公开(公告)号：US20210260871A1

公开(公告)日：2021-08-26

申请号：US16772977

申请日：2019-02-06

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

Inventor： John ROSSI ,  Scott A. LINN ,  James M. GARDNER

IPC: B41J2/045

Abstract: A method for use with a series of analog delay circuits to drive a plurality of actuators with a fire signal is disclosed. A bias signal to affect a selected delay in the analog delay circuits is disabled. The fire signal is provided through the series of analog delay circuits with the bias signal disabled.

公开(公告)号：US20230012508A1

公开(公告)日：2023-01-19

申请号：US17950412

申请日：2022-09-22

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

Inventor： Scott A LINN ,  James M. GARDNER

IPC: B41J2/045 ,  B41J29/393

Abstract: An integrated circuit for a fluid ejection device having actuators to operate during a non-reset operating condition is disclosed. The integrated circuit includes a reset input to receive a reset signal activated for a duration. The reset signal generates a reset condition in the integrated circuit. The integrated circuit also includes a monitor circuit operably coupled to the reset input to indicate if the duration of the reset signal meets or exceeds a selected duration and a nonvolatile memory device having data accessible during the reset condition.

公开(公告)号：US20210162747A1

公开(公告)日：2021-06-03

申请号：US16957518

申请日：2019-02-06

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

Inventor： Scott A. LINN ,  James M. GARDNER

IPC: B41J2/045 ,  B41J29/393

Abstract: An integrated circuit to drive a plurality of actuators during a non-reset operating condition is disclosed. The integrated circuit includes a reset input to receive a reset signal activated for a duration. The reset signal generates a reset condition in the integrated circuit during which the non-reset operating condition is blocked. The integrated circuit also includes a monitor circuit operably coupled to the reset input to indicate if the duration of the reset signal meets or exceeds a selected duration.

公开(公告)号：US20210221128A1

公开(公告)日：2021-07-22

申请号：US16772522

申请日：2019-02-06

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

Inventor： James M. GARDNER ,  George H. CORRIGAN ,  Scott A. LINN

IPC: B41J2/045

Abstract: An integrated circuit to drive a plurality of fluid actuators is disclosed. The integrated circuit analog delay circuits coupled in series and to a fire input to receive a fire signal in succession. Each analog delay circuit receives the fire signal and, after a delay, provides the fire signal via an output to a corresponding fluid actuator. A bias circuit is coupled to each of the of analog delay circuits. The bias circuit provides a bias signal to control the delay.

公开(公告)号：US20210162745A1

公开(公告)日：2021-06-03

申请号：US16957520

申请日：2019-02-06

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

Inventor： Scott A. LINN ,  James M. GARDNER

IPC: B41J2/045

Abstract: An integrated circuit is disclosed. The integrated circuit includes an actuator to eject a fluid in response to a fire signal. The integrated circuit also includes a monitor circuit set by the fire signal to block the fire signal to the actuator circuit after a selected duration.