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.

公开(公告)号：US20210162738A1

公开(公告)日：2021-06-03

申请号：US16959065

申请日：2019-02-06

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

Inventor： Scott A. LINN ,  James Michael GARDNER ,  Erik D. NESS

IPC: B41J2/045

Abstract: An integrated circuit to drive a plurality of fluid actuation devices includes a plurality of first non-volatile memory cells and control logic. Each first non-volatile memory cell stores a customization bit. The control logic configures an operation of the integrated circuit based on the customization bits.

公开(公告)号：US20210097018A1

公开(公告)日：2021-04-01

申请号：US16495238

申请日：2019-02-11

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

Inventor： Stephen D. PANSHIN ,  Scott A. LINN

IPC: G06F13/42 ,  B41J2/175 ,  H04N1/00 ,  G06F13/38

Abstract: A logic circuitry package for association with a replaceable print apparatus component comprises: logic and a serial data bus interface, wherein the serial data bus interface is to interface with a serial data bus of a print apparatus, and, wherein the logic is, in response to a first command sent to the logic circuitry package via the serial data bus connected to the serial data bus interface, the first command including a time period, to generate a low voltage condition on the serial data bus for a duration based on the time period, and, after the duration, return to a default voltage condition on the serial data bus.

公开(公告)号：US20210046760A1

公开(公告)日：2021-02-18

申请号：US16965557

申请日：2019-04-05

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

Inventor： James Michael GARDNER ,  Scott A. LINN ,  Stephen D. PANSHIN ,  Jefferson P. WARD ,  David Owen ROETHIG ,  David N. OLSEN ,  Anthony D. STUDER ,  Michael W. CUMBIE

IPC: B41J2/175 ,  G06F13/42 ,  G06F21/44 ,  G06K15/00

Abstract: In an example, a method comprises, by logic circuitry associated with a replaceable print apparatus component installed in a print apparatus, receiving a sensor data request and determining whether the request is for data indicative of a print material level or for data indicative of a pressurisation event. In the event that the request is a request for data indicative of the print material level, the method may comprise responding with a first data response in a first value range; and in the event that the request is a request for data indicative of a pressurisation event, the method may comprise responding with a second data response in a second value range.

公开(公告)号：US20200376849A1

公开(公告)日：2020-12-03

申请号：US16997329

申请日：2020-08-19

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

Inventor： James Michael GARDNER ,  Scott A. LINN ,  Stephen D. PANSHIN ,  Jefferson P. WARD ,  David Owen ROETHIG ,  David N. OLSEN ,  Anthony D. STUDER ,  Michael W. CUMBIE ,  Sirena Chi LU

IPC: B41J2/175

Abstract: A logic circuit for a replaceable print component is configured to, in response to a plurality of commands including a first command specifying the new I2C communications address and a first calibration parameter, a second command specifying the new I2C communications address and a second calibration parameter, a third command specifying the new I2C communications address and a class parameter, and/or fourth commands specifying the new I2C communications address and sub-class parameters, and at least one read request, generate count values in a count value range defined by a highest and lowest count value.