Fluidic actuator activations for sense measurements

Patent metadata

Field	Value
Publication number	US-11225068-B2
Application number	US-201816970482-A
Country	US
Kind code	B2
Filing date	Apr 6, 2018
Priority date	Apr 6, 2018
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

In some examples, a fluid dispensing device includes a plurality of fluidic actuators, activate data storage elements, and sense measurement storage elements. The fluid dispensing device includes a decoder to detect, based on a first activate indicator of the activate indicators, that a first fluidic actuator is to be activated, detect, based on a first sense measurement indicator of the sense measurement indicators that a sense measurement is to be performed on the first fluidic actuator, and in response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed on the first fluidic actuator, 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;
activate data storage elements to store respective activate indicators for controlling activation of respective fluidic actuators of the plurality of fluidic actuators;
sense measurement storage elements to store respective sense measurement indicators for indicating whether the respective fluidic actuators are to be subject to a sense measurement; and
a decoder to:
detect, based on a first activate indicator of the activate indicators, that a first fluidic actuator is to be activated;
detect, based on a first sense measurement indicator of the sense measurement indicators that a sense measurement is to be performed on the first fluidic actuator; and
in response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed on the first fluidic actuator:
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 decoder comprises a logic gate to enable activation of the first fluidic actuator at the first time in response to the first sense measurement indicator set inactive and the first activate indicator being set active.

3. The fluid dispensing device of claim 2 , wherein the logic gate is to enable the activation of the first fluidic actuator at the first time further in response to an address selecting the first fluidic actuator.

4. The fluid dispensing device of claim 3 , wherein the logic gate is to enable the activation of the first fluidic actuator at the first time further in response to a signal indicating a non-sense measurement interval.

5. The fluid dispensing device of claim 4 , wherein the decoder is to activate the first fluidic actuator at the first time in response to a fire pulse and the enabling of the activation of the first fluidic actuator at the first time.

6. The fluid dispensing device of claim 1 , wherein the decoder comprises a logic gate to enable the activation of the first fluidic actuator at the second time in response to the first sense measurement indicator set active, the first activate indicator being set active, and a signal indicating the sense measurement interval.

7. The fluid dispensing device of claim 6 , wherein the decoder is to activate the first fluidic actuator at the second time in response to a fire pulse and the enabling of the activation of the first fluidic actuator at the second time.

8. The fluid dispensing device of claim 1 , wherein the first time corresponds to a normal time interval scheduled for activation of the first fluidic actuator by fluid control data, wherein the normal time interval is different from the sense measurement interval.

9. The fluid dispensing device of claim 1 , wherein loading of data to control activation of respective fluidic actuators is performed by shifting the data into activate data storage elements.

10. The fluid dispensing device of claim 1 , wherein the sense measurement storage elements are arranged as a series of sense measurement storage elements, and loading of sense measurement data to control sense measurement of respective fluidic actuators is performed by shifting the sense measurement data through the series of sense measurement storage elements.

11. A fluidic die comprising:
a plurality of fluidic actuators;
a controller to:
load respective activate indicators for controlling activation of respective fluidic actuators of the plurality of fluidic actuators; and
load respective sense measurement indicators for indicating whether the respective fluidic actuators are to be subject to a sense measurement; and

a decoder to:
detect, based on a first activate indicator of the activate indicators, that a first fluidic actuator is to be activated;
detect, based on a first sense measurement indicator of the sense measurement indicators that a sense measurement is to be performed on the first fluidic actuator; and
in response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed on the first fluidic actuator:
suppress activation of the first fluidic actuator in a first time interval, and
activate the first fluidic actuator in a sense measurement interval, different from the first time interval, to perform the sense measurement of the first fluidic actuator.

12. The fluidic die of claim 11 , wherein the plurality of fluidic actuators are arranged in multiple primitives each including plural fluidic actuators, and wherein activations of fluidic actuators of each primitive are controlled by respective different addresses.

13. The fluidic die of claim 12 , wherein the controller is to:
send a plurality of fire pulses to cause activations of corresponding fluidic actuators if enabled, each fire pulse of the plurality of fire pules provided with a respective different address.

14. A method of a fluid dispensing device, comprising:
loading activate indicators into respective activate data storage elements for controlling activation of respective fluidic actuators;
loading sense measurement indicators into respective sense measurement storage elements for indicating whether the respective fluidic actuators are to be subject to a sense measurement;
detecting, by a decoder based on a first activate indicator of the activate indicators, that a first fluidic actuator is to be activated;
detecting, by the decoder based on a first sense measurement indicator of the sense measurement indicators, that a sense measurement is to be performed on the first fluidic actuator; and
in response to detecting that the first fluidic actuator is to be activated and the sense measurement is to be performed on the first fluidic actuator:
suppressing activation of the first fluidic actuator in a first time interval, and
activating the first fluidic actuator in a sense measurement interval, different from the first time interval, to perform the sense measurement of the first fluidic actuator.

15. The method of claim 14 , wherein the suppressing of the activation of the first fluidic actuator in the first time interval is responsive to the first sense measurement indicator being set active.

Assignees

• Hewlett Packard Development Co

Inventors

• Anderson Daryl E
• Martin Eric T

Classifications

• B41J2/175 Primary

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

• B41J2/125 Primary

  Sensors, e.g. deflection sensors {(nozzle clogging detection for cleaning reasons B41J2/16579; detection for compensation for failed nozzles B41J2/2139)} · CPC title