Decoders to activate fluidic actuators for sense measurements

Patent metadata

Field	Value
Publication number	US-11524498-B2
Application number	US-201816500421-A
Country	US
Kind code	B2
Filing date	Apr 6, 2018
Priority date	Apr 6, 2018
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

In some examples, a fluid dispensing device includes a plurality of fluidic actuators and a decoder to detect that a first fluidic actuator is to be activated, and detect that a sense measurement is to be performed. In response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed, the decoder is to suppress activation of the first fluidic actuator at a first time, and activate the first fluidic actuator at a second time corresponding to a sense measurement interval to perform the sense measurement of the first fluidic actuator.

First claim

What is claimed is:

1. A fluid dispensing device comprising:
a plurality of fluidic actuators; and
a decoder to:
detect that a first fluidic actuator is to be activated;
detect that a sense measurement is to be performed; and
in response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed:
suppress activation of the first fluidic actuator at a first time, and
activate the first fluidic actuator at a second time corresponding to a sense measurement interval to perform the sense measurement of the first fluidic actuator.

2. The fluid dispensing device of claim 1 , wherein the detecting that the sense measurement is to be performed comprises detecting that a sense measurement indicator is set active specifying that the sense measurement is to be performed for the first fluidic actuator.

3. The fluid dispensing device of claim 1 , wherein the detecting that the sense measurement is to be performed comprises detecting that a sense measurement indicator is set active specifying that the sense measurement is to be performed for a fluidic actuator of a group of fluidic actuators including the first fluidic actuator.

4. The fluid dispensing device of claim 3 , wherein the group of fluidic actuators are associated with respective activation intervals associated with respective different addresses, and wherein the suppressing of the activation of the first fluidic actuator at the first time is further in response to activation of a sense address strobe indicating an activation interval associated with the first fluidic actuator.

5. The fluid dispensing device of claim 3 , further comprising a storage element to store the sense measurement indicator.

6. The fluid dispensing device of claim 5 , wherein the storage element is part of a series of storage elements, the series of storage elements to shift the sense measurement indicator through the series of storage elements to select a fluidic actuator on which to perform a sense measurement.

7. The fluid dispensing device of claim 3 , wherein the decoder comprises a logic gate to set a sense activate indicator active in response to the sense measurement indicator being set active and a fluid control data for the first fluidic actuator being set active.

8. The fluid dispensing device of claim 7 , wherein the decoder is to assert an activation signal for the first fluidic actuator in response to a signal indicating the sense measurement interval and in response to the sense activate indicator being set active and activate data for the first fluidic actuator being set active.

9. The fluid dispensing device of claim 8 , wherein the decoder is to assert the activation signal for the first fluidic actuator further in response to a fire pulse.

10. The fluid dispensing device of claim 3 , wherein the decoder comprises a logic gate to:
enable activation of the first fluidic actuator at the first time in response to the sense measurement indicator being set inactive and an activate data for the first fluidic actuator being set active; and
suppress activation of the first fluidic actuator at the first time in response to the sense measurement indicator being set active and a sense address strobe for the first fluidic actuator being set active, even if the activate data for the first fluidic actuator is set active.

11. A fluidic die comprising:
a plurality of fluidic actuators arranged as primitives of fluidic actuators;
a plurality of storage elements to store sense measurement indicators to indicate whether or not respective fluidic actuators or primitives are to be subject to a sense measurement; and
a decoder to:
detect that a first fluidic actuator is to be activated; and
in response to detecting that the first fluidic actuator is to be activated and a sense measurement indicator in a first storage element associated with the first fluidic actuator being set active indicating that a sense measurement is to be performed:
suppress activation of the first fluidic actuator at a first time, and
activate the first fluidic actuator at a second time corresponding to a sense measurement interval to perform the sense measurement of the first fluidic actuator.

12. The fluidic die of claim 11 , wherein activations of fluidic actuators of a primitive are controlled by respective different addresses.

13. The fluidic die of claim 11 , wherein the decoder comprises:
a first logic gate to suppress the activation of the first fluidic actuator in response to the sense measurement indicator in the first storage element being set active, even if activate data for the first fluidic actuator is set active;
a second logic gate to activate the first fluidic actuator at the second time in response to the sense measurement indicator in the first storage element being set active, and the activate data for the first fluidic actuator being set active.

14. A method of a fluid dispensing device, comprising:
detecting, by a decoder of the fluid dispensing device, that a first fluidic actuator is to be activated;
detecting, by the decoder, that a sense measurement is to be performed; and
in response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed:
suppressing activation of the first fluidic actuator at a first time, and
activating the first fluidic actuator at a second time corresponding to a sense measurement interval to perform the sense measurement of the first fluidic actuator.

15. The method of claim 14 , wherein detecting that the sense measurement is to be performed is based on a sense measurement indicator set active to indicate that the sense measurement is to be performed for a fluidic actuator of a group of fluidic actuators including the first fluidic actuator, the group of fluidic actuators being associated with respective activation intervals associated with respective different addresses, and wherein the suppressing of the activation of the first fluidic actuator at the first time is further in response to activation of a sense address strobe indicating an activation interval associated with the first fluidic actuator.

Assignees

• Hewlett Packard Development Co

Inventors

• Anderson Daryl E
• Martin Eric T

Classifications

• B41J2/175 Primary

  Ink supply systems {; Circuit parts therefor} · CPC title

• B41J2002/14354

  Sensor in each pressure chamber · CPC title

• B41J2/14072 Primary

  Electrical connections, e.g. details on electrodes, connecting the chip to the outside... · CPC title

• B41J2/04541

  Specific driving circuit · CPC title

• B41J2/04598

  Pre-pulse · CPC title