,  B41J11/00 ,  B41J29/393 ,  B41J25/308 ,  B41J29/38

Abstract: In one example in accordance with the present disclosure, a printing system is described. The printing system includes a media sensor to detect a presence of media at a particular point within the printing system. A stepper motor moves media through the printing system. A controller 1) monitors, for at least one pass of the media, a number of steps of the stepper motor to pass the media between the media sensor and a print position, 2) stores the number of steps of the stepper motor in a memory device, and 3) adjusts operation of subsequent passes of the media based on stored number of steps. A memory device of the printing system stores the number of steps of the stepper motor, for at least one pass of the media.

公开(公告)号：US20210122178A1

公开(公告)日：2021-04-29

申请号：US16661028

申请日：2019-10-23

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

Inventor： Angel Astorgano-Ballesteros ,  Ranjit Bhaskar ,  Praveen Boppana ,  Stuart Douglas Spencer

IPC: B41M5/385 ,  B41J25/308 ,  B41J29/393

Abstract: In one example in accordance with the present disclosure, a printing system is described. The printing system includes a media sensor to detect a presence of media at a particular point within the printing system. A stepper motor moves media through the printing system. A controller 1) monitors, for at least one pass of the media, a number of steps of the stepper motor to pass the media between the media sensor and a print position, 2) stores the number of steps of the stepper motor in a memory device, and 3) adjusts operation of subsequent passes of the media based on stored number of steps. A memory device of the printing system stores the number of steps of the stepper motor, for at least one pass of the media.

公开(公告)号：US20200238734A1

公开(公告)日：2020-07-30

申请号：US16634953

申请日：2017-07-31

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

Inventor： Wei Lit Teoh ,  Li-Wen Benedict TAN ,  Eugene Goh ,  Angel Astorgano-Ballesteros ,  Ken Ko

IPC: B41J13/00

Abstract: The present subject matter describes determination of amount of print media present in an input tray of a printing system. In an example implementation of the present subject matter, a current operating torque of a motor that moves a pick arm for drawing print media from the input tray is monitored. The current operating torque is monitored while the pick arm is moved between a rest position and a pick-ready position. Based on the monitored operating torque, it is determined whether amount of print media present in the input tray is one of below and above a predefined amount of print media.

公开(公告)号：US10994560B2

公开(公告)日：2021-05-04

申请号：US16634953

申请日：2017-07-31

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

Inventor： Wei Lit Teoh ,  Li-Wen Benedict Tan ,  Eugene Goh ,  Angel Astorgano-Ballesteros ,  Ken Ko

IPC: B41J13/00 ,  B65H7/02 ,  B41J13/10 ,  B65H1/04 ,  B65H7/04 ,  B41F21/05 ,  B65H1/08 ,  B41J13/16 ,  B65H3/06

Abstract: The present subject matter describes determination of amount of print media present in an input tray of a printing system. In an example implementation of the present subject matter, a current operating torque of a motor that moves a pick arm for drawing print media from the input tray is monitored. The current operating torque is monitored while the pick arm is moved between a rest position and a pick-ready position. Based on the monitored operating torque, it is determined whether amount of print media present in the input tray is one of below and above a predefined amount of print media.